Electrical Engineering Mcqs — Test 78
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Question 1
Which of the following amplifier circuit using junction transistor has the best gain?
Question 2
MOSFET can be used as a__________?
Question 3
A differential amplifier has a differential gain of 20,000 . CMRR=80 dB. The common mode gain is given by________?
Question 4
In a common emitter, unbypassed resister provides___________?
Question 5
. If =0.98 ,Ico=6µA and Iβ=100µA for a transistor,then the value of Ic will be______?
Question 6
The MOSFET switch in its on-state may be considered equivalent to_____________?
Question 7
An npn BJT has gm=38mA/v, cµ =10¯14 F, cπ =10¯13F and DC current gain β0=90.For this transistor fT & fβ are________?
Question 8
An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed________?
Question 9
Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250 ,are cascaded.The open circuit voltage gain of combined amplifier is_________?
Question 10
The cascade amplifier is a multistage configuration of__________?