MCQ’s on Basic Electrical
Question 11
Maxwell circulating current theorem
(a) Utilises Kirchhoffs voltage law
(b) Utilises Kirchhoff’s current law
(c) Is a network reduction method
(d) Is confined to single loop circuits
Correct Answer is (a) Utilises Kirchhoffs voltage law
Question 12
The insulation on a current carrying conductor is provided to prevent
(a) Current leakage
(b) Shock
(c) Both (a) and (b)
(d) None of these
Correct Answer is (b) Shock
Question 13
When two batteries of unequal voltages are connected in parallel, the EMF of the combination will be equal to the
(a) EMF of the large battery
(b) EMF of the small battery
(c) Average of the EMFs of two batteries
(d) None of these
Correct Answer is (a) EMF of the large battery
Question 14
The magnitude of force acting on a current carrying conductor placed in a magnetic field is independent of
(a) Flux density.
(b) Length of conductor.
(c) Cross-sectional area of conductor.
(d) Current flowing through the conductor.
Correct Answer is (c) Cross-sectional area of conductor.
Question 15
The direction of mechanical force experienced on a current carrying conductor placed in a magnetic field is determined by
(a) Fleming’s left hand rule.
(b) Fleming’s right hand rule.
(c) Helix rule.
(d) Cork screw rule.
Correct Answer is (a) Fleming’s left hand rule.
Question 16
In Fleming’s left hand rule thumb always represents direction of
(a) Current flow
(b) Induced EMF
(c) Magnetic field
(d) Mechanical force
Correct Answer is (d) Mechanical force
Question 17
If a current carrying conductor is placed in a magnetic field, the mechanical force experienced on the conductor is determined by
(a) Simple product
(b) Dot product
(c) Cross product
(d) Any of these
Correct Answer is (c) Cross product
Question 18
A fuse protects an electric circuit by which of the following?
(a) Overloading
(b) Transforming one form of energy into another
(c) Current sport
(d) Current uptake
Correct Answer is (a) Overloading
Question 19
What is the full form of SLD?
(a) Simple Line Diagram
(b) System Line Diagram
(c) Single Line Diagram
(d) Schematic Line Diagram
Correct Answer is (c) Single Line Diagram
Question 20
What is the SI unit of Magnetic Flux?
(a) Tesla
(b) Weber
(c) Ohm
(d) Newton
Correct Answer is (b) Weber