Table 1 - Force-Versus-Crush Relationships for Passenger Coach and Conventional Locomotive. $\therefore$ Work done from X to Y = Zero. Two dielectric slabs of dielectric constant \[{{K}_{1}}\] and \[{{K}_{2}}\] are filled in between the two plates, each of area \[A\], of the parallel plate capacitor as shown in the figure. Two charged particles are located on the x-axis. All such low-yield battlefield weapons, whether gun-type U-235 designs or linear implosion Pu-239 designs, pay a high price in fissile material in order to achieve diameters between six and ten inches (15 and 25cm). An age/time limit may be used to reduce the overall failure rate of simple components or systems. This shot used non-fissionable tampers; an inert substitute material such as tungsten or lead was used. An arbitrary surface encloses a dipole. 9. Safety appliance means an appliance required under 49 U.S.C. Ans: Capacitance of capacitor ${{C}_{1}}$ is given as $100pF$. (2) Take effective steps to design the equipment and select materials which help provide sufficient fire resistance to reasonably ensure adequate time to detect a fire and safely evacuate the passengers and crewmembers, if a fire cannot be prevented. (c) If the Administrator finds that a waiver of compliance is in the public interest and is consistent with railroad safety, the Administrator may grant the waiver subject to any conditions the Administrator deems necessary. (i) California Technical Bulletin (Cal TB) 129, Flammability Test Procedure for Mattresses for Use in Public Buildings (October, 1992). Are stairway handrails capable of withstanding a load of 200 pounds, applied in any direction? (CBSE Delhi 2011) Ans: When a charge particle is moved from one point to the other on a closed loop, the work done by the electrostatic field is zero. (1) A railroad may request earlier application of the requirements contained in 238.15, 238.17, 238.19, 238.107, 238.109, and subpart D upon written notification to FRA's Associate Administrator for Safety. For positive charge \[{{q}_{1}}\], potential difference \[V\]is always positive. Are all energized parts of electrical circuits and equipment guarded against accidental contact by approved cabinets or enclosures? This gives the electric field due to an infinite plane sheet of charge which is independent of the distance from the sheet. Is mechanical ventilation provided when spraying operation is done in enclosed areas? Therefore, the capacitance of the capacitor is \[17.71pF\] and charge on each plate is \[1.771\times {{10}^{-9}}\]. (1) Except as provided in paragraph (c)(2) of this section, each side-facing exterior window in other than a cab shall comply with the requirements for Type II glazing contained in appendix A to part 223 of this chapter. If the single car test cannot be made at the point where repairs are made, the car may be moved in passenger service to the next forward location where the test can be made. Alerter means a device or system installed in the locomotive cab to promote continuous, active locomotive engineer attentiveness by monitoring select locomotive engineer-induced control activities. (A) If the Associate Administrator stays action, the railroad shall correct any deficiencies FRA identified and notify FRA it has corrected the deficiencies before placing the subject equipment into service. 2, Standard for Passenger Seats in Passenger Rail Cars, Authorized October 3, 2010. What would be the effect on the force when a plastic sheet is inserted between the two? Ans: Charge located at the origin is given as, \[q=8mC=8\times {{10}^{3}}C\]. [citation needed], While the firing of one detonator out of many will not cause a hollow pit to go critical, especially a low-mass hollow pit that requires boosting, the introduction of two-point implosion systems made that possibility a real concern. [citation needed] RI was a particular problem before effective early warning radar systems because a first strike attack might make retaliatory weapons useless. [38] The Russian name for the same design was more descriptive: Sloika (Russian: ), a layered pastry cake. It would have blown it up before it got going. (f) End-of-train circuit. Are portable fans provided with full guards or screens having openings 1/2 inch or less? All approved material is available for inspection at Federal Railroad Administration, Docket Clerk, 1200 New Jersey Avenue SE, Washington, DC and available from the American Public Transportation Association, 1666 K Street NW, Washington, DC 20006, www.aptastandards.com. Is it prohibited to place a ladder in front of doors opening toward the ladder except when the door is blocked open, locked or guarded? Permanent deformation means the undergoing of a permanent change in shape of a structural member of a rail vehicle. Alternative Requirements for Collision Posts. You may obtain a copy of the incorporated document from the American Public Transportation Association, 1666 K Street NW., Washington, DC 20006, www.aptastandards.com. Electrostatic energy stored in the capacitor is given by the relation, \[{{E}_{B}}=\frac{{{q}_{2}}}{4\pi {{\in }_{0}}{{\left( BZ \right)}^{2}}}\], \[\cos \theta =\frac{0.10}{0.18}=\frac{5}{9}=0.5556\], \[\theta ={{\cos }^{-1}}0.5556={{56.25}^{\circ }}\], \[\Rightarrow 2\theta ={{112.5}^{\circ }}\], \[\overline{{{E}_{2}}}-\overline{{{E}_{1}}}=\frac{\sigma }{2{{\in }_{0}}}\hat{n}+\frac{\sigma }{2{{\in }_{0}}}\hat{n}=\frac{\sigma }{{{\in }_{0}}}\hat{n}\], \[\Rightarrow E\left( 2\pi dL \right)=\frac{\lambda L}{{{\in }_{0}}}\], \[\Rightarrow E\left( 2\pi dL \right)=\frac{{{q}_{1}}{{q}_{2}}}{4\pi {{\in }_{0}}{{d}_{1}}}-27.2eV\], \[\Rightarrow E\left( 2\pi dL \right)=\frac{9\times {{10}^{9}}\times {{\left( 1.6\times {{10}^{-19}} \right)}^{2}}}{1.06\times {{10}^{-10}}}-27.2eV\], \[\Rightarrow E\left( 2\pi dL \right)=21.73\times {{10}^{-10}}J-27.2eV\], \[\Rightarrow E\left( 2\pi dL \right)=13.58eV-27.2eV\], \[\Rightarrow E\left( 2\pi dL \right)=13.58eV\], \[\Rightarrow E=\frac{1}{2}\times 12\times {{10}^{-12}}\times {{\left( 50 \right)}^{2}}\]. Question 2. Obtain the expression for the amount of work done in bringing a point charge q from infinity to a point, distant r, in front of the charged plane sheet. (b) Nothing in this section shall affect the requirements of the Track Safety Standards in part 213 of this chapter as they apply to passenger equipment as provided in that part. = -R + L = 2a3 -0 = 2a3, We can use Gausss law to find the total charge q inside the cube. (11) Low-location emergency exit path markings required by 238.127 are in place and conspicuous. Where sprinkler systems are permanently installed, are the nozzle heads directed or arranged so that water will not be sprayed into operating electrical switchboards and equipment? Why? Ans: Yes, the man will get an electric shock when he touches the metal slab. These forces are equal, parallel, and opposite. If the passenger car is out of service for one or more periods of at least 30 consecutive days, the interval prescribed for any test or inspection required by 238.307 and 238.309 may be extended by the number of days in each period the passenger car is out of service since the last test or inspection in question. (3) The communicating signal system is tested and known to be operating as intended; a tested and operating two-way radio system meets this requirement. A railroad may request earlier application of these requirements upon written notification to FRA's Associate Administrator for Safety as provided in 238.1(c) of this part. Answer: (Assume the house to be a steel cage so there is no field inside). Two tests shall be conducted with the complete glazing article at 32 F 9 F (0 C 5 C) and two tests shall be conducted with the complete glazing article at 68 F 9 F (20 C 5 C). Ans: We know capacitance of a parallel plate capacitor, \[C=\frac{A{{\in }_{0}}}{d}\], electric field in between the plates, Energy stored per unit volume\[=\frac{Energy\,stored}{Volume}\], Energy stored per unit volume\[=\frac{\frac{1}{2}\frac{{{q}^{2}}}{C}}{Ad}\] (Volume of the capacitor = Ad), \[=\frac{\frac{1}{2}\times \frac{{{\left( \sigma A \right)}^{2}}}{\frac{A{{\in }_{0}}}{d}}}{Ad}=\frac{\frac{1}{2}\times {{E}^{2}}{{\in }^{2}}{{A}^{2}}d}{{{A}^{2}}{{\in }_{0}}d}\]. For those units of Tier III trainsets without identifiable corner or collision posts, the requirements of appendix F to this part apply to the end structure at each location specified, regardless of whether the structure is a post. Is the locking-out of control circuits in lieu of locking-out main power disconnects prohibited? (7) Demonstration of overall hardware and software system safety as part of the pre-revenue service testing of the equipment. [73], In 1957 and 1958, both labs built and tested as many designs as possible, in anticipation that a planned 1958 test ban might become permanent. (b) No later than December 6, 2018, each railroad shall adopt and comply with operating rules to provide for the safe use of equipment with incompatible exterior side door systems when utilized in a mixed consist. Will the dipole be in equilibrium at these two positions? Is it prohibited to fuel an internal combustion engine with a flammable liquid while the engine is running? Other metals may be used of a thickness in inverse proportion to their yield strengths. The diagram is as shown 238.735 Seat crashworthiness (passenger and cab crew). [22], The concept of fusion-boosted fission was first tested on May 25, 1951, in the Item shot of Operation Greenhouse, Eniwetok, yield 45.5 kilotons. The Pu-239 pit of Fat Man was only 9.1 centimetres (3.6in) in diameter, the size of a softball. The railroad shall comply with those procedures that it designates as mandatory for the safety of the equipment and its occupants. Each passenger car and power car ordered prior to April 1, 2009 and placed in service for the first time prior to April 1, 2011, shall have a minimum of one roof hatch emergency access location with a minimum opening of 26 inches by 24 inches, or at least one structural weak point in the roof providing a minimum opening of the same dimensions, to provide access for properly equipped emergency response personnel. Therefore, the potential \[\left( V \right)\] at a distance \[r\] is inversely proportional to the square of the distance. The mass of the pit can be reduced by half, without reducing yield. 5 The surface flammability and smoke emission characteristics shall be demonstrated to be permanent after dynamic testing according to ASTM D 3574-95, Test I2 (Dynamic Fatigue Test by the Roller Shear at Constant Force) or Test I3 (Dynamic Fatigue Test by Constant Force Pounding) both using Procedure B, except that the test samples shall be a minimum of 6 inches (154 mm) by 18 inches (457 mm) by the thickness of the material in its end use configuration, or multiples thereof. Are you required to have an emergency action plan? Are all toilets and washing facilities clean and sanitary? 