Test: Electromagnetics - 2

# Test: Electromagnetics - 2

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## 20 Questions MCQ Test GATE ECE (Electronics) 2023 Mock Test Series | Test: Electromagnetics - 2

Test: Electromagnetics - 2 for Electronics and Communication Engineering (ECE) 2023 is part of GATE ECE (Electronics) 2023 Mock Test Series preparation. The Test: Electromagnetics - 2 questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Electromagnetics - 2 MCQs are made for Electronics and Communication Engineering (ECE) 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Electromagnetics - 2 below.
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Test: Electromagnetics - 2 - Question 1

### The locus of the resistance 50 Q such that Zo=50Ω for a constructing a smith chart is

Detailed Solution for Test: Electromagnetics - 2 - Question 1

Radius of the normalized resistance, Centre  =    Radius = 1/2 and Centre = (1/2, 0) Test: Electromagnetics - 2 - Question 2

### A distortion less transmission line hasZ0 = 50Ω,α = 10mNP/m,u = 0.167C (C = 3x 108m/s'), then R and L of transmission line are

Detailed Solution for Test: Electromagnetics - 2 - Question 2    Test: Electromagnetics - 2 - Question 3

### If PSWR is power standing wave ratio, then VSWR and PSWR corresponding to r = 0.5∠450 is

Detailed Solution for Test: Electromagnetics - 2 - Question 3 Test: Electromagnetics - 2 - Question 4

Z0 = 600Ω, VSWR = 1.5, the distance at which first maximum occurs is 20cm from the load. If the operating frequency of the transmission line is 300 MHz, then the reflection coefficient is given by

Detailed Solution for Test: Electromagnetics - 2 - Question 4 For first maximum, n = 0   Test: Electromagnetics - 2 - Question 5

For the transmission line shown below, the voltage which appears at the load  Detailed Solution for Test: Electromagnetics - 2 - Question 5 All appears at the load. Including this there will some part which is reflected back From the load we should include thisf. Test: Electromagnetics - 2 - Question 6

A transmission line having a characteristic impedance of 300fl is feeding a dipole antenna. Frequency of operation is 100 MHz and length of dipole antenna is 1.5m.

Q.

Magnitude of reflection coefficient on the line is

Detailed Solution for Test: Electromagnetics - 2 - Question 6   Test: Electromagnetics - 2 - Question 7

A transmission line having a characteristic impedance of 300fl is feeding a dipole antenna. Frequency of operation is 100 MHz and length of dipole antenna is 1.5m.

Q.

If Pout from the transmission line is 100 watts, then the power tramsmitted by the antenna is

Detailed Solution for Test: Electromagnetics - 2 - Question 7 Test: Electromagnetics - 2 - Question 8

Consider the impedance matching series Q.

The load impedance ZL is given by

Test: Electromagnetics - 2 - Question 9

Consider the impedance matching series Q.

The reflection coefficient at the load end is

Detailed Solution for Test: Electromagnetics - 2 - Question 9 Test: Electromagnetics - 2 - Question 10

A uniform plane wave is incident normally on a dielectric interface with the current reflection coefficient, current transmission, current standing wave ration (ISWR) are

Detailed Solution for Test: Electromagnetics - 2 - Question 10  Test: Electromagnetics - 2 - Question 11

Match the following Detailed Solution for Test: Electromagnetics - 2 - Question 11  If the amplitudes are equal, then it is circularly polarized otherwise elliptical polarization.

Test: Electromagnetics - 2 - Question 12

In air, a loss less transmission line of length 50 cm with L=10μH/mand C=40 pF/m is operated at 25 MHz. Its electrical path length is

Detailed Solution for Test: Electromagnetics - 2 - Question 12  Test: Electromagnetics - 2 - Question 13

A transmission line is lossless and is 25 m long. It is terminated with a load of zL =40+j30Ω at a frequency of 10 MHz. The inductance and capacitance of the line are L - 300nH/m, C = 40pF/m.

Q.

Find β

Detailed Solution for Test: Electromagnetics - 2 - Question 13  Test: Electromagnetics - 2 - Question 14

A transmission line is lossless and is 25 m long. It is terminated with a load of zL =40+j30Ω at a frequency of 10 MHz. The inductance and capacitance of the line are L - 300nH/m, C = 40pF/m.

Q.

Find the input impedance at the mid-point of the line.

Detailed Solution for Test: Electromagnetics - 2 - Question 14    Test: Electromagnetics - 2 - Question 15 then wave is said to be which one of the following,

Test: Electromagnetics - 2 - Question 16

An air filled rectangular wave guide has dimensions a = 2, b = 1 cm, the range of frequencies over which guide will operate in single mode is given by:

Detailed Solution for Test: Electromagnetics - 2 - Question 16

single mode propagation means only TE|0 mode will propagate.

Test: Electromagnetics - 2 - Question 17

For a rectangular waveguide of dimensions: a √3 × a (in cm) , if cut-off frequency of TE10 mode is 2GHz. What is the cut-off frequency for TM11 in waveguide?

Test: Electromagnetics - 2 - Question 18

If skin depth at 10 MHz for a conductor is 1/2 π meter then what is the phase velocity for this EM wave?

Detailed Solution for Test: Electromagnetics - 2 - Question 18 Test: Electromagnetics - 2 - Question 19

The potential distribution is given by V = 10y4 + 2x3. If ε0 is permittivity of free space what is charge density (ρ) at (2, 0)

Test: Electromagnetics - 2 - Question 20

A short vertical grounded antenna is required to radiate at 1 MHz. The effective height of antenna is 302 meter then value of radiation resistance (approximately) is

Detailed Solution for Test: Electromagnetics - 2 - Question 20 ## GATE ECE (Electronics) 2023 Mock Test Series

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