Signals and Systems - Online Test
Q1. A voltage 1000sinωt Volts is applied across YZ. Assuming ideal diodes, the voltage measured
across WX in Volts is 
Answer : Option D
Explaination / Solution:
No Explaination.
Q2. For linear time invariant systems, that are Bounded Input Bounded stable, which one of the following statement is TRUE?
Answer : Option B
Explaination / Solution:
No Explaination.
Q3. Consider a signal defined by
Its Fourier Transform is
Answer : Option A
Explaination / Solution:
Q4. Three capacitors C1, C2, and C3, whose values are 10µF, 5µF, and 2µF respectively, have
breakdown voltages of 10V, 5V, and 2V respectively. For the interconnection shown, the maximum
safe voltage in Volts that can be applied across the combination and the corresponding total charge
in µC stored in the effective capacitance across the terminals are respectively
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. The following discrete-time equations result from the numerical integration of the differential equations of an un-damped simple harmonic oscillator with state variables x and y. The integration time step is h.
For this discrete-time system, which one of the following statements is TRUE?
Answer : Option A
Explaination / Solution:
No Explaination.
Q6. 
In the circuit shown below, if the source voltage Vs = 100∠53.13° V then the Thevenin’s equivalent
voltage in Volts as seen by the load resistance RL is
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. A function y(t), such that y(0) = 1 and y(1) = 3e-1, is a solution of the differential equation 
Then y(2) is
Then y(2) is
Answer : Option B
Explaination / Solution:
Q8. In the circuit shown below, the knee current of the ideal Zener diode is 10 mA. To maintain 5 V
across RL, the minimum value of RL in Ω and the minimum power rating of the Zener diode in mW
respectively are
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. The value of the integral
over the contour |z| = 1, taken in the anti-clockwise direction, would be
Answer : Option B
Explaination / Solution:
Q10. The switch SW shown in the circuit is kept at position ‘1’ for a long duration.
At
t
= 0+, the switch is moved to position ‘2’. Assuming |Vo2| > |Vo1|, the voltage vc(t) across the capacitor is
Answer : Option D
Explaination / Solution:
