Switchgear and Protection Interview Questions and Answers: 1. What is meant by short circuit ? Ans. When conductors of different phases come into contact with each other in a power…
Noise in Amplifiers and its Types: Noise in Amplifiers - Noise is any kind of unwanted signal that is not related to the input. Any electronic component produces a certain…
Crystal Oscillators - Circuit, Working, Advantages and Disadvantages: In crystal oscillators, the usual electrical resonant circuit is replaced by a mechanically vibrating crystal. The crystal (usually quartz) has a high…
Varistors or Voltage Dependent Resistors (VDRS): Varistors, also called the voltage dependent resistors (VDRs), show a high degree of nonlinearity between their resistance value and the applied voltage. They are…
Carrier Pilot Protection and Microwave Pilot Protection: The problem of providing economically an auxiliary channel by means of pilots for long lines directed attention to carrier techniques. In this case…
Overvoltage Articles: Simpson Theory of Lightning: The factors that contribute to the formation or accumulation of charge in the clouds are too many and uncertain. But during thunderstorms, positive and…
Applications of Insulating Materials Articles: Insulating Materials Types: There is no piece of electrical equipment that does not depend on electrical insulation in one form or an other to maintain…
Insulation Coordination in High Voltage: Insulation Coordination in High Voltage - Electric power supply should ensure reliability and continuity to the utility concerns. Hence, the power lines and sub-stations are…