2. Example of Location and Staggering of Emergency Window Exits - 238.113, Example of Location of Rescue Access Windows - 238.114, Example of Location and Staggering of Emergency Window Exits and Location of Rescue Access Windows - 238.113 and 238.114, Example of a Passenger Compartment Including a Vestibule Connected by an Open Passageway and Excluding a Vestibule Separated by an Interior Door - 238.113 and 238.114, Example of a Multi-Level Car Complying with Window Location and Staggering Requirements - 238.113 and 238.114, Example of an Intermediate Level Seating Area of a Multi-Level Car Complying With Window Location Requirements - 238.113 and 238.114, Example of Location and Marking of Structural Weak Points on Roof of Passenger Car - 238.123, Specific Requirements for Tier I Passenger Equipment. [citation needed], In radiation implosion, the burst of X-ray energy coming from an exploding primary is captured and contained within an opaque-walled radiation channel which surrounds the nuclear energy components of the secondary. The very long-lived isotopes produced by fission would overtake the 60Co again after about 75 years. (h) Instead of the requirements of 238.219, the units of a Tier I alternative passenger trainset may demonstrate their truck-to-carbody attachment integrity by complying with the requirements in 238.717 (b) through (e). (b) Information used to demonstrate compliance with the requirements of this section shall at a minimum include a list and drawings of the structural elements considered in satisfying the thickness-strength requirement of this section, and calculations showing that the thickness-strength requirement is satisfied. minimum value of potential energy View the most recent official publication: These links go to the official, published CFR, which is updated annually. The requirements in this subpart address the inspection, testing, and maintenance of the brake system as well as other mechanical and electrical components covered by this part. (i) A long-distance, intercity passenger train that misses a scheduled calendar day Class I brake test due to a delay en route may proceed to the point where the Class I brake test was scheduled to be performed. Respond as intended means to produce the result that a device or system is designed to produce. Coupling and uncoupling of each semi-permanently coupled unit in a train can be performed safely only while at a maintenance or shop location where personnel can safely get under a unit or between units. y Answer: This is because the field lines give the direction of acceleration and not of velocity. Is a record maintained of required monthly checks of extinguishers? Are toeboards installed around the edges of a permanent floor opening (where persons may pass below the opening)? (ii) An equivalent end structure that can withstand the sum of forces that each collision post in paragraph (a)(1)(i) of this section is required to withstand. A hollow cylindrical box of length 1m and area of cross-section 25 cm2 is placed in a three-dimensional coordinate system as shown in the figure. (b) The design of each unit shall consist of an occupied volume located between two normally unoccupied volumes. Where \[{{E}_{0}}\] is the electric field between the plates. job assignments when they are first hired or assigned new duties. Length of a co-axial cylinder is given as, \[l=15cm=0.15m\], Radius of the outer cylinder is given as, \[{{r}_{1}}=1.5cm=0.015m\], Radius of the inner cylinder is given as, \[{{r}_{2}}=1.4cm=0.014m\], Charge on the inner cylinder, \[q=3.5\mu C=3.5\times {{10}^{-6}}C\]. (2) Tools or implements that are commonly available to the responder in a passenger train emergency. [64 FR 25660, May 12, 1999, as amended at 67 FR 19992, Apr. This is because even the best weapon-grade uranium contains a significant number of 238U nuclei. \[{{V}_{1}}=\] Potential due to charge at \[A+\]Potential due to charge at \[B\], \[{{V}_{1}}=\frac{{{q}_{1}}}{4\pi {{\in }_{0}}\left( \frac{d}{2} \right)}+\frac{{{q}_{2}}}{4\pi {{\in }_{0}}\left( \frac{d}{2} \right)}=\frac{1}{4\pi {{\in }_{0}}\left( \frac{d}{2} \right)}\left( {{q}_{1}}+{{q}_{2}} \right)\], Where, \[\frac{1}{4\pi {{\in }_{0}}}=9\times {{10}^{9}}N{{C}^{2}}{{m}^{-2}}\], \[{{V}_{1}}=\frac{9\times {{10}^{9}}\times {{10}^{-5}}}{\left( \frac{0.30}{2} \right)}\left( 2.5+1.5 \right)\], \[{{E}_{1}}=\] Electric field due to \[{{q}_{2}}\] \[-\]Electric field due to \[{{q}_{1}}\], \[\Rightarrow {{E}_{1}}=\frac{{{q}_{2}}}{4\pi {{\in }_{0}}{{\left( \frac{d}{2} \right)}^{2}}}-\frac{{{q}_{1}}}{4\pi {{\in }_{0}}{{\left( \frac{d}{2} \right)}^{2}}}\], \[\Rightarrow {{E}_{1}}=\frac{9\times {{10}^{9}}}{{{\left( \frac{0.30}{2} \right)}^{2}}}\times {{10}^{6}}\times \left( 2.5-1.5 \right)\], \[\Rightarrow {{E}_{1}}=4\times {{10}^{5}}V{{m}^{-1}}\], Therefore, the potential at mid-point is \[2.4\times {{10}^{5}}V\] and the electric field at mid-point is \[4\times {{10}^{5}}V{{m}^{-1}}\]. 