WorksheetsSignal Processing Quiz
Total questions: 20
Worksheet time: 10mins
Which of the following is an example of a periodic signal?
impulse
Exponential decay
Step function
Sine wave
A signal is said to be even if:
x(t) = x(-t)
x(t) = -x(-t)
x(t) = x(t+1)
x(t) = x(t-1)
Energy signals have:
Finite energy and zero power
Infinite energy
Finite power
Both energy and power finite
Which signal is non-causal?
x(t) = u(t)
x(t) = u(-t)
x(t) = δ(t)
x(t) = 0 for t<0
Which of the following signals is used to represent an instantaneous event?
Impulse
Step
Ramp
Sine
Which of the following is a discontinuous signal?
Ramp
Unit step
Sinusoidal
Exponential
Time shifting means:
Shifting signal along time axis
Inverting amplitude
Scaling time
Adding noise
Time scaling with factor <1 causes:
Inversion
Compression
Expansion
Shifting
Amplitude scaling affects the:
Height of signal
Time duration
Frequency
Phase
Orthogonal functions have:
Zero inner product
Same magnitude
Same phase
Non-zero inner product
Fourier series uses:
Only cosine
Random signals
Orthogonal sinusoids
Only exponential
The approximation improves as:
Number of terms increases
Signal decreases
Noise increases
Sampling increases
The trigonometric Fourier series uses:
Sine and Cosine
Exponentials
Only sine
Only cosine
Which coefficient represents average value in FS?
a₀
aₙ
bₙ
cₙ
Fourier spectrum represents:
Frequency content
Time duration
Amplitude decay
Signal energy
Which signal has a Fourier Transform of a sinc function?
Rectangular pulse
Impulse
Exponential
Step
Which function has FT as delta function?
Cosine
Sine
Impulse
Constant
Time shifting in FT domain causes:
Phase shift
Amplitude change
Frequency change
Time compression
Scaling in time causes:
Inversion in frequency
Time shifting
Phase reversal
Amplitude decrease
Convolution in time is equivalent to:
Multiplication in frequency
Addition in frequency
Integration in time
Differentiation in time
