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In a dc motor, induced e.m.f. will be ma...

In a dc motor, induced e.m.f. will be maximum

A

when motor takes maximum speed

B

when motor starts rotating

C

when speed of motor increase

D

when motor is switched off

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The correct Answer is:
A
Back emf `prop` speed of motor.
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A2Z-ELECTROMAGNETIC INDUCTION-Applications Of Emi
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  6. A motor having an armature of resistance 2Omega is designed to operate...

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  7. A transformer is employed to

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  8. What is increase in step-down transformer?

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  9. The transformation ratio in the step-down transformer is

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  11. The ratio of secondary to the primary turns in a transformer is 3:2. I...

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  12. The primary winding of a transformer has 100 turns and its secondary w...

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  13. A step-down transformer is connected to 2400 volts line and 80 amperes...

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  14. A loss free transformer has 500 turns on its primary winding and 2500 ...

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  16. A transformer is employed to reduce 220V to 11V. The primary draws a ...

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  17. in a step-up transformer, the turn ratio is 1:2A leclanche cell (e.m.f...

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  18. A 100% efficient transformer has 100 turns in the primary and 25 turns...

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  19. In a lossless transformer an alternating current of 2 amp is flowing i...

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