Electronics Engineering - Online Test
Q1. For the transfer function
The values of the constant gain term and the highest corner frequency of the Bode plot respectively are
Answer : Option A
Explaination / Solution:
Q2. 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.
Q3. The Boolean expression 
simplifies to
simplifies to
Answer : Option D
Explaination / Solution:
Q4. 
The logic function implemented by the following circuit at the terminal OUT is
Answer : Option D
Explaination / Solution:
From the figure shown below it may be easily seen upper MOSFET are shorted
and connected to Vdd thus OUT is 1 only when the node S is 0,
Since the lower MOSFETs are shorted to ground, node S is 0 only when input P
and Q are 1. This is the function of AND gate.
Q5.
A rectangular waveguide of internal dimensions (a = 4 cm and b = 3 cm) is to be operated in TE11 mode. The minimum operating frequency is
Answer : Option A
Explaination / Solution:
Q6. A fully charged mobile phone with a 12 V battery is good for a 10 minute talktime. Assume that, during the talk-time the battery delivers a constant current of 2 A and its voltage drops linearly from 12 V to 10 V as shown in the figure. How much energy does the battery deliver during this talk-time?
Answer : Option C
Explaination / Solution:
The energy delivered in 10 minutes is
Q7. Assuming that the diodes in the given circuit are ideal, the voltage V0 is
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. Consider a combination of T and D flip-flops connected as shown below. The output of the D flip-flops is connected to the input of the T flip-flop and the output of the T Flip-flop connected to the input of the D Flip-flop. 
Initially, both Q0 and Q1 are set to 1 ( before the 1st clock cycle). The outputs
Answer : Option B
Explaination / Solution:
Q9. 
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.
Q10. If a vector field 
is related to another vector field 
through 
which of the following is true? (Note : C and SC refer to any closed contour and any surface whose boundary is C . )
is related to another vector field through which of the following is true? (Note : C and SC refer to any closed contour and any surface whose boundary is C . )
Answer : Option B
Explaination / Solution:
Hence (B) is correct option.