3. If the attachment strength of any other interior fitting is to be demonstrated through sled testing, for purposes of showing compliance with the requirements of this section, such testing shall be conducted in a similar manner. (1) One of the following two conditions must be met for the occupied volume of the initially-moving trainset: (i) There shall be no more than 10 inches of longitudinal permanent deformation; or. A charge Q is placed at the center of the spherical cavity. Underframe means the lower horizontal support structure of a rail vehicle. If fluctuation of a monitored locomotive engineer-induced control activity is not detected within a predetermined time, a sequence of audible and visual alarms is activated so as to progressively prompt a response by the locomotive engineer. Guarding of belts and pulleys, gears and sprockets, and conveyor nip points. Are safety cans used for dispensing flammable or combustible liquids at a point of use? Whereas, when the p[oint charge is negative, then the electric potential at that point will be negative. Are fire doors and shutters in good operating condition? Consider a uniformly charged ring of radius a. (Given: Kwater = 80) (CBSE Al 2011C) These include: Newer 4th-generation[49] nuclear weapons designs including pure fusion weapons and antimatter-catalyzed nuclear pulse propulsion-like devices,[50][51][52] are being studied by the five largest nuclear weapon states. The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. Therefore, the total capacitance of the combination is \[3\mu F\]. (f) Special Notice for Repair. The electric flux can be found by multiplying the component of the electric field in the direction of the area vector (or perpendicular to the area) with the area of the closed surface. Are all employees required to report as soon as practicable any obvious hazard to life or property observed in connection with electrical equipment or lines? \[\Rightarrow V=\frac{1.771\times {{10}^{-9}}}{106\times {{10}^{-12}}}\]. (ii) Take remedial action to reduce the risk of personal injuries to an acceptable level in any such category, if the railroad finds the risk to be unacceptable. Demonstration of compliance with the requirements of this subpart is subject to FRA review and approval under 238.111. There are three existing basic design types: pure fission weapons, the simplest and least technically demanding, were the first nuclear weapons built and have so far been the only type ever used in warfare (by the United States on Each railroad shall maintain sufficient documentation to track how safety issues are raised and resolved. Can the work be done using the larger muscles of the body? (i) Using Passenger equipment not designed in this manner shall be equipped and handled in accordance with one of the following: (1) Equipped with piston travel indicators as defined in 238.5 or devices of similar design and inspected pursuant to the requirements contained in 238.313 (j); or. Vestibule door means a door separating a seating area from a vestibule. The third charge will be in equilibrium if it experiences zero net force. Apply Amperes circuital law to calculate the magnetic field at a point V in the region for (i) r < a and (ii) r > a. questions about the IIP Program. (b) DMU and MU locomotives. Answer: The neutrons are supplied by the nuclear reactor in a way similar to production of plutonium 239Pu from 238U feedstock: target rods of the 6Li feedstock are arranged around a uranium-fueled core, and are removed for processing once it has been calculated that most of the lithium nuclei have been transmuted to tritium. Answer: [8] In reactors, the radioactive products are the nuclear waste in spent fuel. To all workers with respect to hazards specific to each employee's job assignment. left, A:Since cross section area for a particular x is uniform and for a particular value of x electric, Q:5.38 A solenoid with a length of 20 cm and a radius of (3) Resistor elements shall be electrically insulated from resistor frames, and the frames shall be electrically insulated from the supports that hold them. Let \[b\] be the radius of a sphere \[B\], \[{{Q}_{B}}\] be the charge on the sphere, and \[{{C}_{B}}\] be the capacitance of the sphere. \(\frac{2 q^{2}}{4 \pi \varepsilon_{0} x^{2}}=\frac{6 q^{2}}{4 \pi \varepsilon_{0}(d+x)^{2}}\) (3) Bi-parting doors. [citation needed], For example, for the Redwing Mohawk test on July 3, 1956, a secondary called the Flute was attached to the Swan primary. Beginning on January 1, 2002, the following provisions of this section apply to railroads operating Tier I passenger equipment covered by this part. [5], When a free neutron hits the nucleus of a fissile atom like uranium-235 (235U), the uranium nucleus splits into two smaller nuclei called fission fragments, plus more neutrons (for 235U three as often as two; an average of 2.5 per fission). If you have questions for the Agency that issued the current document please contact the agency directly. (e) Stenciling. (a) General. The Associate Administrator will grant such approval if the railroad demonstrates compliance with the applicable requirements of this part. Ans: If two point charges are \[{{q}_{1}}\] and \[{{q}_{2}}\] separated by distance \[d\], it can be expressed as: \[F=\frac{K{{q}_{1}}{{q}_{2}}}{{{d}^{2}}}\], Suppose if force becomes \[\frac{F}{3}\] let the distance be \[x\], \[\frac{F}{3}=\frac{K{{q}_{1}}{{q}_{2}}}{{{x}^{2}}}\], \[\Rightarrow \frac{K{{q}_{1}}{{q}_{2}}}{3{{d}^{2}}}=\frac{K{{q}_{1}}{{q}_{2}}}{{{x}^{2}}}\]. 