| 1 |
The SI unit of flux density is. |
- A. NA-1 m2
- B. NA-1 m-1
- C. NAm-1
- D. NA-1 m
|
| 2 |
1 tesla = |
- A. 1 MAm<sup>-1</sup>
- B. 1NA<sup>-1</sup>m
- C. 1NA<sup>-1</sup>m<sup>-1</sup>
- D. None of above
|
| 3 |
When a charge is projected perpendicular to a uniform magnetic field, tis path is |
- A. Spiral
- B. Helix
- C. Ellipse
- D. Circular
|
| 4 |
If the length and number of turns of a solenoid are doubled strength of magnetic field with. |
- A. Be doubled
- B. Become half
- C. Not change
- D. Be four time
|
| 5 |
The function of three anodes a C.R.O is |
- A. To accelerate electrons only
- B. To focus the electrons only
- C. To control the brightness of spot on screen
- D. To accelerate and focus the electrons
|
| 6 |
A device used for detection of current is called. |
- A. Inductor
- B. Voltmeter
- C. Capacitor
- D. Galvanometer
|
| 7 |
In CRO, the output waveform of time base generator is |
- A. Circular
- B. Square
- C. Sinusoidal
- D. Saw-toothed
|
| 8 |
The sensitivity of Galvanometer can be increased by: |
- A. Increasing C/BAN factor
- B. Decreasing C/BAN factor
- C. Increasing angle θ
- D. All of above
|
| 9 |
Cathode ray oscilloscope works by deflecting a beams |
- A. Neutrons
- B. Protons
- C. Electrons
- D. Positron
|
| 10 |
A charged particle having charge 'q' is moving at right angle to magnetic field. The quantity which varies is. |
- A. Speed
- B. Kinetic energy
- C. Path of motion
- D. angular velocity
|
