| 1 |
Greater concentration of impurity is added in. |
- A. Base
- B. Emitter
- C. Collector
- D. LED
|
| 2 |
Transistor was discovered by |
- A. Young
- B. Curie
- C. John Bardeen
- D. Shale's
|
| 3 |
Output resistance of an op amp is |
- A. High
- B. Low
- C. Zero
- D. Equal to input resistance
|
| 4 |
The potential barrier for silicon is. |
- A. 0.7 V
- B. 0.5 V
- C. 0.3 V
- D. 0.9 V
|
| 5 |
Light emitting diodes are made from semiconductors. |
- A. Silicon
- B. Germanium
- C. Carbon
- D. Gallium arsenide
|
| 6 |
A PN junction can not be sued a. |
- A. Rectifier
- B. Amplifier
- C. Detector
- D. LED
|
| 7 |
Base of transistor is of order: |
- A. 10<sup>-11</sup>m
- B. 10<sup>6</sup>m
- C. 10<sup>-8</sup>m
- D. 10<sup>-6</sup>m
|
| 8 |
The reverse saturation current in a PN junction diode is only due to: |
- A. Majority carriers
- B. Minoritycarriers
- C. Acceptor ions
- D. Donor ions
|
| 9 |
Depletion region carries. |
- A. -ve charge
- B. +ve charge
- C. Ions
- D. No charge
|
| 10 |
The term invertor is used for. |
- A. NOR gate
- B. XNOR gate
- C. NAND gate
- D. NOT gate
|