1.0, Q:Two spherical charges with radius R = 1m and radius R = 1.5m in free space appear as. (d) Inspection of roller bearings on equipment involved in a derailment. [citation needed], A neutron bomb is only feasible if the yield is sufficiently high that efficient fusion stage ignition is possible, and if the yield is low enough that the case thickness will not absorb too many neutrons. When a dielectric is placed in an electric field (E0), it gets polarised, i.e. where is the angle made by the dipole with the electric field E. The torque tends to align the dipole along the direction of the field. (4) Every 736 days for all other types of cab car brake valves. (CBSE Delhi 2016) (iii) ASTM D 3574-95, Standard Test Methods for Flexible Cellular Materials-Slab, Bonded, and Molded Urethane Foams. The tritium production constraint disappears. For information on the availability of this material at NARA, call 202-741-6030, or go to http://www.archives.gov/federal-register/cfr/ibr-locations.html. Magnitude of a small charge, which is taken from a point \[P\] to point \[R\] to point \[Q\]. (b) At a point \[10cm\] from this midpoint in a plane normal to the line passing through the mid-point. 552(a) and 1 CFR part 51. [citation needed], It was much more difficult to understand how it worked or why it failed. 20. (4) Load case 4 - penetration resistance. appropriate for your establishment. (2) The QP or QMP shall notify the crewmember in charge of the movement of the train that the door by-pass device has been activated. (3) For each evaluation load, the load shall be applied to an area of the structure sufficient to not locally cripple or punch through the material. Is all water provided for drinking, washing, and cooking potable? Remote viewing aids possessing equivalent sensitivity are permissible for restricted areas. The glazing manufacturer shall provide documentation containing its technical justification that testing a flat sample is sufficient to verify compliance of the glazing article with the requirements of this paragraph (a). 238.112 Door emergency egress and rescue access systems. Are employee transport vehicles equipped at all times with at least two reflective type flares? As further specified in this section, the program shall describe in detail the procedures, equipment, and other means necessary for the safe operation of the passenger equipment, including: (3) Scheduled preventive-maintenance intervals; (5) Special testing equipment or measuring devices required to perform inspections, tests, and maintenance; and. A spherical conducting shell of inner radius \[{{r}_{1}}\] and outer radius \[{{r}_{2}}\] has a charge. (a) General. Are employees instructed to make preliminary inspections and/or appropriate tests to determine what conditions exist before starting work on electrical equipment or lines? Integrated trainset means a passenger train in which all units of the trainset are designed to operate together to achieve the trainset's structural crashworthiness performance. (1) The leading and the trailing ends of a semi-permanently coupled trainset shall each be equipped with an automatic coupler that couples on impact and uncouples by either activation of a traditional uncoupling lever or some other type of uncoupling mechanism that does not require a person to go between the equipment units. 4(a x)2 = x2 solving for x we have [citation needed], Y-12 made lithium-6 deuteride fusion fuel and U-238 parts, the other two ingredients of secondaries. Tier I means operating at speeds not exceeding 125 mph. (a) General. Calculate the potential at the centre of the hexagon. Thus, even with the presence of discharging current of \[1800A\], the atmosphere maintains its electrical neutrality. ), (ii) Only one rescue access window is required in a seating area in a passenger compartment if -. Intercom system means a two-way, voice communication system. (b) For purposes of this part, passenger equipment will be considered in use prior to departure but after it has received, or should have received, the inspection required under this part for movement and is deemed ready for passenger service. (5) Vertical handrails and handholds shall be installed to continue to a point at least equal to the height of the top edge of the control cab door. E = EA cos + EB cos Ans: Since \[E=\frac{dv}{dr}=\frac{10V}{1\times {{10}^{-2}}}=1000\frac{V}{M}\], Since surface A is an equipotential surface i.e., \[\Delta V=0\]. There shall also be no complete separation of the post, its connection to the underframe, its connection to either the roof structure or the anti-telescoping plate (if used), or of its supporting car body structure. Are work surfaces kept dry or appropriate means taken to assure the surfaces are slip-resistant? Are chemical piping systems clearly marked as to their content? (The direction of \[\hat{n}\] is from side \[1\]to side \[2\]). The rate of alpha emission of fissile nuclei is one to two million times that of spontaneous fission, so weapon engineers are careful to use fuel of high purity. Determine the potential energy of the system. Therefore, the electric field in the space between the two cylinders is \[\frac{\lambda }{2\pi {{\in }_{0}}d}\]. If compressed air is used for cleaning off clothing, is the pressure reduced to less than 10 psi? Is there a written hazard communication program dealing with Material Safety Data Sheets (MSDS) labeling, and employee training? Petitions for grandfathering shall include: (i) The name, title, address, and telephone number of the primary person to be contacted with respect to the