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Signals Systems
Signals Systems Written Test
Quiz 1
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Q.1
Given x (t) = [2 + e-3t] u (t). The final value of x(t) is ___________
a) 2
b) 3
c) e-3t
d) 0
Q.2
The Fourier series of the given signal is _______________
a) -4/π sin x
b) 4/π sin x
c) 4/π cos x
d) -4/π cos x
Q.3
For the circuit given below, the effective inductance of the circuit across the terminal AB, is ___________
a) 9 H
b) 21 H
c) 11 H
d) 6 H
Q.4
For the circuit given below, the inductance measured across the terminals 1 and 2 wasH with open terminals 3 andIt wasH when terminals 3 and 4 were short-circuited. Both the inductors are having inductances 2H. The coefficient of coupling is ______________
a) 1
b) 0.707
c) 0.5
d) Inderminate due to insufficient data
Q.5
Q meter operator is the principle of __________
a) Series resonance
b) Current resonance
c) Self-inductance
d) Eddy currents
Q.6
The probability cumulative distribution function must be monotone as well as ___________
a) Increasing
b) Decreasing
c) Non-increasing
d) Non-decreasing
Q.7
The impedance seen by the source in the circuit is given by __________
a) (0.54 + j0.313) Ω
b) (4 – j2) Ω
c) (4.54 – j1.69) Ω
d) (4 + j2) Ω
Q.8
In the circuit given below, the capacitor is initially having a charge ofC. 1 second after the switch is closed, the current in the circuit is ________
a) 14.7 A
b) 18.5 A
c) 40.0 A
d) 50.0 A
Q.9
Convolution is used to find ____________
a) Impulse of an LTI system
b) Frequency response of an LTI system
c) Time response of an LTI system
d) Phase response of an LTI system
Q.10
The Fourier transform of a rectangular function is ___________
a) Another rectangular pulse
b) Triangular pulse
c) Sinc function
d) Impulse
Q.11
The property of Fourier Transform which states that the compression in time domain is equivalent to expansion in the frequency domain is ___________
a) Duality
b) Scaling
c) Time scaling
d) Frequency shifting
Q.12
A coil of inductanceH, resistanceΩ is connected as shown in the figure. After the switch S has been in connection with point 1 for a very long time, it is moved to point 2 at t=For the value of R obtained, the time taken for% of the stored energy dissipated is close to?
a) 0.10 s
b) 0.15 s
c) 0.50 s
d) 1.0 s
Q.13
The function which has its Fourier transform, Laplace transform, and Z transform unity is __________
a) Gaussian
b) Impulse
c) Sinc
d) Pulse
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