Orient Electric Electrical Technician Interview Questions, Process, and Tips

MCB stands for Miniature Circuit Breaker. Types of MCB include single pole, double pole, triple pole, and four pole.

• MCB stands for Miniature Circuit Breaker

• Types of MCB include single pole, double pole, triple pole, and four pole

Mcb is a miniature circuit breaker used for overcurrent protection, while Rcb is a residual current breaker used for earth fault protection.

• Mcb protects against overcurrents by automatically switching off the circuit when a fault is detected.

• Rcb protects against earth faults by detecting imbalances in the electrical current flowing through the circuit.

• Mcb is commonly used in homes and buildings to protect against short...read more

Frequency is the number of occurrences of a repeating event per unit of time.

• Frequency is measured in Hertz (Hz).

• It is commonly used to describe the rate at which a wave oscillates.

• For example, the frequency of a 60 Hz electrical signal means it oscillates 60 times per second.

There are mainly three types of relays in VCB: thermal relay, magnetic relay, and static relay.

• Thermal relay: operates based on the heating effect of current flowing through it.

• Magnetic relay: operates based on the magnetic field produced by current flowing through it.

• Static relay: operates using electronic circuits and solid-state components.