Power for lighting in passanger coach, in a long distance electric train, is provided_________________?

Related Mcqs:

1. The electric charge of 100 °C is 13cm apart from another charge 16.9°C electric force between them is_____________?

   A. 9x107N
   B. 900N
   C. 9x105N
   D. 9x106N

2. Electric intensity at infinite distance from the point charge is_____________?

   A. zero
   B. infinite
   C. positive
   D. negative

3. In a steam locomotive electric power is provided through_____________?

   A. overhead wire
   B. battery system
   C. small turbo-generator
   D. diesel engine generator

4. What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ?

   A. 20%
   B. 80%
   C. 40%
   D. 50%

5. The maximum a.c. power output from a class A power amplifier is 10 W. What should be the minimum power rating of the transistor used ?

   A. 10 W
   B. 15 W
   C. 5 W
   D. 20 W

6. The output power of a transistor amplifier is more than the input power because the additional power is supplied by__________________?

   A. Transistor
   B. Biasing circuit
   C. Collector supply VCC
   D. None of the above

7. Which instrument is used to measure the power of electric circuit ?

   A. Wavemeter
   B. Viscometer
   C. Wattmeter
   D. None of these

   Submitted by: Rashid Mehmood

8. The wheels of a train, engine as well as bogies, are slightly tapered to_____________?

   A. reduce friction
   B. increase friction
   C. facilitate braking
   D. facilitate in taking turns

9. The speed of a superfast train is______________?

   A. 60 kmph
   B. 75 kmph
   C. 100 kmph
   D. more than 100 kmph

10. The resistance encountered by a train in motion is on account of_________________?

    A. resistance offered by air
    B. friction at the track
    C. friction at various parts of the rolling stock
    D. all of the above