| 1 |
In a transistor, collector current is controlled by: |
- A. Collector voltage
- B. Base current
- C. Collector resistance
- D. All of the above
|
| 2 |
Photodiode is used for: |
- A. Detection of current
- B. Detection of heat
- C. Detection of light
- D. Both a & b
|
| 3 |
Photo diode is used for detection of. |
- A. Heat
- B. Magnet
- C. Current
- D. Light
|
| 4 |
The gain of transistor amplifier depends upon |
- A. Resistance connected with collector
- B. Resistance connected with base voltage
- C. Input voltage
- D. Output voltage
|
| 5 |
In a transistor, collector current is controlled by: |
- A. Collector voltage
- B. Base current
- C. Collector resistance
- D. All of the above
|
| 6 |
The impurity in the germinium is usually in the ratio of |
- A. 1:10<sup>6</sup>
- B. 1:10<sup>4</sup>
- C. 1:10<sup>8</sup>
- D. 1:10<sup>10</sup>
|
| 7 |
The sensor of light is. |
- A. Transistor
- B. LED
- C. Diode
- D. Light dependent resistance
|
| 8 |
In photovoltaic cell, current is directly proportional to. |
- A. Wavelength of light
- B. Intensity of light
- C. Energy
- D. Frequency of light
|
| 9 |
The ratio Beta in transistor is called. |
- A. Voltage gain
- B. Emitter gain
- C. Current gain
- D. Nuclear gain
|
| 10 |
Greater concentration of impurity is added in. |
- A. Base
- B. Emitter
- C. Collector
- D. LED
|
