Interview questions with answers- 7

Technical interview question:why synchronous generators are used for the production of electricity?

Answer:synchronous machines have capability to work on different power factor(or say different imaginary power varying the field emf. Hence syn. generators r used for the production of electricity.

Technical interview question:what is the difference between synchronous generator & asynchronous generator?

Answer:In simple, synchronous generator supply's both active and reactive power but asynchronous generator(induction generator) supply's only active power and observe reactive power for magnetizing.This type of generators are used in windmills

Technical interview question:1 ton is equal to how many watts?

Answer:1 ton = 12000 BTU/hr and to convert BTU/hr to horsepower,12,000 * 0.0003929 = 4.715 hp therefore 1 ton = 4.715*.746 = 3.5 KW.

Technical interview question:why syn. generators r used for the production of electricity?

Answer:synchronous machines have capability to work on differentpower factor(or say different imaginary pow varying the field emf. Hence syn. generators r used for the production of electricity.

Technical interview question:Enlist types of dc generator?

Answer:D.C.Generators are classified into two types 1)separatly exicted d.c.generator 2)self exicted d.c.generator, which is further classified into;1)series 2)shunt and 3)compound(which is further classified into cumulative and differential).