GATE 2019: Signal & System Quiz 1

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Question 1

Which of the following is correct about the signal ?

• AIt is periodic with period (π/70)
• BIt is periodic with period (3π/35)
• CIt is periodic with period (18π/35)
• DIt is non-periodic signal

Question 2

A continuous –time system is described by y(t)=e^-|x(t)|, where y (t) is the output and x(t) is the input, y(t) is bounded

• AOnly when x(t) is bounded
• BOnly when x(t) is non-negative
• COnly for t≥0 if x(t) is bounded for t≥0
• DEven when x(t) is not bounded

Question 3

A current impulse, 5δ (t), is forced through a capacitor C. The voltage, V_c(t), across the capacitor is given by

• A5t
• B5u(t) ‒ C
• C
• D

Question 4

The energy of the signal is_______.

• A1.20
• B2
• C0.25
• D2.23

Question 5

Which of the following condition holds good for a Power signal?

• AP = finite; E = ∞
• BP = finite; E = 0
• CP = ∞; E = ∞
• DP = 0; E = finite

Question 6

Which of the following signals represents unit ramp signal?

• A
• B
• C
• D

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