Communication System Test

Result

Communication System Test - 33

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Weekly Quiz Competition

Question 1
4 / -1

In an amplitude modulated wave for audio frequency of 500 cycle/second, the appropriate carrier frequency will be

A
50 cycles/s

B
100 cycles/s

C
500 cycles/s

D
50,000 cycles/s
Question 2
4 / -1

Range of frequencies allotted for commercial FM radio broadcast is

A
88 to 108 MHz

B
88 to 108 kHz

C
8 to 88 MHz

D
88 to 108 GHz
Question 3
4 / -1

The velocity factor of a transmission line is x. If dielectric constant of the medium is 2.6, value of x is

A
0.26

B
0.62

C
2.6

D
6.2

Solution
Question 4
4 / -1

The process of superimposing signal frequency (i. e., audio wave) on the carrier wave is known as

A
Transmission

B
Reception

C
Modulation

D
Detection

Solution
Question 5
4 / -1

Long distance short-wave radio broadcasting uses

A
Ground wave

B
Ionospheric wave

C
Direct wave

D
Sky wave
Question 6
4 / -1

The characteristics impedance of a coaxial cable of the order of

A
50 Ω

B
200 Ω

C
27 Ω

D
None of these
Question 7
4 / -1

In which frequency range, space waves are normally propagated

A
HF

B
VHF

C
UHF

D
SHF
Question 8
4 / -1

Through which mode of propagation, the radio waves can be sent from one place to another

A
Ground wave propagation

B
Sky wave propagation

C
Space wave propagation

D
All of the above
Question 9
4 / -1

A laser beam of pulse power 10¹² watt is focused on an object of area 10^–4 cm². The energy flux in watt/cm²at the point of focus is

A
10²⁰

B
10¹⁶

C
10⁸

D
10⁴

Solution
Question 10
4 / -1

The carrier frequency generated by a tank circuit containing 1nF capacitor and 10 µH inductor is

A
1592 Hz

B
1592 MHz

C
1592 kHz

D
159.2 Hz

Solution

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Re-Attempt Weekly Quiz Competition

Communication System Test - 33

Result

Communication System Test - 33

Score

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Rank

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SHARING IS CARING

Question 1

50 cycles/s

100 cycles/s

500 cycles/s

50,000 cycles/s

Question 2

88 to 108 MHz

88 to 108 kHz

8 to 88 MHz

88 to 108 GHz

Question 3

0.26

0.62

2.6

6.2

Solution

Question 4

Transmission

Reception

Modulation

Detection

Solution

Question 5

Ground wave

Ionospheric wave

Direct wave

Sky wave

Question 6

50 Ω

200 Ω

27 Ω

None of these

Question 7

HF

VHF

UHF

SHF

Question 8

Ground wave propagation

Sky wave propagation

Space wave propagation

All of the above

Question 9

1020

1016

108

104

Solution

Question 10

1592 Hz

1592 MHz

1592 kHz

159.2 Hz

Solution

User

Question Analysis

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