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Electronic Devices and Circuits

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

Zero or reverse bias
Reverse bias
Forward bias
Zero bias

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

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

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Electronic Devices and Circuits
The depletion layer width of Junction

Increases with heavy doping
Is increased under reverse bias
Is independent of applied voltage
Decreases with light doping

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Electronic Devices and Circuits
Power diodes are generally

Silicon diodes
Either of the above
Germanium diodes
None of these

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Electronic Devices and Circuits
Permalloy is

A polymer
A conon-ferrous alloy used in aircraft industry
A nickel an iron alloy having high permeability
A variety of stainless steel

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

False
True

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