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Electronic Devices and Circuits

Electronic Devices and Circuits
When avalanche breakdown occurs covalent bonds are not affected.

False
True

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Electronic Devices and Circuits
If too large current passes through the diode

Diode will emit light
All holes will freeze
All electrons will leave
Excessive heat may damage the diode

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Electronic Devices and Circuits
In which of these is reverse recovery time nearly zero?

Tunnel diode
Schottky diode
PIN diode
Zener diode

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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

0.99
100
1.01
99

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Electronic Devices and Circuits
At room temperature the current in an intrinsic semiconductor is due to

Ions
Holes and electrons
Electrons
Holes

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Electronic Devices and Circuits
An electron in the conduction band

Has lower energy than the electron in the valence band
Has higher energy than the electron in the valence band
Jumps to the top of the crystal
Loses its charge easily

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