| 1 |
In an N-type silicon, which of the following statement is true? |
- A. Electrons are majority carriers & trivalent atoms are the dopants
- B. Electrons are majority carriers & pentavalent atoms are the dopants
- C. Holes are minority carriers & pentavalent atoms are the dopants.
- D. Holes are minority carriers & trivavalent atoms are the dopants.
|
| 2 |
The potential barrier for silicon is. |
- A. 0.7 V
- B. 0.5 V
- C. 0.3 V
- D. 0.9 V
|
| 3 |
Minimum number of semi conductor diodes required for full wave rectification are. |
|
| 4 |
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
|
| 5 |
Greater concentration of impurity is added in. |
- A. Base
- B. Emitter
- C. Collector
- D. LED
|
| 6 |
In a transistor, collector current is controlled by: |
- A. Collector voltage
- B. Base current
- C. Collector resistance
- D. All of the above
|
| 7 |
The semi conductor diode has the property of |
- A. Two way conduction
- B. Zero conduction
- C. One way conduction
- D. Amplification
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| 8 |
Which one has greater cone of impurity among all: |
- A. Emitter
- B. Base
- C. Collector
- D. All are pure
|
| 9 |
When transistor are used in digital circuits they usually operate in the : |
- A. Active region
- B. Break down region
- C. Saturation & cutoff regions
- D. Linear region
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| 10 |
The reverse saturation current in a PN junction diode is only due to: |
- A. Majority carriers
- B. Minoritycarriers
- C. Acceptor ions
- D. Donor ions
|
