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WorksheetsBPHC 0002 Quiz 1
Total questions: 10
Worksheet time: 5mins
The maximum efficiency of full wave rectification is
40.6% .
100% c
81.2%
85.6%
A zener diode is used as ……………
rectifier
voltage regulator
filter
none
A LED emits visible white light when its
junction is reversed biased
depletion layer widens
holes and electrons recombine
junction becomes hot
Which among these is NOT the property of a semiconductor?
Four electrons in the valence band forming covalent bonds
At 0 Kelvin semiconductor acts like an insulator
Semiconductors have two type of charge carriers
Semiconductors are temperature insensitive
Fermi level of intrinsic semiconductor lies
Middle of band gap
Close to conduction band
Close to valence band
None of the above
Heating a extrinsic semiconductor results
Intrinsic semiconductor
More extrinsic
N type becomes p type and vice versa
None of the above
Which diode shows negative resistance
Tunnel diode
Zener diode
Photo diode
Any p n diode
Photo diode works on
FForward Bias
Reverse bias
Any of the bias
Depends on the temperature
The width of the depletion region increases
Reverse bias
forward bias
No biasing
Upon heating
The conductivity of semiconductor increases if
We increase the temperature
We decrease the temperature
Suddenly decrease the temperature
Not possible by varying the temperature. Only by doping, it is possible
