| 1 |
In a transistor, collector current is controlled by: |
- A. Collector voltage
- B. Base current
- C. Collector resistance
- D. All of the above
|
| 2 |
The circuit of full wave rectification consist of |
- A. Three diodes
- B. Four diodes
- C. Two diodes
- D. One diode
|
| 3 |
The chargeless region after formation of Pn junction is called: |
- A. Free region
- B. Depletion region
- C. Field region
- D. U.V region
|
| 4 |
Which device is used as a rectifier? |
- A. Capacitor
- B. Transistor
- C. Diode
- D. Transformer
|
| 5 |
the number of terminals in a semiconductor diode are |
|
| 6 |
Rectification is the process of converting. |
- A. D.C. into A.C.
- B. A.C. in to D.C.
- C. Low signal to high
- D. High signal to low
|
| 7 |
The ratio of potential barriers of Ge to Si at room temperatrue is. |
- A. 7:3
- B. 1:3
- C. 2:5
- D. 3:7
|
| 8 |
The output from a full wave rectifier is |
- A. An ac voltage
- B. A dc voltage
- C. Zero
- D. A pulsating unidirectional voltage
|
| 9 |
The colour of light emitted by a LED depends on. |
- A. It forward biased
- B. Its reverse biased
- C. Unbiased
- D. None of these
|
| 10 |
One use of a single p-n junction semiconductor in an electrical circuit is a |
- A. Rectifier
- B. Transistor
- C. Battery
- D. Diode
|
