Electrical Engineering MCQs

Page No. 126

The dimensions of hie parameter are _______________?


aMho


bOhm


cFarad


dNone of the above


View Answer Ohm

There are ______________ h parameters of a transistor?


aTwo


bFour


cThree


dNone of the above


View Answer Four

A transistor behaves as a linear device for _____________?


aSmall signals only


bLarge signals only


cBoth small and large signals


dNone of the above


View Answer Small signals only

The h parameter approach gives correct results for_______________?


aLarge signals only


bSmall signals only


cBoth small and large signals


dNone of the above


View Answer Small signals only

Hybrid means_____________?


aMixed


b Single


cUnique


d None of the above


View Answer Mixed

In order to determine hfe and hie parameters of a transistor, __________ is an a.c. short-circuited?


aInput


bOutput


cInput as well as output


dNone of the above


View Answer Output

In CE arrangement, the value of input impedance is approximately equal to ______________?


aHie


bHoe


c Hre


d None of the above


View Answer Hie

A 741-type OP-AMP has a gain-bandwidth product of 1MHz. A non-inverting amplifier using this op-amp & having a voltage gain of 20db will exhibit -3db bandwidth of__________?


a 50 KHz


b100KHz


c1000/17 KHz


d1000/7.07 KHz


View Answer 100KHz

A dc power supply has no-load voltage of 30v,and a full-load voltage of 25v at full-load current of 1A.Its output resistance & load regulation ,respectively are_____________?


a5 Ω & 20 %


b25 Ω & 20 %


c5 Ω & 16.7 %


d25 Ω & 16.7 %


View Answer 25 Ω & 20 %

Most of the linear ICs are based on the two-transistor differential amplifier because of its___________?


aInput voltage dependent linear transfer characteristic


b high voltage gain


chigh input resistance


dhigh CMRR


View Answer high CMRR

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