Electrical Engineering MCQs

Page No. 130

A 10 V power supply would use ____________ as filter capacitor?


apaper capacitor


bmica capacitor


c electrolytic capacitor


dair capacitor



In a npn transistor,_____________are the minority carriers?


a free electrons


bholes


cdonor ions


d acceptor ions


View Answer holes

The input impedance of a transistor is___________?


ahigh


blow


cvery high


dalmost zero


View Answer low

The value of a of a transistor is_____________?


amore than 1


b less than 1


c1


dnone of the above


View Answer less than 1

____________ rectifier has the lowest forward resistance?


a solid state


b vacuum tube


cgas tube


dnone of the above


View Answer solid state

In a tansistor, IC = 100 mA and IE = 100.2 mA. The value of ß is____________?


a100


b50


cabout 1


d200


View Answer 200

A zener diode is destroyed if it______________?


ais forward biased


bis reverse biased


ccarrier more than rated current


d none of the above



The relation between ß and a is______________?


aß = (1 – a ) / a


bß = 1 / (1 – a )


cß = a / (1 – a )


dß = a / (1 + a )


View Answer ß = a / (1 – a )

The doping level in a zener diode is______________ that of a crystal diode?


athe same as


bless than


cmore than


dnone of the above


View Answer more than

The phase difference between the input and output voltages in a common base arrangement is___________?


a 180o


b90o


c 270o


d0o


View Answer 0o

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