A differential amplifier is invariably used in the i/p stage of all OP-amps. This is done basically to provide the OP-amps with a very high_________?
(A) CMMR
(B) Bandwidth
(C) Slew rate
(D) Open-loop gain
An OPAMP has a slew rate of 5 V/μ S .The largest sine wave O/P voltage possible at a frequency of 1 MHZ is [Hint: Slew rate is defined as the max. rate of change of output voltage. Its unit is V/μS.
(A) 10 volts
(B) 5 volts
(C) 5/1 volts
(D) 5/2 volts
A source follower using an FET usually has a voltage gain which is___________?
(A) greater than +100
(B) slightly less than unity but positive
(C) exactly unity but negative
(D) about -10
The early effect in a bipolar junction transistor is caused by_______________?
(A) fast turn-on
(B) fast turn-off
(C) large collector-base reverse bias
(D) large emitter-base forward bias
In a common emitter, unbypassed resister provides___________?
(A) voltage shunt feedback
(B) current series feedback
(C) negative voltage feedback
(D) positive current feedback
MOSFET can be used as a__________?
(A) current controlled capacitor
(B) voltage controlled capacitor
(C) current controlled inductor
(D) voltage controlled inductors
Which of the following amplifier circuit using junction transistor has the best gain?
(A) Common base
(B) Common emitter
(C) Common collector
(D) All have the same gain
The horizontal intercept of dc load line is the same as ideal____________?
(A) cut off point
(B) saturation point
(C) operating point
(D) quasi saturation point
Introducing a resistor in the emitter of a common amplifier stabilizes the dc operating point against variations in____________?
(A) Only the temperature
(B) only the β of the transistor
(C) Both Temperature & β
(D) None of the above