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A electric motor is a device which trans...

A electric motor is a device which transforms :

A

mechanical energy to electrical energy

B

heat energy to electrical energy

C

electrical energy to heat energy only

D

electrical energy to mechanical energy

Text Solution

Verified by Experts

The correct Answer is:
D
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. The force experienced by a current-carrying wire placed in a magnetic ...

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  2. A current flows in a wire running between the S and N poles of a magne...

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  3. A electric motor is a device which transforms :

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  4. A magnetic field exerts no force on

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  5. A horizontal wire carries a current as shown as shown in Figure below ...

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  6. If the current in a wire is flowing in the vertically downward directi...

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  7. Which way does the wire in the diagram below tend to move ?

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  8. Name the derive which converts mechanical energy into electric energy.

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  9. Out of an A.C. generator and a D.C. generator : (a) which one uses a...

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  10. Name the phenomenon which is made use of in an electric generator.

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  11. Name the rule which gives the direction of induced current?

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  12. What condition is necessary for the production of current by electroma...

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  13. What is the basic difference in the design of an a.c. generator and d....

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  14. What is the function of brushes in an electric generator ?

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  15. When a wire is moved up and down in a magnetic field, a current is in...

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  16. When current is 'switched on' and 'switched off' in a coil, a current ...

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  17. What is the major difference between the simple alternator and most pr...

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  18. List three sources of magnetic fields.

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  19. Two circular coils A and B are placed close to each other. If the curr...

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  20. (a) What is the difference between alternating current and direct curr...

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