GATE ECE 1989 | GATE ECE Year Wise Previous Years Questions

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GATE ECE 1989

MCQ (Single Correct Answer)

-0.6

The feedback amplifier shown in Fig.has: GATE ECE 1989 Analog Circuits - Feedback Amplifier Question 1 English

current - series feedback with large input impedance and large output impedance.

voltage - series feedback with large input impedance and low output impedance.

voltage - shunt feedback with low input impedance and low output impedance.

current - shunt feedback with low input impedance and output impedance.

GATE ECE 1989

MCQ (Single Correct Answer)

-0.6

Refer to Fig. GATE ECE 1989 Analog Circuits - Operational Amplifier Question 18 English

For $${V_i} > 0,\,\,{V_0}\, = - {{{R_2}} \over {{R_1}}}{V_i}$$

For $${V_i} > 0,\,\,{V_0}\, = 0.$$

For $${V_i} < 0,\,\,{V_0}\, = - {{{R_2}} \over {{R_1}}}{V_i}$$

For $${V_i} < 0,\,\,{V_0}\, = 0.$$

GATE ECE 1989

MCQ (More than One Correct Answer)

-0.6

In binary data transmission DPSK is preferred to PSK because

a coherent carrier is not required to be generated at the receiver.

for a given energy per bit, the probability of error is less.

the 180⁰ phase shifts of the carrier are unimportant.

more protection is provided against impulse noise.

GATE ECE 1989

Subjective

+10

-0

A signal of bandwidth 3.5 kHz has peak-to-peak and rms amplitudes of 4 V and 0.2 V, respectively. This signal is passed through a linear PCM coder and then transmitted over a channel capable of supporting a transmission rate of 60 kbps. Calculate the maximum signal-to-quantization-noise ratio that can be obtained using this system.

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