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.…
Harmonic Restraint Differential Relay for Transformer Protection: The operation of the relays because of magnetising inrush current can be avoided by using kick fuses across the relay coils or using…
Power Converters Articles: What is a Power Converter? Solid-state power converter are employed for obtaining the appropriate form of electrical energy such as direct current or adjustable-frequency alternating current (required…
Non Linear Wave Shaping Articles: What is Clipper Circuit? – Definition and Classification: Clipper Circuit is one which controls the shape of the waveform by removing or “clipping” off an…
Linear Wave Shaping Articles: High Pass RC Circuit Diagram, Derivation and Application: The High Pass RC Circuit is shown in Fig. 29.1. The reactance of the capacitor is given as…
What is Summation Transformer? Summation devices are employed to compare the relaying quantities derived from the currents in the three phases of the primary circuit. The effectiveness of the comparison…
Thyristor Control of 3 Phase Synchronous Motor: The synchronous motor is a constant speed motor and it develops torque only at synchronous speed which is directly proportional to supply frequency.…
Compact Fluorescent Lamp (CFL) - Working Principle, Types, Advantages and Disadvantages: A compact fluorescent lamp (CFL), also known as a compact fluorescent light or energy saving light, is a type…