Engineering Physics Interview Questions and Answers: 1. Define stress on a body. Ans. The internal force developed per unit area in the body during the application of external force or…
Environmental Engineering Interview Questions and Answers: 1. Define Environment. Ans. The physical, chemical and biological presence of living and non-living things outside an individual species is called as its environment.…
Oxide Film Lightning Arrester: Oxide film lightning arrester operates on the fact that certain dry chemicals have the property to change rapidly from a good conductor to almost perfect insulator…
Thyrite Lightning Arrester Diagram: Thyrite lightning arrester is most common and is mostly used for the protection against high dangerous voltages. It operates on the fact that thyrite, a dense…
Impulse Protective Gap Arrester: It was pointed out that the sphere gap has an impulse ratio of unity, but suffers from the drawback that the arc between its electrodes is…
Directional Overcurrent Protection Principle: For the main bus-bars in the power stations, due to their importance in the operating conditions, it is required that the disconnection be without any delay…
Negative Sequence Protection of Generator against Unbalanced Loads: If, owing to a fault, there is an imbalance in the three-phase stator currents, double frequency currents are induced in the rotor…
Generator Rotor Field Suppression and Neutral Circuit Breaker: In the event of a fault on a generator winding even though the generator circuit breaker is tripped, the fault continues to…