Related Questions

If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking
A Regenerative
B Plugging
C Dynamic braking
D None of the above
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
Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be
A Level compounded
B Under compounded
C Cumulatively compounded
D Differentially compounded
In recent times, the “dynamic brake system” is becoming popular in modern railways. The dynamic brake system coverts Kinetic energy to________:
A Potential energy
B Electricity
C Sound energy
D Magnetic energy
A motor pool has 300 vehicles of which 30% are trucks. 20% of all the vehicles in the motor pool are diesel, including 15 trucks. What percent of the motor pool is composed of vehicles that are neither trucks nor diesel?
A 165%
B 90%
C 65%
D 10%
By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?
A Frame
B Shaft
C Commutator
D Stator
Of the 120 households in an area, 55 have cars, 35 have motor bikes, and 20 have both cars and motor bikes. How many of the households in the area have neither cares nor motor bikes?
A 110
B 90
C 50
D 30
One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven
A Runs as a generator
B Does not run as a generator
C Also runs as a motor comes to stop after sometime
D None of these
A synchronous motor installed at the receiving end substation operates with such an excitation that it takes power at lagging power factor. Now if the applied voltage of the synchronous motor goes down, the power factor of the synchronous motor will
A remain same
B go down
C improve
D none of the above
Which of the following braking systems is used on steam locomotives?
A Hydraulic system
B Pneumatic system
C Vacuum system
D None of the above

Next steps