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which of the following statements is inc...

which of the following statements is incorrect?

A

Both ac and dc dynamo have a field magnet

B

Both ac and dc dynamo have an armature

C

Both ac and dc dynamo convert mechanical energy into electrical energy

D

Both ac and dc dynamo have slip rings

Text Solution

Verified by Experts

The correct Answer is:
D

Only ac dynamo have slip rings.
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A2Z-ELECTROMAGNETIC INDUCTION-Applications Of Emi
  1. when the speed of a dc motor increase the armature current

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  2. The output of a dunamo using a splitting commutator is

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  3. which of the following statements is incorrect?

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  4. The coil of dynamo is rotating in a magnetic field. The devloped induc...

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  5. Armature current in dc motor will be maximum when

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  6. The armature of dc motor has 20Omega resistance. It draws current of 1...

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  7. The number of turns in the coil of an ac genrator is 5000 and the area...

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

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  9. An electric motor operating on a 60 V dc supply draws a currrent of 1...

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  10. An electric motor operating on a 60 V dc supply draws a currrent of 1...

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  11. A motor having an armature of resistance 2Omega is designed to operate...

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  12. A transformer is employed to

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  13. What is increase in step-down transformer?

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

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  15. In a transformer 220 ac voltage is increased to 2200 volts. If the nu...

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

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

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

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

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  20. An ideal transformer has 100 turns in the primary and 250 turns in the...

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