| 1 |
In A.C. generator flux will be zero if coil is to the field. |
- A. 90<sup>o</sup>
- B. 45<sup>o</sup>
- C. Parallel
- D. Inclined
|
| 2 |
The lines will be in the form of concentric circles, if conductor is: |
- A. Circular
- B. Straight
- C. Solenoid
- D. None of these
|
| 3 |
According to Fleming's left hand rule the direction of magnetic field is indicated by: |
- A. Thumb
- B. Forefinger
- C. Middle finger
- D. Right hand rule
|
| 4 |
<p class="MsoNormal">The refractive index of ice is:<o:p></o:p></p> |
- A. <p class="MsoNormal">1.00<o:p></o:p></p>
- B. <p class="MsoNormal">1.33<o:p></o:p></p>
- C. <p class="MsoNormal">1.31<o:p></o:p></p>
- D. <p class="MsoNormal">2.42<o:p></o:p></p>
|
| 5 |
Number of poles in a magnet is: |
- A. One
- B. Two
- C. Three
- D. Unlimited
|
| 6 |
Transformer which increase voltage is called. |
- A. Step-up transformer
- B. Step down transformer
- C. D.C.Moter
- D. A.C.genrator
|
| 7 |
If the change of current in a circuit induces a current in another circuit, this phenomena is known as: |
- A. Self induction
- B. Mutual induction
- C. Electromagnetic induction
- D. None mutual induction
|
| 8 |
If the current in a wire which is placed perpendicular to a magnetic field increases, the force on the wire. |
- A. Increases
- B. Decreases
- C. Remains the same
- D. Will be zero
|
| 9 |
Transformer Works on the principle of: |
- A. Self induction
- B. Mutual induction
- C. Electro statatic
- D. Induction
|
| 10 |
The force on a current carrying conductor is maximum if angle between field and conductor is: |
- A. 0<sup>o</sup>
- B. 90<sup>o</sup>
- C. 180<sup>o</sup>
- D. 45<sup>o</sup>
|
