Basic Electrical Engineering Questions and Answers
Q1.
A substance whose permeability is more than the permeability of free space is?
Answer:
Both paramagnetic and ferromagnetic
Q2.
Magnetic field exists along which of the following?
Answer:
Moving charges
Q3.
When an electric current flows out of the page, what is the direction of the magnetic field?
Answer:
Anti-clockwise
Q4.
In a series circuit, which of the parameters remain constant across all circuit elements such as resistor, capacitor, inductor etc?
Answer:
Current
Q5.
Which, among the following, is the correct formula to find the coupling coefficient?
Answer:
k=M/sqrt(L1L2)
Q6.
If the current in one coil is steady, what happens to the mutual inductance?
Answer:
Zero
Q7.
An RL network is one which consists of ____________
Answer:
Resistor and inductor in series
Q8.
In a pure inductive circuit, the power factor is?
Answer:
0
Q9.
What happens to the effective inductance when a ferromagnetic core is introduced?
Answer:
Increases
Q10.
What happens to the inductance as the area of the cross section of the coil increases?
Answer:
Increases
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