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Electronic Devices and Circuits

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

Reverse bias
Zero or reverse bias
Zero bias
Forward bias

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

Mica
Paraffin wax
Mineral oil
Air

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Electronic Devices and Circuits
An electron in the conduction band

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

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Electronic Devices and Circuits
In a half wave rectifier, the load current flows

For full cycle
Only for the positive half cycle of the input signal
For less than fourth cycle
Only for the negative half cycle of the input signal

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

500 mg
150 mg
200 mg
100 mg

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Electronic Devices and Circuits
For a P-N diode, the number of minority carriers crossing the junction depends on

Rate of thermal generation of electron hole pairs
None of these
Forward bias voltage
Potential barrier

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