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Electronic Devices and Circuits

Electronic Devices and Circuits
Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.

True
False

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Electronic Devices and Circuits
Light dependent resistors are

Highly doped semiconductor
Lightly doped semiconductor
Either A or B
Intrinsic semiconductor

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Electronic Devices and Circuits
As compared to bipolar junction transistor, a FET

Is less noisy
All of these
Has better thermal stability
Has higher input resistance

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Electronic Devices and Circuits
The forbidden energy gap between the valence band and conduction band will be least in case of

Metals
All of these
Insulators
Semiconductors

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Electronic Devices and Circuits
A transistor has a current gain of 0.99 in the CB mode. Its current gain in the CC mode is

99
0.99
100
1.01

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Electronic Devices and Circuits
The most commonly used semiconductor material is

Germanium
Mixture of silicon and germanium
None of these
Silicon

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