MCQ’s on Basic Electrical
If P is the power of a star-connected system then the power in the equivalent delta system is
(a) P/3
(b) P
(c) 3P
(d) None of the above
The correct answer is (c) 3P
Inductor does not allow sudden change of
(a) Voltage
(b) Current
(c) Power
(d) Resistance
The correct answer is (b) Current
Capacitor does not allow sudden change of
(a) Voltage
(b) Current
(c) Power
(d) Resistance
The correct answer is (a) Voltage
For domestic purposes, how are circuits connected?
(a) Straight
(b) Parallel
(c) Serial
(d) Series
The correct answer is (b) Parallel
The instrument which is used to detect electric current is known as?
(a) Voltmeter
(b) Rheostat
(c) Wattmeter
(d) Galvanometer
The correct answer is (d) Galvanometer
The objective of earthing or grounding is
(a) To provide as low resistance possible to the ground
(b) To provide as high resistance possible to the ground
(c) To provide flow of positive, negative and zero sequence current
(d) None of these
The correct answer is (a) To provide as low resistance possible to the ground
A closed switch has a resistance of?
(a) Zero
(b) 10 ohms
(c) 25 ohms
(d) Infinity
The correct answer is (a) Zero
Eddy current loss will depends on
(a) Frequency
(b) Flux density
(c) Thickness
(d) All of the above
The correct answer is (d) All of the above
Nichrome wire is an alloy of
(a) Lead and Zinc
(b) Chromium and Vanadium
(c) Nickel and chromium
(d) Copper and silver
The correct answer is (c) Nickel and Chromium
One Joule per Coulomb is called?
(a) Volt
(b) Ampere
(c) Gauss
(d) Farad
The correct answer is (a) Volt