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Test: Communication-1 - Electrical Engineering (EE) MCQ


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25 Questions MCQ Test - Test: Communication-1

Test: Communication-1 for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Test: Communication-1 questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Communication-1 MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Communication-1 below.
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Test: Communication-1 - Question 1

In a 100% modulated signal, If the total transmitted power is P, then carrier power will be

Test: Communication-1 - Question 2

For an AM wave having a power of 800 W to its carrier freqency and modulation index of 90%,the power cantent of each side bond is

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Test: Communication-1 - Question 3

For coherent detection of digital signals, the receiver must be synchronised in

Test: Communication-1 - Question 4

Quadrature multiplexing uses

Test: Communication-1 - Question 5

Test: Communication-1 - Question 6

Saving in power in DSB-SC system modulated at 80% is (in comparison with AM)

Test: Communication-1 - Question 7

An amplifier has a power gain of 200. What is its gain in dB (log 102 = 0.3)

Test: Communication-1 - Question 8

A DSB-SC signal is generated using the carrier cos (wct  ) and modulating signal x(t). The envelope of DSB -SC signal is

Test: Communication-1 - Question 9

The waveform A cos (w1t + k cos w2t) is

Test: Communication-1 - Question 10

The typical squelch circuit

Test: Communication-1 - Question 11

In FM radio broadcasting system, the maximum frequency deviation is usually

Test: Communication-1 - Question 12

An FM signal with modulation index mf is passed through a frequency tripler, the modulation index of output signal will be

Test: Communication-1 - Question 13

An angle modulated signal is expressed by Fa(t)= cos (2 × 108 t + 75 sin 2 × 103 t). The peak frequency deviation of carrier is the

Test: Communication-1 - Question 14

If we add the amplitude modulated signal and narrow band FM signal with same modulation index, than resultant signal will be

Test: Communication-1 - Question 15

Which of the following modulation are used for telecasting TV programme

1. AM

2. FM

3. Pulse modulation

4. Phase modulation

Test: Communication-1 - Question 16

Band width requirement for commercial FM radio broad cast is

Test: Communication-1 - Question 17

In PCM system if the quantisation level are increased from 2 to 8, the relative bandwidth will be

Test: Communication-1 - Question 18

The signal to quantisation noise ratio in an n-bit PCM system

Test: Communication-1 - Question 19

In a delta modulation scheme, the step height is 75 mV and step size is 1.5 ms. The maximum slope that the staircase can track is

Test: Communication-1 - Question 20

Quantisation noise occurs in

Test: Communication-1 - Question 21

In case a signal band limited to fm is sampled at a rate less than 2fm, the constructed signal will be

Test: Communication-1 - Question 22

In PCM if transmission path is very long

Test: Communication-1 - Question 23

In a delta modulation system, granular noise occurs when the

Test: Communication-1 - Question 24

Compander is used for

Test: Communication-1 - Question 25

For 10 bit PCM system, the signal to quantiration noise ratio is 62 dB. If the number of bits are increased by 2, then signal to noise ratio will

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