Related Questions

Which of the following is an advantage of electric traction over other methods of traction?
A Faster acceleration
B No pollution problems
C Better braking action
D All of the above
Which of the following is the disadvantage of electric traction over other systems of traction?
A Corrosion problems in the underground pipe work
B Short time power failure interrupts traffic for hours
C High capital outlay in fixed installations beside route limitation
D Interference with communication lines
An ideal traction system should have
A Easy speed control
B High starting tractive effort
C Equipment capable of withstanding large temporary loads
D All of the above
A traction control system (TCS) in automobiles controls the
A Vibrations on the steering wheel
B Engine power during acceleration
C Torque that is transmitted by the tyres to the road surface
D Stopping distance in case of emergency
What is the position of the Indian Railway under one management are also credited with having a multi gauge and multi traction system?
A First
B Second
C Third
D Fourth
The braking control type traction control system (TCS) generally operates in the speed range of
A Less than 20 kmph
B Less than 40 kmph
C Less than 60 kmph
D More than 60 kmph
Series motor is not suited for traction duty due to which of the following account?
A Less current drain on the heavy load torque
B Current surges after temporary switching off supply
C Self relieving property
D Commutating property at heavy load
Skids occur when the brakes are applied so hard that the front or rear wheels lose traction are called as
A Cornering
B BLowout
C Power
D Braking
Which of the following motors is preferred for traction work?
A Universal motor
B D.C. series motor
C Synchronous motor
D Three-phase induction motor
Why are the D.C. motors preferred for traction applications?
A Torque and speed are inversely proportional to armature current
B Torque is proportional to armature current
C Torque is proportional to square root of armature current
D The speed is inversely proportional to the torque and the torque is proportional to square of armature current

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