A. junction capacitance
B. charge storage capacitance
C. depletion capacitance
D. channel length modulation
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Thermal runaway is not possible in FET because as the temperature of FET increases_________________?
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A change in the value of the emitter resistance Re in a differential amplifier?
A. the mobility decreases
B. the transconductance increases
C. the drain current increases
D. none of the above
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In a p-n junction diode under reverse bias , the magnitude of electric field is maximum at_____________?
A. affects the difference mode gain Ad
B. affects the common mode gain Ac
C.affects both Ad and Ac
D. does not effect either Ad and Ac
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A constant current signal across a parallel RLC circuits gives an o/p of 1.4v at the signal frequency of 3.89KHZ and 4.1KHZ .At the frequency of 4KHZ,the o/p voltage will be___________?
A. the edge of the depletion region on the p-side
B. the edge of the depletion region on the n-side
C. the p-n junction
D. the center of the depletion region on the n-side
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The bandwidth of an RF tuned amplifier is dependent on____________?
A. 1 v
B. 2v
C. 1.4v
D. 2.8v
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Most of the linear ICs are based on the two-transistor differential amplifier because of its___________?
A. Q –factor of the tuned o/p circuit
B. Q –factor of the tuned i/p circuit
C. Quiescent operating point
D. Q-factor of the o/p and i/p circuits as well as quiescent operating point
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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_____________?
A. input voltage dependent linear transfer characteristic
B. high voltage gain
C. high input resistance
D. high CMRR
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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. 5 Ω & 20 %
B. 25 Ω & 20 %
C. 5 Ω & 16.7 %
D. 25 Ω & 16.7 %
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In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db &2db respectively, then its common mode rejection ratio is__________?
A. 50 KHz
B. 100KHz
C. 1000/17 KHz
D. 1000/7.07 KHz