Ambit Switchgear Costing Engineer Interview Questions and Answers

DOL stands for Direct-On-Line and is a type of motor starter. Star delta starter is another type of motor starter used for induction motors.

• DOL is a simple and commonly used method of starting induction motors directly from the power supply.

• It provides full voltage to the motor during starting, which can cause high starting current and mechanical stress.

• Star delta starter, on the other hand, reduces the starting curren...read more

MCCB stands for Molded Case Circuit Breaker. It is an electrical protection device used to protect electrical circuits from overloads and short circuits.

• MCCB is a type of circuit breaker that is enclosed in a molded case made of insulating material.

• It is designed to provide protection against overcurrents, such as overloads and short circuits.

• MCCBs are commonly used in industrial and commercial applications to protect ...read more

VCB stands for Vacuum Circuit Breaker.

• VCB is an electrical switch that uses vacuum as the arc quenching medium.

• It is used to protect electrical equipment from short circuits and overloads.

• VCBs are commonly used in power distribution systems and industrial applications.

• They offer faster and more reliable operation compared to traditional circuit breakers.

• Examples of VCB manufacturers include ABB, Siemens, and Schneider