ESE 2021 Technical Quiz || Full Revision Mock Test-2 for ESE & GATE EC Exams

Question 1

Consider a function z(x,y) be defined as

The value of

equals to

Question 2

The solution of the second order differential equation is

y=2 and

Question 3

If the reflection coefficient of a 2 port network is 0.4 then the return network loss in the network is

Question 4

Kvl is applicable to

Question 5

Determine the current i(t) in the given circuit after the switch is closed for all t > 0.

Question 6

The z – parameters of circuits are given by

them, the transmission parameters are:-

Question 7

How many inputs will a decimal-to-BCD encoder have?

Question 8

Express the output voltage of digital to analog converter?

Question 9

Find the sum of (110.1101)₂ and (11.01)₂

Question 10

A clamper circuit
1) Adds or subtracts a dc voltage to or from a waveform
2) Does not change the shape of the waveform
Which of the above statements are correct?

Question 11

The peak value of the output voltage of a half-wave rectifier is 100 V. The r.m.s. value of the half-wave rectifier output voltage will be

Question 12

Which device is suitable for higher order RF frequency multiplier/

Question 13

A unity Feedback control system has an open-loop transfer function

.
The gain K for which s = -1 + j1 will lie on the root locus of this system is:

Question 14

An AM modulator has output

The modulation efficiency is

Question 15

For a plane travelling EM wave, the-correct equation for characteristic impedance Z for the medium with permittivity of $Description: Description: Description: Description: Description: E:\GradeStack Courses\ISRO-EC-2012_files\image038.png$ and permeability of $Description: Description: Description: Description: Description: E:\GradeStack Courses\ISRO-EC-2012_files\image056.png$ is:

Question 16

Match List-I (Modes) with List-II (Characteristic) and select the correct answer using the code given below the lists:
List-I
A). Evanescent mode
B). Dominant mode
C). TM₁₀ and TM₀₁
List-II
1). Rectangular waveguide does not support
2). No wave propagation
3). Lowest cut-off frequency

Question 17

During power measurement the out power measured was –90 dBm. What is the measured power in W?

Question 18

Which of the following introduces mode partition noise?

Question 19

The ideal op-amp has

Question 20

At room temperature, a silicon photodetector can’t be used to detect which of the following wavelength