| 1 |
When a motor is over loaded then the magnitude of back emf. |
- A. Increases
- B. Decreases
- C. Remain constant
- D. Zero
|
| 2 |
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|
| 3 |
The device in the circuit that consume electrical energy are known as. |
- A. Dissipaters
- B. Generator
- C. Load
- D. Motors
|
| 4 |
the core of transformer is laminated so reduce. |
- A. Magnetic loss
- B. Hysteresis loss
- C. Eddy current loss
- D. Electric loss
|
| 5 |
Self inductance of a long solenoid is given by |
- A.
- B.
- C.
- D. None of the above
|
| 6 |
split rings are used in |
- A. A.C. generator
- B. A.C. motor
- C. Transformer
- D. D.C. motor
|
| 7 |
The motional emf is give by |
- A. qvB
- B. IBL
- C. eBL
- D. vBL
|
| 8 |
Electromagnetic induction obeys law of conservation |
- A. Charge
- B. Energy
- C. Momentum
- D. Mass
|
| 9 |
Output of D.C. motor is |
- A. A.C. energy
- B. Mechanical energy
- C. Chemical energy
- D. D.C. energy
|
| 10 |
The motional emf depends upon the |
- A. Length of conductor
- B. Speed of conductor
- C. Strength of magnet
- D. All of these
|
