write with technical material, digrams and pictures about Domestic electrical installation system

Discuss the arcing phenomenon in a circuit breaker.

11. Describe the operation of a vector impedance meter with the help of a block diagram. Explain the function of each block.

1: Answer only one of the following: A- What are the advantages of a diesel power station? B- Several points should be taken into account in the selection of the site for the Nuclear power station. State these points.

draw sequence diagram for circuit-breaker example

i. Given the concept of Circuit Breakers discuss five types of circuit breakers and their principle of operation.ii. Produce the (1 Dimensional) design of the delta connected three phase faults .iii. Show the three criteria for the selection of a cable for power system distribution network.

What are the causes of short circuits? What are the effects of short circuit in to electrical appliances, gadgets and other electrical devices and equipments?

1. Electrical explosions directly into the face of a person working on or near energizedelectrical equipment can and will cause serious injury or death. OSHA laws and NFPA70E have strict safety requirements for working on electrical equipment. The basicrules are to turn off the power before working on the equipment and to wear the propertype of nonflammable clothing. To further provide safety for the worker, the NationalElectrical Code has a requirement pertaining to arc-flash hazard warning. This requirement is found in of the NEC.

polyphase please answer as soon as possible

25. Write the necessity of power supply and briefly describe different types of SMPS and UPS.