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Previous year question hub

Signals and LTI Systems - Signals and Systems - Electrical Engineering Previous Year Questions

Practice Signals and LTI Systems - Signals and Systems - Electrical Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

25Papers
18Years
123Questions
1Topics

Signals and LTI Systems question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Signals and LTI Systems. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 65 52.8%
Medium 57 46.3%
Hard 1 0.8%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 110 89.4%
Numerical Answer Type (NAT) 12 9.8%
MSQ 1 0.8%

Subject weightage

Top subjects by unique question coverage.

Electrical Engineering
123 Qs

Most asked topics

Top topics across the included previous year papers.

Signals and Systems
123 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Signals and LTI Systems
123 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

Electrical Engineering (EE) 2025
4 Qs
Electrical Engineering (EE) 2024
4 Qs
Electrical Engineering (EE) 2023
6 Qs
Electrical Engineering (EE) 2022
5 Qs
Electrical Engineering (EE) 2021
3 Qs
Electrical Engineering (EE) 2020
5 Qs
Electrical Engineering (EE) 2019
4 Qs
Electrical Engineering (EE) 2018
3 Qs
Electrical Engineering (EE) 2017 [Session 1]
5 Qs
Electrical Engineering (EE) 2017 [Session 2]
2 Qs
Electrical Engineering (EE) 2016 [Session 2]
5 Qs
Electrical Engineering (EE) 2016 [Session 1]
4 Qs
Electrical Engineering (EE) 2014 [Session 1]
5 Qs
Electrical Engineering (EE) 2014 [Session 2]
5 Qs
Electrical Engineering (EE) 2014 [Session 3]
4 Qs
Electrical Engineering (EE) 2013 [Session 2]
9 Qs
Electrical Engineering (EE) 2013 [Session 3]
7 Qs
Electrical Engineering (EE) 2013 [Session 4]
7 Qs
Electrical Engineering (EE) 2013 [Session 1]
6 Qs
Electrical Engineering (EE) 2012
3 Qs
Electrical Engineering (EE) 2011
4 Qs
Electrical Engineering (EE) 2010
5 Qs
Electrical Engineering (EE) 2009
3 Qs
Electrical Engineering (EE) 2008
8 Qs
Electrical Engineering (EE) 2007
7 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Electrical Engineering (EE) 202520254View paper
Electrical Engineering (EE) 202420244View paper
Electrical Engineering (EE) 202320236View paper
Electrical Engineering (EE) 202220225View paper
Electrical Engineering (EE) 202120213View paper
Electrical Engineering (EE) 202020205View paper
Electrical Engineering (EE) 201920194View paper
Electrical Engineering (EE) 201820183View paper
Electrical Engineering (EE) 2017 [Session 1]20175View paper
Electrical Engineering (EE) 2017 [Session 2]20172View paper
Electrical Engineering (EE) 2016 [Session 1]20164View paper
Electrical Engineering (EE) 2016 [Session 2]20165View paper
Electrical Engineering (EE) 2014 [Session 1]20145View paper
Electrical Engineering (EE) 2014 [Session 2]20145View paper
Electrical Engineering (EE) 2014 [Session 3]20144View paper
Electrical Engineering (EE) 2013 [Session 1]20136View paper
Electrical Engineering (EE) 2013 [Session 2]20139View paper
Electrical Engineering (EE) 2013 [Session 3]20137View paper
Electrical Engineering (EE) 2013 [Session 4]20137View paper
Electrical Engineering (EE) 201220123View paper
Electrical Engineering (EE) 201120114View paper
Electrical Engineering (EE) 201020105View paper
Electrical Engineering (EE) 200920093View paper
Electrical Engineering (EE) 200820088View paper
Electrical Engineering (EE) 200720077View paper

All Signals and LTI Systems previous year questions

Practice every matching question in batches of 20, with every available option.

1
2007 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2007
Let a signal \(a_1 \sin(\omega_1 t + \phi_1)\) be applied to a stable linear time-invariant system. Let the corresponding steady state output be represented as \(a_2 F(\omega_1 t + \phi_2)\). Then which of the following statements is true?
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2
2007 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2007
A signal x(t) is given by
x(t) = 1, - T/4 < t ≤ 3T/4
x(t) = -1, 3T/4 < t ≤ 7T/4
x(t) = -x(t+T)

Which among the following gives the fundamental Fourier term of x(t)?
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3
2007 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2007
If u(t), r(t) denote the unit step and unit ramp functions respectively and u(t)*r(t) their convolution, then the function u(t+1)*r(t-2) is given by
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4
2007 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2007
X(z) = 1 - 3z-1, Y(z) = 1 + 2z-2 are Z-transforms of two signals x[n], y[n] respectively. A linear time invariant system has the impulse response h[n] defined by these two signals as h[n] = x[n-1]*y[n] where * denotes discrete time convolution. Then the output of the system for the input δ[n-1]
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5
2007 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2007
If the above step response is to be observed on a non-storage CRO, then it would be best to have the \(e_i\) as a
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6
2007 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2007
A signal is processed by a causal filter with transfer function \(G(s)\). For a distortion free output signal waveform, \(G(s)\) must
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7
2007 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2007
\(G(z) = \alpha z^{-1} + \beta z^{-3}\) is a low-pass digital filter with a phase characteristics same as that of the above question if
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8
2008 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2008
A signal $e^{-\alpha t} \sin(\omega t)$ is the input to a real Linear Time Invariant system. Given $K$ and $\phi$ are constants, the output of the system will be of the form $K e^{-\beta t} \sin(\nu t + \phi)$ where
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9
2008 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2008
A function $y(t)$ satisfies the following differential equation: $\frac{dy(t)}{dt} + y(t) = \delta(t)$ where $\delta(t)$ is the delta function. Assuming zero initial condition, and denoting the unit step function by $u(t)$, $y(t)$ can be of the form
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10
2008 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2008
The impulse response of a causal linear time-invariant system is given as h(t). Now consider the following two statements: Statement (I): Principle of superposition holds. Statement (II): h(t) = 0 for t < 0. Which one of the following statements is correct?
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11
2008 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2008
Given a sequence x[n], to generate the sequence y[n] = x[3-4n], which one of the following procedures would be correct?
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12
2008 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2008
A system with input x(t) and output y(t) is defined by the input-output relation: y(t) = ∫_{-∞}^{2t} x(τ) dτ. The system will be
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13
2008 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2008
A signal x(t) = sinc(αt) where α is a real constant (sinc(x) = sin(πx)/(πx)) is the input to a Linear Time Invariant system whose impulse response h(t) = sinc(βt) where β is a real constant. If min(α,β) denotes the minimum of α and β, and similarly max(α,β) denotes the maximum of α and β, and K is a constant, which one of the following statements is true about the output of the system?
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14
2008 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2008
Let x(t) be a periodic signal with time period T. Let y(t) = x(t-t0) + x(t+t0) for some t0. The Fourier Series coefficients of y(t) are denoted by bk. If bk = 0 for all odd k, then t0 can be equal to
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15
2008 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2008
\( H(z) \) is a transfer function of a real system. When a signal \( x[n] = (1 + j)^n \) is the input to such a system, the output is zero. Further, the Region Of Convergence (ROC) of \( \left( 1 - \frac{1}{2} z^{-1} \right) H(z) \) is the entire Z-plane (except \( z = 0 \)). It can then be inferred that \( H(z) \) can have a minimum of
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16
2009 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2009
A Linear Time Invariant system with an impulse response \(h(t)\) produces output \(y(t)\) when input \(x(t)\) is applied. When the input \(x(t-\tau)\) is applied to a system with impulse response \(h(t-\tau)\), the output will be
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17
2009 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2009

A cascade of 3 Linear Time Invariant systems is causal and unstable. From this, we conclude that

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18
2009 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2009
The Fourier Series coefficients, of a periodic signal \( x(t) \), expressed as \( x(t) = \sum_{k=-\infty}^{\infty} a_k e^{j 2 \pi k t / T} \) are given by \( a_{-2} = 2 - j1; a_{-1} = 0.5 + j0.2; a_0 = j2; a_1 = 0.5 - j0.2; a_2 = 2 + j1; \) and \( a_k = 0; \) for \( |k| > 2 \). Which of the following is true?
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19
2010 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2010
The period of the signal \( x(t) = 8 \sin \left( 0.8\pi t + \frac{\pi}{4} \right) \) is
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20
2010 · Electrical Engineering · Signals and Systems · Signals and LTI Systems
Electrical Engineering (EE) 2010
The system represented by the input-output relationship \( y(t) = \int_{-\infty}^{5t} x(\tau) d\tau, t > 0 \) is
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Showing 20 of 113 questions