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.Management Sciences
Category: Electronics
The device or circuit used for conversion of A.C. into D.C. is called_______________?
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A. An amplifier.
B. A rectifier
C. Filtering circuit
D. Converter.
In p-n-p transistor the collector current is________________?
A. equal to emitter current
B. slightly less than emitter current
C. greater than emitter current
D. any of above
In half-wave rectification the output D.C. voltages is obtained across the load for_______________?
A. The negative half cycle of A.C.
B. The positive half cycle of A.C.
C. The positive and negative half cycles
D. Either positive or negative half of A.C.
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
The velocity of an oscillating charge as it moves to and fro along a wire is always_____________?
A. constant
B. zero
C. changing
D. infinite
In the transistor schematic symbol, the arrow______________?
A. is located on the emitter
B. is located on the base
C. is locate on the collector
D. points form north to south
Which one of the following has the greatest energy gap ?
A. insulator
B. conductor
C. semi conductor
D. any of above
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