MCQ
Papers
Previous Year Paper
Exam
Quiz
Tournament
Test Series
Login/Sign Up
MCQ
BASIC ELECTRONICS
CONTROL SYSTEM ENGINEERING
DIGITAL ELECTRONICS
ELECTRICAL CIRCUIT ANALYSIS
ELECTRICAL ENERGY CONSERVATION AND AUDITING
ELECTRICAL ENGINEERING MATERIALS
ELECTRICAL MACHINES
ELECTRICAL WIRING
ELECTROMAGNETICS
MEASUREMENT & INSTRUMENTATION
MICROPROCESSOR AND MICROCONTROLLER INTERFACING
POWER ELECTRONICS & DRIVES
POWER SYSTEM
SIGNALS & SYSTEMS
UTILIZATION OF ELECTRICAL ENERGY
SIGNALS & SYSTEMS
Q1.
A minimum phase digital filter has all of its zeros
Outside unit circle
Inside the unit circle
Either inside the unit circle or outside the unit circle
On the unit circle.
Show Answer
Solution
Q2.
The Fourier transform of a DC signal \(x(t) = A\) is
\(A2\pi \delta(\omega)\)
\(A \omega\)
\(A 2\pi \omega\)
\(A 2\pi \)
Show Answer
Solution
Q3.
What is the condition for sampling theorem to be true? \(\omega_s=\) sampling frequency, \(\omega_m =\) highest frequency in the input
\(\omega_s > 2\omega_m\)
\(\omega_s < 2\omega_m\)
\(\omega_s = 2\omega_m\)
\(\omega_s > \omega_m\)
Show Answer
Solution
Q4.
The Fourier transform of signal \(\delta(t+1)+\delta(t-1)\) is
\(\frac{2}{1+j\omega}\)
\(\frac{2}{1-j\omega}\)
\(2 \cos (\omega)\)
None of above
Show Answer
Solution
Q5.
Which theorem states that the total average power of a periodic signal is equal to the sum of average powers of the individual Fourier coefficients?
Parseval's theorem
Rayleigh theorem
Both (a) and (b)
None
Show Answer
Solution
Q6.
The z-transform of a signal is given by \(X\left( z \right) = \frac{1}{4}\:\frac{{{z^{ - 1}}\left( {1 - {z^{ - 4}}} \right)}}{{{{\left( {1 - {z^{ - 1}}} \right)}^2}}}\) , its final value is
\(\frac{1}{4}\)
0
1
\(\infty\)
Show Answer
Solution
Q7.
The signal u(t-3) is
Non-causal
Causal
Anti causal
None of the above
Show Answer
Solution
Q8.
Which among the following are the stable discrete time systems?
1. \(y(n) = x(4n)\)
2. \(y(n) = ax(n) -9\)
3. \(y(n)=x(-\frac{n}{2})\)
4. \(y(n) = \sin \left \{ x(n)\right \}\)
1, 3 & 4
1 & 3
2 & 4
1, 2, 3 & 4
Show Answer
Solution
Q9.
\(Sinc(x)\) function is defined as
\( x \sin(x)\)
\( \frac{\sin(\pi x)}{\pi x}\)
\( x \cos(x)\)
None of the above
Show Answer
Solution
Q10.
What is the energy of a power signal
Finite
Zero
Infinite
Between 1 & 2
Show Answer
Solution
1
2
3
Next Page
Last ›
Hello Qualexians...
Login to access detailed solutions and many more exam preparation activities at Qualexe.