Electrical Engineering MCQs

Page No. 132

The emitter of a transistor is___________doped?


alightly


bheavily


cmoderately


d none of the above


View Answer heavily

A zener diode is used as ______________?


aan amplifier


ba voltage regulator


ca rectifier


da multivibrator


View Answer a voltage regulator

The knee voltage of a crystal diode is approximately equal to ________________?


aapplied voltage


bbreakdown voltage


cforward voltage


dbarrier potential


View Answer barrier potential

When the crystal current diode current is large, the bias is ______________?


aforward


bInverse


cpoor


dreverse


View Answer forward

If the temperature of a crystal diode increases, then leakage current ______________?


a remains the same


bdecreases


cincreases


dbecomes zero


View Answer increases

If the doping level of a crystal diode is increased, the breakdown voltage__________________?


aremains the same


b is increased


c is decreased


dnone of the above


View Answer is decreased

The ratio of reverse resistance and forward resistance of a germanium crystal diode is about ______________?


a1 : 1


b100 : 1


c1000 : 1


d40,000 : 1


View Answer 40,000 : 1

A crystal diode has forward resistance of the order of ________________?


a


bΩ


c


dnone of the above


View Answer Ω

A crystal diode is used as______________?


aan amplifier


ba rectifier


can oscillator


da voltage regulator


View Answer a rectifier

If the arrow of crystal diode symbol is positive w.r.t. bar, then diode is _____________biased?


a forward


b reverse


ceither forward or reverse


dnone of the above


View Answer forward

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