petition; (ii) Information, including detailed drawings and material specifications, sufficient to describe the actual construction of the equipment; (iii) Engineering analysis sufficient to describe the likely performance of the static end strength of the equipment and the likely performance of the equipment in derailment and collision scenarios pertinent to the equipment's static end strength; (iv) A description of risk mitigation measures that will be employed in connection with the usage of the equipment on a specified rail line or lines to decrease the likelihood of accidents involving the use of the equipment; and. (c) Each passenger car and each unpowered vehicle added to a passenger train shall receive a Class I or Class IA brake test at the time it is added to the train unless notice is provided to the train crew that a Class I brake test was performed on the car within the previous calendar day and the car has not been disconnected from a source of compressed air for more than four hours prior to being added to the train. Draw a graph to show the variation of E with perpendicular distance r from the line of charge (CBSE Delhi 2018) (d) If the engineer determines that the brakes are not operating properly, the engineer shall stop the train and follow the procedures provided in 238.15. (9) All center castings on trucks are not cracked or broken, to the extent possible without jacking the car and rolling out the trucks. (3) Identify the specific procedures and criteria for conducting the initial and periodic safety appliance inspections in accordance with the requirements and criteria contained in paragraph (i) of this section. (1) Each passenger car in a Tier III trainset shall have at each non-cab end of the car, placed ahead of the occupied volume, two side structures capable of resisting a: (i) 150,000-pound horizontal force applied at floor height without failure; (ii) 20,000-pound horizontal force applied at roof height without failure; and. Is there safe clearance for walking in aisles where motorized or mechanical handling equipment is operating. Is all machinery and equipment kept clean and properly maintained? \[{{B}_{1}}\] and \[{{B}_{2}}\] are two sharp metallic brushes. Total required capacitance is given as, $C=2\mu F$. 2EA = \(\frac{\sigma A}{\varepsilon_{0}}\) (3) A third point charge Q of unknown magnitude and sign is placed on the line joining the charges such that the system remains in equilibrium. Answer: 20301 and 20302; (4) Specifically address the number, dimension, location, and manner of application of each safety appliance contained in the standard; (5) Provide specific analysis regarding why and how the standard was developed and specifically discuss the need or benefit of the safety appliance arrangement contained in the standard; (6) Include drawings, sketches, or other visual aids that provide detailed information relating to the design, location, placement, and attachment of the safety appliances; and. (b) Particular end-facing exterior glazing requirements. Are industrial trucks with internal combustion engine operated in buildings or enclosed areas, carefully checked to ensure such operations do not cause harmful concentration of dangerous gases or fumes? (a) Deduce the expression for the torque acting on a dipole of dipole moment \(\vec{P}\) in the presence of a uniform electric field \(\vec{E}\) The cab ends of Tier III trainsets shall comply with the requirements of appendix F to this part to demonstrate the integrity of the end structure. This record shall be maintained in writing or electronically, provided FRA has access to the record upon request. (i) For 0 < x < a = 3 NC-1 m2, Important Questions for Class 12 Physics with Answers, NCERT Solutions for Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes, NCERT Solutions for Class 12 English Flamingo Chapter 4 The Rattrap, Childhood Important Extra Questions and Answers Class 11 English Hornbill, NCERT Solutions for Class 10 English First Flight Chapter 9 Madam Rides the Bus, Keeping Quiet Extra Questions and Answers Important Questions Class 12 English Flamingo, Message Writing for Class 5 Format, Examples, Topics, Exercises, Notice Writing Class 8 Format, Examples, Topics, Exercises, Unseen Passage with Questions and Answers, Invitation and Replies Class 12 Format, Examples, Solved CBSE Sample Papers for Class 10 2022-2023 Pdf with Solutions, Concise Mathematics Class 10 ICSE Solutions, F = \(\frac{1}{4 \pi \varepsilon_{0}} \frac{q_{1} q_{2}}{r^{2}}\). Pure fission weapons historically have been the first type to be built by new nuclear powers. 83 FR 59219, Nov. 21, 2018, unless otherwise noted. For a solid sphere p = \( \frac{q}{\frac{4}{3} \pi R^{3}}\) = \(\frac{q}{\text { volume }}\). Are employees strictly forbidden from taking a position directly over or in front of a tire while it's being inflated? The graph is as shown. Are non-slip safety feet provided on each ladder? 