Part 1Part 2Part 3Part 4Part 5 1. A circuit breaker is (A) power factor correcting device (B) a device … Read moreCircuit Breakers – Objective Questions – Part 1

What is an ACB? A circuit breaker in which the contacts open and close in the air at atmospheric pressure … Read moreWorking of Air Circuit Breakers

Armature reaction also occurs in a DC motor just like armature reaction in DC Generator. This is expected because when … Read moreArmature Reaction in DC Motors

Like DC generators, there are different types of DC motors characterized by the connections of the field winding in relation … Read more5 Types of DC Motors | Series, Shunt, and Compound

A DC motor is an electrical machine that converts electrical energy into mechanical energy.  The working of DC motor is … Read moreWorking Principle of DC Motor

46. The short coming of repulsion motor is (A) variation of speed with load (B) low power factor (C) tendency … Read moreObjective Questions on Single Phase Motors | Part 4

In the power system, grounding or earthing means connecting the frame of electrical equipment (non-current carrying part) or some electrical … Read moreWhy Neutral Grounding or Neutral Earthing is Essential?

A universal motor is one of the single-phase motors that can be operated on either direct current or single-phase alternating … Read moreConstruction of Universal Motors

What is VCB? VCB stands for Vacuum Circuit Breaker. In vacuum circuit breakers, the vacuum is used as the arc … Read moreVacuum Circuit Breaker (VCB) – Principle, Construction and Working