Electrical Engineering - Online Test
Q1. If C is code curve enclosing a surface S , then magnetic field intensity 
, the
current density 
and the electric flux density 
are related by
, the
current density and the electric flux density are related by
Answer : Option D
Explaination / Solution:
Q2. For the Op-Amp circuit shown in the figure, V is
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. Two 4-array signal constellations are shown. It is given that φ1 and φ2 constitute an orthonormal basis for the two constellation. Assume that the four symbols in both the constellations are equiprobable. Let N0/2 denote the power spectral density of white Gaussian noise.
If these constellations are used for digital communications over an AWGN channel, then which of the following statements is true ?
Answer : Option A
Explaination / Solution:
No Explaination.
Q4.
The measured trans conductance gm of an NMOS transistor operating in the linear region is plotted against the gate voltage VG at a constant drain voltage VD. Which of the following figures represents the expected dependence of gm on VG ?
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. In the circuit shown, the three voltmeter readings are V1 = 220 V , V2 = 122 V, V3 = 136 V .
If RL = 5Ω , the approximate power consumption in the load is
Answer : Option B
Explaination / Solution:
Q6. A wattmeter is connected as shown in the figure. The wattmeter reads
Answer : Option D
Explaination / Solution:
No Explaination.
Q7. 
Assuming zero initial condition, the response y(t) of the system given below to a unit step input u(t) is
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. The impulse response of a continuous time system is given by h(t) = δ(t - 1) + δ(t - 3). The value of the step response at t = 2 is
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. 
evaluated anticlockwise around the circle |z - i| = 2, where i = √-1, is
evaluated anticlockwise around the circle |z - i| = 2, where i = √-1, is
Answer : Option A
Explaination / Solution:
No Explaination.
Q10. For a power system network with n nodes, Z33 of its bus impedance matrix is j0.5 per unit. The
voltage at node 3 is 1.3 ∠–10° per unit. If a capacitor having reactance of –j3.5 per unit is now
added to the network between node 3 and the reference node, the current drawn by the capacitor per
unit is
Answer : Option D
Explaination / Solution:
No Explaination.
