| 1 |
The chargeless region after formation of Pn junction is called: |
- A. Free region
- B. Depletion region
- C. Field region
- D. U.V region
|
| 2 |
The semi conductor diode has the property of |
- A. Two way conduction
- B. Zero conduction
- C. One way conduction
- D. Amplification
|
| 3 |
Which factor does not affect the conductivity of PN-Junction diode. |
- A. Doping
- B. Temperature
- C. Voltage
- D. Pressure
|
| 4 |
When a PN-Junction is reverse biased the depletion region is. |
- A. Widened
- B. Narrowed
- C. Normal
- D. None of these
|
| 5 |
The p-n junction in which p side is connected to+ive and n-side is -ve the junction is said to be: |
- A. Neutral
- B. Forward biased
- C. Reversed biased
- D. None of above
|
| 6 |
One use of a single p-n junction semiconductor in an electrical circuit is a |
- A. Rectifier
- B. Transistor
- C. Battery
- D. Diode
|
| 7 |
LDR becomes necessary when op amp is used as a |
- A. Night switch
- B. Inverter
- C. Comparator
- D. Rectifier
|
| 8 |
In a transistor, collector current is controlled by: |
- A. Collector voltage
- B. Base current
- C. Collector resistance
- D. All of the above
|
| 9 |
Which one has greater cone of impurity among all: |
- A. Emitter
- B. Base
- C. Collector
- D. All are pure
|
| 10 |
For rectification we use. |
- A. Transformer
- B. Diode
- C. Choke
- D. Generator
|
