EASY
NEET
IMPORTANT
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Forbidden energy gap of Ge is 0.75 eV, maximum wave length of incident radiation of photon for producing electron - hole pair in germanium semiconductor is :-
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Important Questions on Semiconductor Devices
MEDIUM
NEET
IMPORTANT
In the circuit given the current through the zener diode is :-
EASY
NEET
IMPORTANT
A full wave rectifier circuit along with the input and output voltage is shown in the figure then output due to diode D2 is :-
MEDIUM
NEET
IMPORTANT
If a full-wave rectifier circuit is operating in mains, the fundamental frequency in the ripple will be
EASY
NEET
IMPORTANT
The electrical circuits used to get smooth DC output from a rectified circuit is called _____.
EASY
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IMPORTANT
When two semiconductors of and -type are brought into contact, they form a - junction which act like
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IMPORTANT
In p-n junction photocell electromotive force due to monochromatic light is proportional to
HARD
NEET
IMPORTANT
Efficiency of a half wave rectifier is nearly :-
EASY
NEET
IMPORTANT
A transistor is used in the common emitter mode as an amplifier. Then -
A. The base-emitter junction is forward biased
B. The base-emitter junction is reverse biased
C. The input signal is connected in series with the voltage applied to bias the base emitter junction
D. The input signal is connected in series with the voltage applied to bias the base collector junction
Correct options are-
