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What is the working principle of operation of Air Circuit Breaker (ACB) ?

What is the working principle of operation of Air Circuit Breaker (ACB) ? The working principle of Air Circuit breaker is rather different from o…

What is photocell and where it is used? What is the difference between a PIR and a photocell sensor?

What is photocell and where it is used? A device that detects light. Used for photographic light meters, automatic on-at-dusk street lights and o…

What is the difference between RCDs and RCBOs ?

Do you know what is the difference between RCD s and RCBO s. RCD s are designed for protection from electrocution or electrical fires. They do this …

Types of Electric Motors

Types of Electric Motors DC Motors: Shunt motor Separately Excited Induction motor Series Motor Permanent Magnet DC (PMDC) Compounded motor …

What is an analog voltmeter? What is an ammeter?

What is an analog voltmeter? An analog voltmeter is used specifically for measuring the AC voltage. The reading is displayed with the help of a p…

What is the DOL starter? | How to control DOL starter? | What is the range of DOL starter?

What is the DOL (Direct On-Line) starter? The DOL (Direct On Line) starters are used for motor having low power ratings. Where the starting current…