ISRO EC 2018:Signal & System Booster Quiz 1

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Question 1

If x(t) = δ(2t/3), what will be its amplitude at t = 0?

• A1
• Binfinite
• C3/2
• D0

Question 2

Which of the following signal is obtained on integrating ramp signal?

• AStep signal
• BGate signal
• CParabolic signal
• DExponential signal

Question 3

If a signal x(t) depends on the past and present values of the signal alone, then it is said to be :

• ANon – anticipatory
• BCausal
• CBoth (A) and (B)
• DNone of the above

Question 4

Which of the following options best describes the system y (n) = x (n) - 4 x (n-1) based on memory and time variance or invariance?

• ATime variant, static system
• BTime invariant, static system
• CTime variant, dynamic system
• DTime invariant, dynamic system

Question 5

Find the number of samples in the fundamental period of the signal x (n) = e ^j11πn/3

• A2 samples
• B10 samples
• C6 samples
• DThe signal is aperiodic.

Question 6

The response of a system at zero initial conditions and non-zero input is called ________.

• AZero state response
• BZero input response
• CTotal response
• DNone of the above

Question 7

A continuous time system has input and output x (t) and y (t) respectively. The system is defined by its input output relation y (t) = x (t²). The system is

• ACausal, linear, and time varying
• BCausal, non-linear and time-varying
• CNon-causal, non-linear and time-variant
• DNon-causal, linear and time-variant

Question 8

The energy of the signal is_______.

• A1.20
• B2
• C0.25
• D2.23

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