Electric Welding Machine Working Principle: The electric welding machine sets may be either dc or ac type. 1. DC Welding Sets: Such sets are of two types namely (i) generator…
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.…
Refrigeration and Air Conditioning Interview Questions and Answers: 1. What is practical unit of refrigeration ? Define it. Ans. Tonne of refrigeration (TR) is the practical unit of refrigÂeration and…
Bus Bar Protection Interview Questions and Answers: 1. Why use of single bus-bar arrangement is restricted to small and medium sized substations and small power stations ? Ans. The glaring…
Transformer Protection Interview Questions and Answers: 1. What are the faults that are likely to occur in a power transformer ? Ans. The faults likely to occur in a power…
Protection of AC Generators and Motors Interview Questions and Answers: 1. What are the common types of generator faults ? Ans. The common types of faults occurring in synchronous generators…
Non Conventional Methods of Power Generation Interview Questions and Answers: 1. What are renewable and non-renewable energy resources ? Ans. Renewable energy resources are those resources which can be used…