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.
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2 |
The ratio Beta in transistor is called. |
- A. Voltage gain
- B. Emitter gain
- C. Current gain
- D. Nuclear gain
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3 |
In case of reverse biasing, current is flown due to: |
- A. Minority charge carriers
- B. Majority charge carriers
- C. Electrons
- D. Protons
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4 |
For rectification we use. |
- A. Transformer
- B. Diode
- C. Choke
- D. Generator
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5 |
The P.D develop in case of germanium is: |
- A. 0.3
- B. 0.7
- C. 0.5
- D. 0.9
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6 |
Conversion of A.C into D.C is called: |
- A. Compton effect
- B. Rectification
- C. Amplification
- D. Pair production
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7 |
For normal transistor the emitter current can be given by |
- A. I<sub>E</sub> = I<sub>C</sub>
- B. I<sub>E</sub> = I<sub>C</sub> + I<sub>B</sub>
- C. I<sub>E</sub> = I<sub>B</sub>
- D. None of these
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8 |
Which device is used as a rectifier? |
- A. Capacitor
- B. Transistor
- C. Diode
- D. Transformer
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9 |
Which diode works at reverse biasing. |
- A. LED
- B. Photo voltaic cell
- C. Photo diode
- D. Silicon diode
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10 |
Transistor was invented by: |
- A. Bardeen
- B. Micheal faraday
- C. Lenz
- D. Newton
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