GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 848 - 852 of 1076

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Question 848

Appeared in Year: 2017



The Nyquist plot of the transfer function

does not encircle the point for but does not encircle the point for Then the closed loop system (having unity gain feedback) is


Choice (4)Response


Unstable for and unstable for


Stable for and unstable for


Unstable for and stable for


Stable for and stable for

Question 849

Appeared in Year: 2015


Numeric Answer▾

Consider the bode plot shown in figure. Assume that all the poles and zeros are really valued.

Consider the Bode Plot Shown in Figure

The value of is …

Question 850

Appeared in Year: 2016


Numeric Answer▾

In the following integral, the contour C encloses the point and .

The value of the integral is …

Question 851

Discrete-Time Fourier Transform (DTFT), DFT, FFT

Appeared in Year: 2016


Numeric Answer▾

The Discrete Fourier Transform (DFT) of the point sequence

If is the DFT of the 12-point sequence the value of is …

Question 852

Appeared in Year: 2016


Numeric Answer▾

An op-amp has a finite open loop voltage gain of . Its input offset voltage is modelled as shown in the circuit below. The amplifier is ideal in all other respects. is .

The Amplifier is Ideal in All Other Respects

The output voltage is …

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