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Electronic Devices and Circuits
Which of the following has highest resistivity?
Paraffin wax
Air
Mica
Mineral oil
Paraffin wax
Air
Mica
Mineral oil
Answer
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Electronic Devices and Circuits
The sensitivity of human eyes is maximum at
Violet portion of spectrum
Red portion of spectrum
White portion of spectrum
Green portion of spectrum
Violet portion of spectrum
Red portion of spectrum
White portion of spectrum
Green portion of spectrum
Answer
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Electronic Devices and Circuits
Fermi level is the amount of energy in which
An electron can have at room temperature
None of these
Must be given to an electron move to conduction band
A hole can have at room temperature
An electron can have at room temperature
None of these
Must be given to an electron move to conduction band
A hole can have at room temperature
Answer
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Electronic Devices and Circuits
Assertion (A): A JFET can be used as a current source.Reason (R): In beyond pinch off region the current in JFET is nearly constant.
A is true but R is false
Both A and R are true but R is not a correct explanation of A
A is false but R is true
Both A and R are true and R is correct explanation of A
A is true but R is false
Both A and R are true but R is not a correct explanation of A
A is false but R is true
Both A and R are true and R is correct explanation of A
Answer
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Electronic Devices and Circuits
In which of these is reverse recovery time nearly zero?
Schottky diode
Zener diode
Tunnel diode
PIN diode
Schottky diode
Zener diode
Tunnel diode
PIN diode
Answer
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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
1.01
99
100
0.99
1.01
99
100
Answer
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