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Analog Electronics

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_____________?

August 11, 2021December 19, 2018 by admin
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. 5 Ω & 20 %
B. 25 Ω & 20 %
C. 5 Ω & 16.7 %
D. 25 Ω & 16.7 %

Categories Analog Electronics

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

August 11, 2021December 19, 2018 by admin
Most of the linear ICs are based on the two-transistor differential amplifier because of its___________?

A. input voltage dependent linear transfer characteristic
B. high voltage gain
C. high input resistance
D. high CMRR

Categories Analog Electronics

The bandwidth of an RF tuned amplifier is dependent on____________?

August 11, 2021December 19, 2018 by admin
The bandwidth of an RF tuned amplifier is dependent on____________?

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

Categories Analog Electronics

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___________?

August 11, 2021December 19, 2018 by admin
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. 1 v
B. 2v
C. 1.4v
D. 2.8v

Categories Analog Electronics

In a p-n junction diode under reverse bias , the magnitude of electric field is maximum at_____________?

August 11, 2021December 19, 2018 by admin
In a p-n junction diode under reverse bias , the magnitude of electric field is maximum at_____________?

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

Categories Analog Electronics

A change in the value of the emitter resistance Re in a differential amplifier?

August 11, 2021December 19, 2018 by admin
A change in the value of the emitter resistance Re in a differential amplifier?

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

Categories Analog Electronics

Thermal runaway is not possible in FET because as the temperature of FET increases_________________?

August 11, 2021December 19, 2018 by admin
Thermal runaway is not possible in FET because as the temperature of FET increases_________________?

A. the mobility decreases
B. the transconductance increases
C. the drain current increases
D. none of the above

Categories Analog Electronics

Which of the following is not associated with a p-n junction?

August 11, 2021December 19, 2018 by admin
Which of the following is not associated with a p-n junction?

A. junction capacitance
B. charge storage capacitance
C. depletion capacitance
D. channel length modulation

Categories Analog Electronics
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