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GATE 2020: Toppers Quiz-1 (App update required to attempt this test)

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Question 1

A communication channel of bandwidth 35 kHz is required to transmit binary data at a rate of 0.05 Mbps using raised-cosine pulses. The roll off factor α is __________.

Question 2

The current mirror circuit acts as a _________.

Question 3

Armstrong FM transmitter performs frequency multiplication in stages

Question 4

A 4-bit R-2R DAC has reference of 5 V. What is the analog output for the input 1010.

Question 5

In the figure shown below

The amplifier have an input resistance of 50Ω and must provide a gain of 10. The value of R_D for amplifier is

Question 6

Given a vector field

If the vector field is solenoidal, then the value of k will be

Question 7

An air filled rectangular wave guide is operating at 6 GHz with dominant propagating inside it. If the wavelength inside the wave guide is 6cm, then the wave impedance of the mode is given by ______ $Description: E:\Gate\Gate-EC\04_Elctromgntic_BL-done_files\image035.png$ .

Question 8

A (6,3) code is generated according to the given generator matrix. The receiver received a code ‘100011’. Determine the correctly transmitted word if maximum likelihood criterion is used.

Question 9

For the K-map shown in the figure the minimized function in SOP form is :-

Question 10

A Silicon photodiode has a dark current of 1.2 nA and is being used as a detector under reverse bias of 2 V. the photodiode has a responsivity of 0.6 A/W. The photodiode is illuminated under optical power level of 2 μW with photons having energy 1.4*10^-19 Joules. What is the photocurrent generated(in nA) ?

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ESE & GATE EC General

Oct 28ESE & GATE EC