| 1 |
D.C. motor converts. |
- A. Mechanical energy into electrical energy
- B. Mechanical energy into chemical energy
- C. Electrical energy into mechanical energy
- D. Electrical energy into chemical energy
|
| 2 |
The magnetic field of a solenoid resembles as: |
- A. Iron wire
- B. U-shape magnet
- C. Bar magnet
- D. Point charge.
|
| 3 |
When an electric current passes through a conductor, which field is produced around it? |
- A. Electric field
- B. Magnetic field
- C. Gravitational field
- D. Electrostatic field
|
| 4 |
Number of poles in a magnet is: |
- A. One
- B. Two
- C. Three
- D. Unlimited
|
| 5 |
<p class="MsoNormal">Totally reflecting prism is used in:<o:p></o:p></p> |
- A. <p class="MsoNormal">Periscope<o:p></o:p></p>
- B. <p class="MsoNormal">Binoculars<o:p></o:p></p>
- C. <p class="MsoNormal">Periscope and binocular<o:p></o:p></p>
- D. <p class="MsoNormal">Telescope<o:p></o:p></p>
|
| 6 |
Which type of energy is converted into mechanical energy in the D.C. Motor. |
- A. Magnetic energy
- B. Heat energy
- C. Electrical energy
- D. Chemical energy
|
| 7 |
<p class="MsoNormal">Bouncing back of light after striking the surface is called:<o:p></o:p></p> |
- A. <span style="font-size:11.0pt;line-height:107%;
font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:
Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:Arial;mso-bidi-theme-font:minor-bidi;mso-ansi-language:
EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">Refraction</span>
- B. <p class="MsoNormal">Reflection<o:p></o:p></p>
- C. <p class="MsoNormal">Diffraction<o:p></o:p></p>
- D. <p class="MsoNormal">Interference<o:p></o:p></p>
|
| 8 |
When a current carrying conductor is placed in magnetic field at right angle to it. The direction of force acting upon it is: |
- A. The same as direction of field
- B. Opposite the direction of field
- C. Makes an angle of 45<sup>o</sup>with the current
- D. At right angle to both the field and the current.
|
| 9 |
The lines will be in the form of concentric circles, if conductor is: |
- A. Circular
- B. Straight
- C. Solenoid
- D. None of these
|
| 10 |
If current is flowing from bottom end to the top end in a wire, according to right hand rule the direction of line of forces would be: |
- A. Anti-clock wise
- B. Clock wise
- C. Left and Right
- D. Along the conductor.
|
