# Test: Communication-2

## 25 Questions MCQ Test Basic Electronics Engineering for SSC JE (Technical) | Test: Communication-2

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Attempt Test: Communication-2 | 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
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QUESTION: 2

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QUESTION: 3

### Which one of the technique involves signal composed of light beams ?

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QUESTION: 4

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QUESTION: 5

The Nyquist sampling interval, for the signal sinc (700 t) + sinc (500 t) is

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QUESTION: 6

In case of data transmission, which one of the following system will give maximum probabilityof error ?

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QUESTION: 7

Frequency shift keying is used mostly in

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QUESTION: 8

PAM signal can be demodulated by using

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QUESTION: 9

Modems are used for data transmission intelephone lines to

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QUESTION: 10

Capacity of a channel is given by

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QUESTION: 11

The channel capacity of a noiseless channel is equal to

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QUESTION: 12

The noise at the input to an ideal frequencydetector is white. Detector is operating above threshold. Power spectral density of noise atoutput is

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QUESTION: 13

The capacity of an analog communicationchannel, with 4 kHz bandwidth and 15 is valueof SNR, is

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QUESTION: 14

Noise has greatest effect in a communicationsystem when it interfere with signal.

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QUESTION: 15

Power spectral density of white noise

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QUESTION: 16

A system has a receiver noise resistance of 50W.It is connected to an antenna with an input resistance of 50W. The noise figure of the system is

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QUESTION: 17

Which one of the following types of noise gains importance at high frequency

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QUESTION: 18

Noise voltage in a resistor is relates as

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QUESTION: 19

Most usefull approach to radar system formonitoring the speed of moving vehicle is

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QUESTION: 20

Which one of the following circuits transmits twomessage simultaneously in one direction

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QUESTION: 21

The most probable bandwidth of a transponderin a satelite communication system is

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QUESTION: 22

The blind speed of an MTI radar can be avoidedby changing the

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QUESTION: 23

Order of wavelength for satelite communicationis

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QUESTION: 24