# GATE 2021: Toppers Mini Mock Quiz 2 (App update required to attempt this test)

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Question 1

Question 2

Question 3

The value of is?

Question 4

_{D1}vs V

_{s}.

Question 5

If there is no bit error and no inter symbol interference, what will be the number of quantizing steps needed?

Question 6

Question 7

^{5}+ s

^{4}+ 2s

^{3}+ 2s

^{2}+ 3s + 15, the number of roots which lie in the right half of the s-plane is

Question 8

^{+}P junction solar cell has a surface area of 1 cm

^{2}and acceptor concentration N

_{a}= 10

^{15}cm

^{–3}in the base region. Assume diffusion coefficient of electrons D

_{n}= 35 cm

^{2}sec

^{–1}, carrier lifetime of electrons, t

_{n}= 2.57 μsec, and electron–hole pair generation rate (G

_{L}= 2.7 × 10

^{19}cm

^{–3}sec

^{–1}). Then the open circuit voltage (V

_{OC}) of the solar cell is ________ V.

(Assume V_{T} = 26 mV, n_{i} = 1.5 × 10^{10} cm^{–3} neglect the contribution of n^{+} region and depletion region).

Question 9

_{CBO}= 0.5 mA, common base current gain = 0.98 and emitter current I

_{E}= 2mA . Then the trans conductance of the transistor is _______ m.

(Assume V_{T} = 26 mV and ղ= 1)

Question 10

3V

_{1}- I

_{1}+ 4I

_{2}= 0

4I

_{1}+ 2I

_{2}- 6V

_{1}= 5V

_{2}The y - parameter y

_{21}will be ___________.

Question 11

The maximum power that can be transferred to a variable load R

_{L}is _______ W.

Question 12

Question 13

ADC (5 – bit) and frequency of clock = 5 MHz

Question 14

Question 15

Question 16

_{D}will be

Question 17

If the maximum and minimum value of its envelope is given by 9.5 and 4.2 respectively then the value of is __________.

Question 18

**Direction:**A communication channel of bandwidth 100 kHz is to be used for transmission of an analog source m(t), where | m(t)| < 1. The bandwidth of message signal is W = 4 kHz and power content of the message signal is 0.1 W.

The ratio of the output SNR of an FM system that utilizes the whole bandwidth, to the output SNR of an conventional AM system with a modulation index of 0.85 is

Question 19

**Direction:**A communication channel of bandwidth 100 kHz is to be used for transmission of an analog source m(t), where | m(t)| < 1. The bandwidth of message signal is W = 4 kHz and power content of the message signal is 0.1 W.

Question 20

If the vector field is solenoidal, then the value of k^{2}+5 will be

Question 21

The amount of work necessary by the field to move a 2.5 μC charge from (2, 1, 1) to (5, 1, 2) is ______.(Choosing path (2, 1, –1) to (5, 1, –1) to (5, 1, 2)

Question 22

Question 23

The value of magnitude of current I is

Question 24

Question 25

_{x}is ……………………

Question 26

is evaluated around in the anti-clockwise direction is:

Question 27

^{-5}H/m, ϵ = 4 ×10

^{-9}F/m, σ =0 and ρ

_{V}= 0. Find K so that D = 6a

_{x}– 2a

_{y}+ 2za

_{z}nC/m

^{2}and H = kxa

_{x}– 10ya

_{y}- 25 za

_{z}A/m satisfies Maxwell’s equations.

Question 28

Question 29

A steady state error due to step input is:

Question 30

Find the steady state error due to unit step input is ______?

Question 31

_{0}(t), for only, that is x(t) and x

_{0}(t) are not given for t < 0

The complete odd part x_{0}(t) of the signal will be

Question 32

_{0}(t), for only, that is x(t) and x

_{0}(t) are not given for t < 0

_{e}(t) of the signal x(t) is.

Question 33

Question 34

Question 35

The words that best fill the blanks in the above sentence are

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