In forward bias the width of potential barrier_____________?
In forward bias the width of potential barrier_____________?
A. Increases
B. Decreases
C. Remains same
D. No effect
Physics Mcqs
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In a half-wave rectifier the r.m.s. value of the A.C. component of the wave is________________?
In a half-wave rectifier the r.m.s. value of the A.C. component of the wave is________________?A. Equal to D.C. value
B. More than D.C. value
C. Less than D.C. value
D. Zero -
To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?
To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?A. 2
B. 3
C. 4
D. 5 -
The working of transistor as amplifier is similar to________________?
The working of transistor as amplifier is similar to________________?A. Step up transformer
B. Step down transformer
C. Three diodes in common
D. Triode vacuum tube -
An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?
An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?A. Non-inverting voltage at output
B. Reference voltage on the other
C. Virtual input
D. Output -
Non-inverting amplifier circuits have____________?
Non-inverting amplifier circuits have____________?A. A very high input impedance
B. A very low input impedance
C. A low output impedance
D. None of the above -
The operation of a transistor requires______________?
The operation of a transistor requires______________?A. That the emitter be heated
B. That the base be heated
C. That the collector be heated
D. None of the above -
To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is_____________?
To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is_____________?A. 2
B. 3
C. 4
D. 5 -
The operational amplifier is______________?
The operational amplifier is______________?A. A high gain amplifier
B. A high-power amplifier
C. A high resistance amplifier
D. A low resistance amplifier -
The alternating voltage is an example of_______________?
The alternating voltage is an example of_______________?A. A digital waveform
B. An analogue waveform
C. Discrete waveform
D. None at all