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CBSE
Class 12 Physics
Semiconductor Electronics: Materials, Devices And Simple Circuits
Quiz 2
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In full wave rectifier, input a.c. current has a frequency v. The output frequency of current is :
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V/2
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V
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2V
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None
Explanation
2V
Winch of the following gate is not an universal gate?
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OR
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NOT
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AND
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NAND
Explanation
NAND
Zener diode is used for:
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producing oscillations in a oscillator
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amplification
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stabilisation
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rectification
Explanation
stabilisation
In semi conductor, at room temperature :
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the valence bond is partially empty and the conduction band is partially filled
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the valence band is completely filled and the conduction band is partially filled
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the valence band is completely filled
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the conduction band is completely empty
Explanation
the valence bond is partially empty and the conduction band is partially filled
Crystal diode is:
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amplifying device
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fluctuating device
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non-linear device
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linear device
Explanation
non-linear device
The part of a transistor which is heavily doped to produce a large number of majority carriers is :
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base
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emitter
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collector
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None of these
Explanation
emitter
A p-type semiconductor is:
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negatively charged
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positively charged
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uncharged
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None of these
Explanation
uncharged
The material most commonly used to manufacture electronic solid state devices is :
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copper
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silicon
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germanium
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aluminium
Explanation
silicon
What is the number of possible crystal systems?
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5
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7
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14
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16
Explanation
7
A forward biased diode is:
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a
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b
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c
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d
Explanation
a
0 h : 0 m : 1 s
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