Electrical Engineering Interview Questions
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The series field winding has low resistance while the shunt field winding has high resistance. Why?

151

What is the general system requirement of alternator?

105

What is a commutator?

94

What is meant by stator?

92

What are the various types of rotor used in the alternators?

91

Why do we perform an open-circuit test and short-circuit test on the transformer?

92

What is the universal motor?

99

What is an iron loss or core loss pi?

89

Define pole pitch?

79

What are the advantages and disadvantages of the dc motors?

88

What are the advantages and disadvantages of the ac motors?

92

What is meant by stator? What is meant by rotor?

96

What is a copper loss or i2r loss pc?

107

What is dielectric loss?

112

Why does curving the pole faces in a dc machine contributes to a smoother dc output voltage from it?

89


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Un-Answered Questions { Electrical Engineering }

why do we measure VIBRATION in -24vdc and why we adjust gap voltage -9vdc to 10-vdc? i am trying to get this information since 5 years, yet i haven't get reliable answer, i hope i can get from you.

836


what is positive , negative & zero equivalent system resistance

933


what is the affect of earth's magnetic field on the frequency used in aircraft???

1020


What is the use of oil in transformers?

84


Is there any abbrevation for STUB in Stub bus protection

999






What are motor generator sets and explain the different ways the motor generator set can be used ?

105


Why in ESP Positive earthed

1866


what is the most permissible winding temp when we conducting a generator load test?(condition no load)

634


why we use the 100% and 95% stator earth fault protection for the synchronus generator ?

1153


What is the meaning of floating point earthing in battery backed systems ?

960


we have 3.5MVA-11/6KV transformer. how can we calculate earth fault current and NGR calculation?

439


why we are using in reverse power relay in generator singranizing

1174


in indoor type circuit breakers why only the corner breaker trips specially during cold season. What is the reason.

947


difference between high and low impedance BUS BAR relay??

465


In TNC switch, is there any 1NO+1NC block ? and if we move over closing position, is ther any affect on trip position or vice versa?

1202