Quiz: Electrical Engineering 25 June 2021

Quiz Electrical Engineering
Exam: GATE
Topic: Miscellaneous
Date: 25/06/2021

Each Question carries 2 Mark
Negative Marking: 1/3
Time: 20 Minutes

Q1. In the figure given below the value of R is

(a) 2.5 Ω
(b) 5.0 Ω
(c) 7.5 Ω
(d) 10.0 Ω

Q2. The RMS value of the voltage V(t) = 3 + 4 cos (3t) is
(a) √17 V
(b) 5 V
(c) 7 V
(d) (3+2√2)V

Q4. In the figure given, for the initial capacitor voltage is zero. The switch is closed at t = 0. The final steady – state voltage across the capacitor is

(a) 20 V
(b) 10 V
(c) 5 V
(d) 0 V

Q5. If E is the electric intensity, ∇(∇× E ) is equal to
(a) E
(b) |E |
(c) null vector
(d) Zero

Q6. A transformer has a core loss of 64 W and copper loss of 121 W, when it is carrying 10 % overload current. The load at which this transformer will operate at the maximum efficiency……
(a) 120 %
(b) 80 %
(c) 44 %
(d) 66 %

Q7. A smaller air gap in induction motor helps to
(a) Reduce the chance of cogging
(b) Reduce the magnetizing current
(c) Reduce the chance of crawling
(d) Increase the starting torque

Q8. A full-pitched coil in a 6-pole machine has a mechanical span of
(a) 30⁰
(b) 90⁰
(c) 60⁰
(d) 180⁰

Q10. Assertion (A): Shunt of an ammeter has a low resistance.
Reason (R): Shunt may be connected in series or parallel with ammeter.
(a) Both A and R are true and R is correct explanation of A
(b) Both A and R are true, but R is not correct explanation of A.
(c) A is true, R is false
(d) A is false, R is true

SOLUTIONS

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