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Signals-and-systems Questions Set 31:

Quiz Mode

Is the system h(t) = e^(-jwt) stable?

Yes

Can't say

None of the above

Solution:

What is the even component of the signal X(t) = e^jt?

sinh(t)

sin(t)

cos(t)

cosh(t)

Solution:

What is the Laplace transform of (sin 3t)/t?

π/2

- tan^-1 s/3

tan^-1 s/3

π/2 - tan^-1 s/3

Solution:

Which of the following is the process of ‘aliasing’?

Peaks overlapping

Phase overlapping

Amplitude overlapping

Spectral overlapping

Solution:

Mixing is used in communication to ________

raise the carrier frequency

lower the carrier frequency

alter the deviation

change the carrier frequency to any required value

Solution:

For a band pass signal with a frequency range from 1 KHz to 2 KHz, the minimum sampling frequency required to retain all information of the sampled signal is:

4 KHz

3 KHz

2 KHz

1 KHz

Solution:

For the given signal, choose the option that holds TRUE.

x(t) = 2 cos(πt) + 3 sin(2t)

x(t) is periodic

x(t) is not periodic

x(t) may be periodic or non-periodic

x(t) neither periodic nor non-periodic

Solution:

If the bandwidth is increased by 2, the ratio of SNR of output to SNR at input (γ) for frequency modulation (FM) divided by the ratio of SNR of output to SNR at input (γ) for amplitude modulation (AM) is increased by a factor of:

Solution:

Given the signals:

x1(t) = 2 sin(π t) + cos(4π t)

x2(t) = 2 sin(5π t) + 3 sin(3π t)

Determine which of the following statements is correct:

x1 and x2 both are periodic

x1 and x2 both are not periodic

x1 is periodic, but x2 is not periodic

x1 is not periodic, but x2 is periodic

Solution:

A direct sequence spread binary phase-shift-keying system uses a feedback shift register of length 19 for the generation of PN sequence. The system is required to have an average probability of symbol error due to externally generated interfering signals that does not exceed 10^-5. The Antijam margin is

47.5 dB

93.8 dB

86.9 dB

12.6 dB

Signals-and-systems Questions Set 31:

Is the system h(t) = e^(-jwt) stable?

Solution:

What is the even component of the signal X(t) = e^jt?

Solution:

What is the Laplace transform of (sin 3t)/t?

Solution:

Which of the following is the process of ‘aliasing’?

Solution:

Mixing is used in communication to ________

Solution:

For a band pass signal with a frequency range from 1 KHz to 2 KHz, the minimum sampling frequency required to retain all information of the sampled signal is:

Solution:

For the given signal, choose the option that holds TRUE.

x(t) = 2 cos(πt) + 3 sin(2t)

Solution:

If the bandwidth is increased by 2, the ratio of SNR of output to SNR at input (γ) for frequency modulation (FM) divided by the ratio of SNR of output to SNR at input (γ) for amplitude modulation (AM) is increased by a factor of:

Solution:

Given the signals:

x1(t) = 2 sin(π t) + cos(4π t)

x2(t) = 2 sin(5π t) + 3 sin(3π t)

Determine which of the following statements is correct:

Solution:

Solution:

Related Question Sets:

Related Topics:

Signals-and-systems Questions Set 31:

Is the system h(t) = e^(-jwt) stable?

Solution:

What is the even component of the signal X(t) = ejt?

Solution:

What is the Laplace transform of (sin 3t)/t?

Solution:

Which of the following is the process of ‘aliasing’?

Solution:

Mixing is used in communication to ________

Solution:

For a band pass signal with a frequency range from 1 KHz to 2 KHz, the minimum sampling frequency required to retain all information of the sampled signal is:

Solution:

For the given signal, choose the option that holds TRUE. x(t) = 2 cos(πt) + 3 sin(2t)

Solution:

If the bandwidth is increased by 2, the ratio of SNR of output to SNR at input (γ) for frequency modulation (FM) divided by the ratio of SNR of output to SNR at input (γ) for amplitude modulation (AM) is increased by a factor of:

Solution:

Given the signals: x1(t) = 2 sin(π t) + cos(4π t) x2(t) = 2 sin(5π t) + 3 sin(3π t) Determine which of the following statements is correct:

Solution:

Solution:

Related Question Sets:

Related Topics:

What is the even component of the signal X(t) = e^jt?

For the given signal, choose the option that holds TRUE.

x(t) = 2 cos(πt) + 3 sin(2t)

Given the signals:

x1(t) = 2 sin(π t) + cos(4π t)

x2(t) = 2 sin(5π t) + 3 sin(3π t)

Determine which of the following statements is correct: