16226108
Descripción
Test por Mboneni Mulaudzi, actualizado hace más de 1 año
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Creado por Mboneni Mulaudzi
hace casi 6 años
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Pregunta 1
Pregunta
A Train Driver when on duty, must [blank_start]not[blank_end] vacate the footplate of his motor coach or driving trailer unless in the judgement of the [blank_start]Train Driver[blank_end] the circumstances require this to be done.
Respuesta
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not
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Train Driver
Pregunta 2
Pregunta
What must the Train Driver do when he leaves the footplate unattended for not longer than 10 minutes?
Respuesta
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the automatic train brakes must be fully applied,
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in the case of an electric motor coach or driving trailer, the master controller reversing key and the control switch key must be removed.
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the hand brakes must be fully applied,
Pregunta 3
Pregunta
What is the Train Driver's duty when taking over a train?
Respuesta
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A Train Driver must be on duty and take charge of the train at the appointed time
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A Train Driver must ensure that he/she first take charge of the train at the appointed time before signing on duty.
Pregunta 4
Pregunta
Upon identifying a track defect or damage to the track what should a Train Driver do?
The Train Driver is personally responsible to immediately [blank_start]report[blank_end] full particulars thereof. The Train Driver must [blank_start]assure[blank_end] himself that the information is received and clearly understood. If, in the judgement of the Train Driver or other employee the track is unsafe for the passage of trains he must immediately take such steps as may be necessary to ensure the safety of following and opposing trains.
Respuesta
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report
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assure
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judgement
Pregunta 5
Pregunta
The dead man's feature of the master controller on motor coaches and driving trailers is always [blank_start]ready[blank_end] to shut off the power to the [blank_start]traction[blank_end] motors and apply the brakes in emergency when the hand is lifted from the master controller handle.
Respuesta
-
ready
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traction
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traction
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lifted
Pregunta 6
Pregunta
Personnel permitted to drive or move electric rolling stock under power may enter a high-voltage or auxiliary high-voltage compartment under "live" overhead wires, and then only provided the employee concerned ensures that -
Respuesta
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he retains the reverser key, or one of the interlock keys, in his possession for the full period the high-voltage compartment door is open.
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before entering any high-voltage or auxiliary high-voltage compartment, the pantographs of all the motor coaches are visibly checked to be in the housed position, the auxiliary machines have stopped running and that the vehicle is stationary.
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Some else is standing by the high tension door for the full period the high-voltage compartment door is open.
Pregunta 7
Pregunta
Discover why the overhead current is earthed as soon as the pantograph touches the contact wire:
What would you determine if you lower the pantograph, isolate the MG/MA - set and raise the pantograph again.
Respuesta
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If the current is again earthed the defect is on the roof equipment and the traction motors and MG/MA - set can not be utilised.
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If the overhead current is not earthed with the MG/MA - set isolated, the MG/MA - set is defective.
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If the current is again earthed the defect is on the MG/MA set and the traction motors and roof equipment set can be utilized.
Pregunta 8
Pregunta
List all equipment that must be tested when the overhead current is earthed by a motor coach
Respuesta
-
Defective roof equipment, Defective motor generator/alternator set, Defective traction motors, Defective switches in high-tension compartment or defective main resistance.
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Defective Master Controller, Defective compressor, Defective exhauster.
Pregunta 9
Pregunta
compile a list of reason why the 5M2A motor coach-exhauster will stop running
Respuesta
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Control circuit breaker open.
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insufficient compressed air
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Control push button not depressed.
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Traction motor overload relay tripped
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Generator/alternator-overload relay tripped.
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Exhauster-circuit breaker open.
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Exhauster contactor defective.
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Exhauster-overload relay tripped.
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Exhauster-isolating switch open
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Exhauster motor defective.
Pregunta 10
Pregunta
Choose the correct answer for traction motors to get earthed
Respuesta
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Armature or field windings earthed.
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Broken armature shaft.
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Broken gearwheel or pinion (tooth lands between gears).
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Burst armature bindings.
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