GATE ECE 2004 | GATE ECE Year Wise Previous Years Questions

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GATE ECE 2004

MCQ (Single Correct Answer)

-0.6

Voltage series feedback (also called series-shunt feedback) results in

increase in both input and output impedances.

decrease in both input and output impedances.

increase in both input impedances and decrease in output impedances.

decrease in input impedances and increase in output impedance.

GATE ECE 2004

MCQ (Single Correct Answer)

-0.6

In the op-amp circuit given in the figure, the load current i_L is GATE ECE 2004 Analog Circuits - Operational Amplifier Question 42 English

$$ - {{{V_s}} \over {{R_2}}}$$

$$ {{{V_s}} \over {{R_2}}}$$

$${{{V_s}} \over {{R_L}}}$$

$${{{V_s}} \over {{R_1}}}$$

GATE ECE 2004

MCQ (Single Correct Answer)

-0.3

An AM signal is detected using an envelope detector. The carrier frequency and modulating signal frequency are 1 MHz and 2 KHz respectively. An appropriate value for the time constant of the envelope detector is

500 µsec

20 µsec

0.2 µsec

1 µsec

GATE ECE 2004

MCQ (Single Correct Answer)

-0.3

An AM signal and a narrow-band FM signal with identical carriers, modulating signals and modulation indices of 0.1 are added together. The resultant signal can be closely approximated by

broadband FM

SSB with carrier

DSB-SC

SSB without carrier

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2023