Mobile Computing and Wireless Communication (2170710) MCQs

MCQs of Introduction of Transmission Fundamentals

Showing 11 to 18 out of 18 Questions
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11.

Equation for periodic signal is______

(a)

s(t+T)=s(T),-∞<t<+∞
(b)

s(t-T)=s(t),-∞<t<+∞
(c)

s(t+T)=s(t),-∞<t<+∞
(d)

s(t+T)=s(t)+s(T),-∞<t<+∞
Answer:

Option (c)

12.

Which noise generates when one wire affects the other wire?

(a)

Induced noise
(b)

Crosstalk noise
(c)

Thermal noise
(d)

Impulse noise
Answer:

Option (b)

13.

Noise from sources such as motors and appliances is known as ______

(a)

Induced noise
(b)

Crosstalk noise
(c)

Thermal noise
(d)

Impulse noise
Answer:

Option (a)

14.

Noise from movement of electrons in wire which creates an extra signal is known as _____

(a)

Induced noise
(b)

Crosstalk noise
(c)

Thermal noise
(d)

Impulse noise
Answer:

Option (c)

15.

Noise from the signal with high energy that comes from lightning or power lines  is known as _____

(a)

Induced noise
(b)

Crosstalk noise
(c)

Thermal noise
(d)

Impulse noise
Answer:

Option (d)

16.

Nyquist formula for binary signal is_____

(a)

C = 2B
(b)

C = B2
(c)

C = 2M
(d)

C = 2B log2 M
Answer:

Option (a)

17.

Formula for Signal to Noise ratio is______

(a)

SNRdB = 10 log2(SNR) 
(b)

SNRdB =  log10(SNR) 
(c)

SNRdB = 10 log10(SNR) 
(d)

SNRdB = 10*SNR
Answer:

Option (c)

18.

Nyquist formula for multilevel signal is_____

(a)

C = 2B log10 M
(b)

C = 2B log2 M
(c)

C = B log2 M
(d)

C = 2M log2 B
Answer:

Option (b)

Showing 11 to 18 out of 18 Questions
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