Moulded Case Circuit Breaker (MCCB) – Types and Working
Moulded Case Circuit Breaker is an electromechanical device which protects a circuit from overcurrent and short circuit. It provides overcurrent … Continue Reading
Circuit Breakers – Objective Questions – Part 1
Part 1Part 2Part 3Part 4Part 5 1. A circuit breaker is (A) power factor correcting device (B) a device … Continue Reading
Working of Air Circuit Breakers
What is an ACB? A circuit breaker in which the contacts open and close in the air at atmospheric pressure … Continue Reading
Armature Reaction in DC Motors
Armature reaction also occurs in a DC motor just like armature reaction in DC Generator. This is expected because when … Continue Reading
5 Types of DC Motors | Series, Shunt, and Compound
Like DC generators, there are different types of DC motors characterized by the connections of the field winding in relation … Continue Reading
Working Principle of DC Motor
A DC motor is an electrical machine that converts electrical energy into mechanical energy. DC motor working is based on the principle … Continue Reading
Objective Questions on Single Phase Motors | Part 4
46. The short coming of repulsion motor is (A) variation of speed with load (B) low power factor (C) tendency … Continue Reading
Why Neutral Grounding or Neutral Earthing is Essential?
Neutral grounding, also known as neutral earthing, involves connecting the neutral point of the supply system, rotating machines, or transformers … Continue Reading
Construction of Universal Motors
A universal motor is one of the single-phase motors that can be operated on either direct current or single-phase alternating … Continue Reading
Vacuum Circuit Breaker (VCB) – Principle, Construction and Working
What is VCB? VCB stands for Vacuum Circuit Breaker. In vacuum circuit breakers, the vacuum is used as the arc quenching … Continue Reading