Broadcast Engineering Consultants India Electrician Interview Questions and Answers

Line voltage is higher than phase voltage in three-phase power systems.

• Line voltage is the voltage between any two phases in a three-phase power system.

• Phase voltage is the voltage between any one phase and the neutral point.

• In a balanced three-phase system, line voltage is √3 times higher than phase voltage.

• For example, if the phase voltage is 120V, the line voltage would be 208V.

• The phase voltage is used to rate the ...read more

MCB - Miniature Circuit Breaker, ELCB - Earth Leakage Circuit Breaker, RCCB - Residual Current Circuit Breaker, MCCB - Molded Case Circuit Breaker, ACB - Air Circuit Breaker

• MCB: Protects electrical circuits from overcurrents and short circuits

• ELCB: Detects and protects against leakage current to prevent electric shock

• RCCB: Provides protection against residual current and earth faults

• MCCB: Offers protection against over...read more

The capacity of a thermal plant varies depending on the size and type of the plant.

• The capacity of a thermal plant can range from a few megawatts to several gigawatts.

• Factors that determine the capacity of a thermal plant include the type of fuel used, the efficiency of the plant, and the size of the plant.

• For example, a small coal-fired thermal plant may have a capacity of around 50 megawatts, while a large natural ga...read more