# Test: Communication System- 1

## 25 Questions MCQ Test Basic Electronics Engineering for SSC JE (Technical) | Test: Communication System- 1

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Attempt Test: Communication System- 1 | 25 questions in 50 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study Basic Electronics Engineering for SSC JE (Technical) for Electrical Engineering (EE) Exam | Download free PDF with solutions
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### A ship- to-ship communications system is plagued by fading. The best solution seems to be the use of

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QUESTION: 4

In electromagnetic waves, polarization

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QUESTION: 5

As electromagnetic waves travel in free space, only one of the following can happen to them :

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QUESTION: 6

Electromagnetic waves are refracted when they

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QUESTION: 7

Diffraction of electromagnetic waves

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QUESTION: 8

When microwave signals follow the curvature of the earth, this is known as

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QUESTION: 9

One of the following consists of no resonant antennas:

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QUESTION: 10

Which one of the following terms does not apply to the Yagi-Uda array ?

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QUESTION: 11

An antenna that is circularly polarized is the

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QUESTION: 12

Top loading is sometimes used with an antenna in order to increase its

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QUESTION: 13

Cassegrain feed is used with a parabolic reflector to

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QUESTION: 14

A helical antenna is used for satellite tracking because of its

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QUESTION: 15

A helical antenna is used for satellite tracking because of its

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QUESTION: 16

When electromagnetic waves are propagated in a waveguide

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QUESTION: 17

The wavelength of a wave in a waveguide

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QUESTION: 18

When a particular mode is excited in a waveguide, there appears an extra electric component, in the direction of propagation. The resulting mode is

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QUESTION: 19

When electromagnetic waves are reflected at an angle from a wall, their wave-length along the wall is

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QUESTION: 20

As a result of reflections from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater greater than the velocity of light in space. This is called the

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QUESTION: 21

A signal propagated in a waveguide has a full wave of electric intensity change between the two further walls, and no component of the electric field in the direction of propagation. The mode is

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QUESTION: 22

In order to couple two generator to a waveguide system without coupling them to each other, one could not use a

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QUESTION: 23

A directional coupler with three or more holes is sometimes used in preference to the two-hole coupler

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QUESTION: 24

A ferrite is

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QUESTION: 25

A PIN diode is

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