6. When coupled together in any combination to join two vehicles, AAR Type H and Type F tight-lock couplers satisfy the requirements of this paragraph (a). You may obtain a copy of the incorporated document from the American Public Transportation Association, 1666 K Street NW., Washington, DC 20006, www.aptastandards.com. Answer: Critical buckling stress means the minimum stress necessary to initiate buckling of a structural member. Lateral means the horizontal direction perpendicular to the direction of travel. (c) The inspection, testing, and maintenance plan required by this section is not intended to address and should not include procedures to address employee working conditions that arise in the course of conducting the inspections, tests, and maintenance set forth in the plan. These designations shall not be changed without at least 30 days' advance written notice to FRA's Associate Administrator for Safety. Calculate the capacitance of the capacitor. You can download the paper by clicking the button above. When spillage occurs during fueling operations, is the spilled fuel cleaned up completely, evaporated, or other measures taken to control vapors before restarting the engine? Seat crashworthiness (passenger and cab crew). Displaying title 49, up to date as of 12/08/2022. (3) State of California, Department of Consumer Affairs, Bureau of Home Furnishings and Thermal Insulation, 3485 Orange Grove Avenue, North Highlands, CA 95660-5595. The total wartime output of Oralloy produced at Oak Ridge by July 28, 1945 was 165 pounds (74.68 kg). Does the emergency action plan comply with requirements of T8CCR 3220(a)? Show that the capacitance of a spherical capacitor is given by\[C=\frac{4\pi {{\in }_{0}}{{r}_{1}}{{r}_{2}}}{{{r}_{1}}-{{r}_{2}}}\] where \[{{r}_{1}}\] and \[{{r}_{2}}\] re the radii of outer and inner spheres, respectively. (iii) Each railroad shall retain records of the inspection, testing, and maintenance of the emergency window exits for two calendar years after the end of the calendar year to which they relate. Is it prohibited to place ladders on boxes, barrels, or other unstable bases to obtain additional height? Two charges \[5\times {{10}^{-8}}C\] and \[-3\times {{10}^{-8}}C\] are located \[16cm\] apart. (e) Service. When the IIP Program is first established; To all new workers, except for construction workers who are provided training through a Cal/OSHA approved construction (iii) For b x< The requirements of this appendix are intended to be equivalent to the requirements of those sections and allow for the application of dynamic performance criteria to cab cars and MU locomotives as an alternative to the requirements of those sections. (f) Vestibule doors and other interior doors intended for passage through a passenger car. Password requirements: 6 to 30 characters long; ASCII characters only (characters found on a standard US keyboard); must contain at least 4 different symbols; [citation needed]. Inspection, testing, and maintenance plan. (2) Any glazing material certified to meet the requirements of this section shall be re-certified by the same means (as originally certified) if any changes are made to the glazing that may affect its mechanical properties or its mounting arrangement on the vehicle. (b) Definitions. = \(\oint \vec{E} \cdot \overrightarrow{d s}\), For a given case Safety appliances installed at the option of the railroad shall be firmly attached with mechanical fasteners and shall meet the design and installation requirements provided in this section. Scoring good marks in class 12 board exams is extremely important for every student. Two-point charges of+3 C each are 100 cm apart. (a) What is the total capacitance of the combination, Ans: Capacitance of each of the three capacitors, \[C=9pF\]. (4) Cars with a sleeping compartment or similar private compartment. (CBSEAI 2019) Are changes of direction or elevations readily identifiable? [67 FR 42910, June 25, 2002, as amended at 74 FR 25175, May 27, 2009; 83 FR 59228, Nov. 21, 2018]. (3) Paragraphs (b) and (c) of 238.309 apply beginning September 9, 1999. Why are electric field lines perpendicular at a point on an equipotential surface of a conductor? This term includes a passenger coach, cab car, and an MU locomotive. Answer: This is because the charges are distributed symmetrically with respect to the cube. (a) Number and location. Will the industrial truck's parking brake effectively prevent the vehicle from moving when unattended? (CBSE 2019C) (12) On passenger cars so equipped, public address and intercom systems shall be operative and function as intended. Question 26. (b) Alerter or deadman control timing shall be set by the operating railroad taking into consideration maximum train speed and capabilities of the signal system. This content is from the eCFR and is authoritative but unofficial. in the direction of AP, The two fields are equal in magnitude but have different directions. (f) Each seat provided for an employee regularly assigned to occupy a power car cab and any floor-mounted seat in the cab shall be: (1) Secured to the car body with an attachment having an ultimate strength capable of withstanding the loads due to the following individually applied accelerations acting on the combined mass of the seat and the mass of a seat occupant who is a 95th-percentile adult male: (2) Designed so that all adjustments have the range necessary to accommodate a person ranging from a 5th-percentile adult female to a 95th-percentile adult male, as persons possessing such characteristics are specified, correcting for clothing as appropriate, in any recognized survey after 1958 of weight, height, and other body dimensions of U.S. adults; (3) Equipped with lumbar support that is adjustable from the seated position; (4) Equipped with force-assisted, vertical-height adjustment, operated from the seated position; (5) Equipped