Semiconductor Electronics : Materials, Devices and Simple Circuits
- The intrinsic semiconductor becomes an insulator at
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At 0 K, motion of free electrons stop. Hence conductivity becomes zero. Therefore, at 0 K intrinsic semiconductor becomes insulator.
Correct Option: A
At 0 K, motion of free electrons stop. Hence conductivity becomes zero. Therefore, at 0 K intrinsic semiconductor becomes insulator.
- An alternating current can be converted into direct current by a
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rectifier
Correct Option: D
rectifier
- In forward bias, the width of potential barrier in a p-n junction diode
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We know that in forward bias of p-n junction diode, when positive terminal is connected to p-type diode, the repulsion of holes takes place which decreases the width of potential barrier by striking the combination of holes and electrons.
Correct Option: B
We know that in forward bias of p-n junction diode, when positive terminal is connected to p-type diode, the repulsion of holes takes place which decreases the width of potential barrier by striking the combination of holes and electrons.
- When a p-n junction diode is reverse biased the flow of current across the junction is mainly due to
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When p-n junction is reverse biased, the flow of current is due to drifting of minority charge carriers across the junction.
Correct Option: B
When p-n junction is reverse biased, the flow of current is due to drifting of minority charge carriers across the junction.
- In the diagram, the input is across the terminals A and C and the output is across B and D. Then the output is
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The given circuit is a circuit of full wave rectifier.
Correct Option: C
The given circuit is a circuit of full wave rectifier.