General Characteristics of Electrical Equipment: All electrical machines, apparatus and other forms of characteristics of electrical equipment must satisfy two main requirements—they must be able to operate continuously under normal service…
Protective Devices and Interlocks: Protective devices must be incorporated in the control circuit (or circuits) to interrupt the flow of current to the motor to guard against overloads or other…
Resistance Heating - Types, Advantages and Applications: Resistance heating is based upon the I2R effect. This method of heating has wide applications such as heat treatment of metals (annealing, hardening…
Difference Between AC and DC Welding: The Difference between AC and DC welding is given in table below Particulars DC Welding AC Welding Equipment Motor-generator set or rectifier is required…
Domestic Refrigerator Working Principle and Construction: The applications of refrigeration for domestic purposes are mainly in the form of domestic refrigerator and home freezers. The main purpose of this type…
Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 7: 302. Sky appears blue due to (a) radiation. (b) reflection. (c) refraction. (d) scattering of light over dust particles.…
Electrical Power Engineering Interview Questions and Answers: AC Distribution Interview Questions and Answers Braking and Mechanical Considerations Interview Questions and Answers Bus Bar Protection Interview Questions and Answers Circuit Breakers…
Substations Interview Questions and Answers: 1. State any four types of substations according to the service ? Ans. The substations, according to the service rendered are: Transformer substations, Switching substations,…