Communication System Test

Result

Communication System Test - 13

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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

The relation between the maximum electron denisity N max and the critical frequency f for the ionosphere can be given as

A

B

C

D
None of these
Question 2
4 / -1

In order to cover a circular region of radios 128 km, by a TV transmitter, What must be the height of the transmitting antenna ?

A
79 m

B
1050 m

C
1280 m

D
1560 m
Question 3
4 / -1

The frequency of carries wave emitted from L - C oscillator of 10 H inductance and 1 nF capacitor is ___________

A
1592 KHz

B
1592 Hz

C
1592 MHz

D
159.2 Hz
Question 4
4 / -1

A

B

C

D
Question 5
4 / -1

A transmitter transmit a power of 10 kw when modulation is 50%. What is the power of carrier wave ?

A
12 KW

B
7.0 KW

C
8.89 KW

D
5.0 KW
Question 6
4 / -1

A T.V. tower has a height 200 m. By how much the height of tower be increased to triple its coverage range ?

A
1600 m

B
800 m

C
1800 m

D
600 m
Question 7
4 / -1

A
2 MHz

B
10 MHz

C
12 MHz

D
18 MHz
Question 8
4 / -1

What is the frequency range of signals that can be transmitted in care of twisted pair of wires ?

A
5 MHz to 20 MHz

B
5 MHz to 10 MHz

C
100 Hz to 4 MHz

D
5 MHz to 20 MHz
Question 9
4 / -1

What type of medium is used in optical communication ?

A
Guided medium

B
Unguided medium

C
Both guided and unguided media

D
Neither guided nor unguided media
Question 10
4 / -1

A
9 MHz

B
6 MHz

C
3 MHz

D
3 GHz