with a manually reclining seat back, adjustable from the seated position; (6) Equipped with an adjustable headrest; and. In these circumstances, a Class II brake test shall be performed prior to the train's departure from the terminal complex with passengers; (2) Prior to the first morning departure of each commuter or short-distance intercity passenger train where a Class I brake test remains valid as provided in 238.315(a)(1); (3) When previously tested units (i.e., cars that received a Class I brake test within the previous calendar day and have not been disconnected from a source of compressed air for more than four hours) are added to the train; (4) When cars or equipment are removed from the train; and. (2) The roller bearing shall be disassembled from the axle and inspected internally if: (i) It shows any external sign of damage; (ii) It makes any unusual noise when its wheel set is spun freely (an on-track rolling test is acceptable) or when the bearing is manually rotated; (iii) Its truck was involved in a derailment at a speed of more than 10 miles per hour; or. Is the controller for each motor in excess of two horsepower, rated in horsepower equal to or in excess of the rating of the motor is serves? right bisector of the dipole AB at a distance r from its midpoint 0. (o) All passenger trains to which this part applies shall comply with the requirements covering the use of two-way end-of-train devices contained in part 232 of this chapter. ${{V}^{1}}=A\times d=90\times {{10}^{-4}}\times 25\times {{10}^{-3}}=2.25\times {{10}^{-4}}{{m}^{3}}$. Are methods provided to protect the operator and other employees in the machine area from hazards created at the point of operation, ingoing nip points, rotating parts, flying chips, and sparks? (1) Corner posts. (b) The input data, in the form of an input file, contains the geometry for approximately the first 12 feet of the rigid locomotive design. Safe procedures for cleaning, repairing, servicing and adjusting equipment and machinery. Q:4. Specifically, the cab ends of Tier III trainsets shall comply with the requirements of this appendix to demonstrate the integrity of the end structure. E = E(top)0 + E(bottom)0 + E(sides) E = EA = 2rlE. However, the earliest implosion weapons had pits so close to criticality that accidental detonation with some nuclear yield was a concern. APTA means the American Public Transportation Association. Find the (a) work done on the particle, (b) change in the electric potential energy of the particle, and (c) magnitude of the electric field. A Review, Natural food additives, ingredients and fl avourings. (CBSE Delhi 2018) The two fields at P are in opposite directions. WebAnswer (1 of 2): Not in the near field. (3) If FRA finds that the petition does not comply with the requirements of this section, or that the proposed plan is not acceptable or that the proposed changes are not justified, or both, the petition will be denied, normally within 90 days of its receipt. is located at the center of a spherical cavity in a large uncharged metallic spherical shell. Or Do powder-actuated tools operators have and use appropriate personal protective equipment such as hard hats, safety goggles, safety shoes and ear protectors? 552(a) and 1 CFR Part 51. (8) All trucks are equipped with a device or securing arrangement to prevent the truck and car body from separating in case of derailment. (n) Before adjusting piston travel or working on brake rigging, the cutout cock in the brake pipe branch must be closed and the air reservoirs must be voided of all compressed air. Answer: A point charge q is at a distance of d/2 directly above the center of a square of side d, as shown In the figure. When pipelines are heated by electricity, steam or other external source, are suitable warning signs or tags placed at unions, valves, or other serviceable parts of the system? If reinforcement is used to provide the shear value, the reinforcement shall have full value for a distance of 18 inches up from the underframe connection and then taper to a point approximately 30 inches above the underframe connection; or. oily rags) stored in covered metal receptacles and removed from the worksite promptly? For national powers engaged in a nuclear arms race, this fact of 238U's ability to fast-fission from thermonuclear neutron bombardment is of central importance. Answer: FRA's Associate Administrator for Safety may prohibit or revoke a railroad's ability to utilize an automated tracking system in lieu of tagging if FRA finds that the automated tracking system is not properly secure, is inaccessible to FRA or a railroad's employees, or fails to adequately track or monitor the movement of defective equipment. Capacitance \[C\] of a parallel plate capacitor is given by, \[\Rightarrow {{\in }_{0}}=8.854\times {{10}^{-12}}{{N}^{-1}}{{m}^{-2}}{{C}^{-2}}\], \[\Rightarrow C=\frac{8.854\times {{10}^{-12}}\times 6\times {{10}^{-3}}}{3\times {{10}^{-3}}}\], \[\Rightarrow C=17.71\times {{10}^{-12}}F\Rightarrow C=17.71pF\], Potential \[V\] is related with the charge \[q\] and capacitance \[C\] as, \[V=\frac{q}{C}\Rightarrow q=VC\Rightarrow q=1.771\times {{10}^{-9}}C\], \[\Rightarrow q=100\times 17.71\times {{10}^{-12}}C=17.71pF\]. Answer: is a unit vector normal to the surface at a point and \[\sigma \] is the surface charge density at that point. 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