Electrical Engineering - Online Test
Q1. 
The open loop transfer function G(s) of a unity feedback control system is given as
From the root locus, it can be inferred that when k tends to positive infinity,
Answer : Option A
Explaination / Solution:
Q2. The two vectors [1,1,1] and [1, a, a2], where a = 
, are
, are
Answer : Option B
Explaination / Solution:
Dot product of two vectors = 1 + a + a2 = 0
So orthogonal
Q3. A three –phase 440V, 6 pole, 50Hz, squirrel cage induction motor is running at a slip of 5%. The speed of stator magnetic field to rotor magnetic field and speed of rotor with respect to stator magnetic field are
Answer : Option A
Explaination / Solution:
Q4. A capacitor is made with a polymeric dielectric having an εr of 2.26 and a
dielectric breakdown strength of 50kV/cm. The permittivity of free space is
8.85pF/m. If the rectangular plates of the capacitor have a width of 20cm and a
length of 40cm, then the maximum electric charge in the capacitor is
Answer : Option C
Explaination / Solution:
Q5. A clipper circuit is shown below.
Assuming forward voltage drops of the diodes to be 0.7V, the input-output transfer characteristics of the circuit is
Answer : Option C
Explaination / Solution:
Q6. 
Two generator units G1 and G2 are connected by 15 kV line with a bus at the mid-point as shown below.
G1 = 250 MVA, 15kV, positive sequence reactance X = 25% on its own base
G2 = 100 MVA, 15kV, positive sequence reactance X = 10 % on its own base
L1 and L2 = 10km, positive sequence reactance X = 0.225 Ω / km
For the above system, the positive sequence diagram
with the p.u values on the MVA common base is
Answer : Option A
Explaination / Solution:
Q7. The simplified SOP (Sum of Product) form of the Boolean expression
is
is
Answer : Option B
Explaination / Solution:
Q8. In the sum of products function f (X, Y, Z) = ∑(2, 3, 4, 5), the prime implicants are
Answer : Option A
Explaination / Solution:
Q9. In the circuit shown below, the current through the inductor is
Answer : Option C
Explaination / Solution:
Q10. In the circuit shown below the op-amps are ideal. Then Vout in Volts is
Answer : Option C
Explaination / Solution:
No Explaination.
