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GATE Subject Revision Quiz

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Question 1

In the circuit shown, choose the correct timing diagram of the output (y) from the given waveforms W1, W2, W3 and W4

Question 2

When a p-n junction is formed it gives rise to formation of a built-in voltage at the junction. If it is given that the difference in the energy level of the conduction band at the p and n side is 1.12 eV then the built-in potential is ________ V. Given N_A = 10¹⁶ cm^-3, n_i = 1.6 x 10¹⁵ cm^-3, ϵ₀ = 8.85 x 10^-12 F/m, q = 1.6 x 10^-19 C}

Question 3

In the circuit shown below, the power dissipated in 10-ohm resistors is _______ W.

Question 4

The response of the system

to the unit step input

the value of

at t=0⁺is

Question 5

In the circuit using an ideal opamp, the 3-dB cut-off frequency (in Hz) is __________.
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Question 6

The feedback used in the circuit shown below can be classified as
2019-11-10.png (1920×1080)

Question 7

An RC filter is being used for a certain operation in a medium inflicted by white noise with N/2 as 2*10^-6 W/Hz. Where R = 1 kΩ and C = 1 μF. Determine the power(in μW) obtained due to noisy input at 500 Hz frequency at the output of this Filter

Question 8

The bit stream 110111001 is to be transmitted using DPSK. The reference bit is ‘1’. The transmitted phase sequence is

Question 9

Find the output expression of the combinational circuit given below i.e. Y(A,B)=_________. Where A is the MSB (Most Significant Bit).

Question 10

consider a unity feedback system whose open loop transfer function

The value of K that results in phase margin of 45^o_______

Question 11

The input impedance of lossless λ/8 transmission line with other end short circuited is given by ______. (Assume characteristic impedance Z_o = 50Ω)

Question 12

The radiation intensity of a given antenna is U = 2(sinθ sinφ) in the range 0 ≤ θ ≤ π and 0 ≤ φ ≤ π and 0 elsewhere. The direction is

Question 13

Consider a random variable ‘x’ having pdf given by

, otherwise

If random variable ‘y’ is generated such that . The value of is _______.

Question 14

An air-filled rectangular waveguide of internal dimensions a cm × b cm(a > b) has a cutoff frequency of 6 GHz for the dominant TE₁₀ mode. For the same waveguide, if the cutoff frequency of the TM₁₁ mode is 15 GHz, the cutoff frequency of the TE₀₁ mode in GHz is ___________.

Question 15Multiple Correct Options

A rectangular cross-section conductor has length to cross-sectional area ratio of

m^-1. A current of 10mA produces a voltage drop of 200mV across the length. Given that

cm²/V-sec

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ESE & GATE EC General

Nov 3ESE & GATE EC