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Electronic Devices and Circuits

Electronic Devices and Circuits
In a bipolar transistor, the emitter base junction has

Reverse bias
Zero bias
Forward bias
Zero or reverse bias

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

Holes
Electrons
Ions
Holes and electrons

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Electronic Devices and Circuits
Which of the following has highest resistivity?

Air
Paraffin wax
Mica
Mineral oil

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

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

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Electronic Devices and Circuits
In the sale of diamonds the unit of weight is carat. One carat is equal to

200 mg
500 mg
100 mg
150 mg

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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

100
0.99
1.01
99

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