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Electronic Devices and Circuits

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

Forward bias
Zero or reverse bias
Reverse bias
Zero bias

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

PIN diode
Schottky diode
Zener diode
Tunnel diode

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Electronic Devices and Circuits
Power diodes are generally

Either of the above
Germanium diodes
None of these
Silicon diodes

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

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

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Electronic Devices and Circuits
Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

Antiparallel to magnetic field
In arbitrary direction
Normal to both current and magnetic field
In the direction of current

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

Holes and electrons
Holes
Electrons
Ions

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