Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What are electric motors?

100

What are the applications of the electric motors?

83

What is meant by reactance voltage?

83

How many types of electric motors are there?

81

What is the basic principle of operation of alternators/dc generators?

97

What is the use of bundle conductors?

84

How many types of electrical earthing are there?

91

Why does the adjacent zone of protection overlap?

92

What do you mean by reach and reach the point of the relay?

134

What are the internal and external faults?

83

What are the effects of electrical faults?

88

What is electrical grounding?

83

How many types of protection relays are there based on the characteristic?

87

What do you mean by the zone of protection?

94

What is a slack bus?

87


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Un-Answered Questions { Electrical Engineering }

why the frequency and voltage in india is 230v and 50HZ. when compared to USA say 110v and 60 HZ.

471


How to Calculate The Neutral Earth flat design calculation for the Synchronised generator (Gen 1-650Kva, Gen 2-725Kva

625


what happens when dc generator coupled with cycle shaft.also explain what happens when its loaded

1126


Atwhat condition reverse power relay will act?

1068


what is saturation kit?which use above 15 kw motors panel side.

2702






what is the condition for YnD11

1489


I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

849


which motors are used in electric traction?

100


hey guys help me out.....what  are the industrial uses/functions of nozzles in industries 

639


What is the formula to calculate a three phase alternator

1218


How to calculate Temp from Resister from PT100 equation,

580


1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

1209


pls tell me function of closing coil of A.C.B.

2342


3 phase Motor will be given 2 phase after 2 to 5 second we given 3rd phase so Motor Run sum-time in forward or sum time run reverse direction. All time phase sequence is not change. Why motor run in reverse direction? Please Explain........

938


What is the most accurate way of testing ELCB?ELCB is better than RCD?

2271