Jog your memory with these basic Multiple choice Electrical Engineering Questions.

Choose correct or the best alternative in the following:

Q.1 The “Superposition theorem” is essentially based on the concept of
 (A) duality. (B) linearity.
 (C) reciprocity. (D) non-linearity.

 Ans: B

Q.2 Cells are connected in parallel in order to
(A) increase the voltage available. (B) reduce cost of wiring.
(C) increase the current available. (D) reduce the time required to fully
 charge them after use.
 Ans: C

Q.3 The power factor of a purely resistive circuit is
 (A) zero. (B) unity.
(C) lagging. (D) leading.

 Ans: B

Q.4 The power taken by a 3-phase load is given by the expression
 (A) V 3 L I L cos φ . (B) V 3 L I L cos φ .
(C) V 3 L I L sin φ . (D) V 3 L I L sin φ .

 Ans: B

Q.5 Which of the following generating stations has the minimum running cost?
 (A) hydro-electric station. (B) nuclear power station.
(C) thermal power station. (D) diesel power plant.

 Ans: A