Electrical Engineering Top Interview Questions and Answers 1 to 50

1:What are the different methods for the starting of a synchronous motor.

2: Name the types of motors used in vacuum cleaners, phonographic appliances,vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

3:Explain different losses in a transformer.

4: Define Voltage types? 

5: What is Tunnel Diode?

6:What is the difference between phase and line voltage?

7: What is difference between terminal voltage and generated voltage?

8: What is the main difference between voltage, EMF and a potential difference?

9:How does a battery produce its potential difference (voltage)?

10:What is the main difference between negative terminal and ground terminal of voltage source?

11: What is load in Electrical Eng? 

12: Give two basic speed control scheme of DC shunt motor?

13: How to Reduce the Ferranti Effect in a Transmission Line? 

14: What is 2 phase motor? 

15: What is the difference between synchronous generator & asynchronous generator? 

16: Define IDMT relay? 

17: What is Latching current? 

18: How is electrical energy produced? 

19: What is the purpose of transient analysis?

20: What is stranding and how it reduces skin effect to some extent?

21: Why skin effect exist? 

22: Why EHV busbars are hallowed and circular? 

23: What are the different electrical clearances in Substation? 

24: Which type of bus arrangement is costlier and more reliable?

25: What is the speed variation of the induction motor from no load to full load?

26: What type of cooling is provided for Generator in power plant? 

27: What is Cavitation and disadvantages of Cavitation?

28: What are the major electric systems in Thermal Power Plant? 

29: What is difference between operating voltage and input voltage? 

30: What is the largest pump in the thermal power plant?

30: What are different types of Steam boilers used in Thermal Power Plants?

31: What are different types of Pulverizes?

32: What is the capacity of CPU of Remote Terminal Unit (RTU)? 

33: What is the programmable language used in PLC? 

34: How Generator Transformer is cooled in Thermal Power Plant?

35: Where Servomechanism is used?

36: Do transients occur in power lines only?

37: What is rated in Electrical Eng?

38: Say there is air conditioner of 1Ton, what does that mean?

39: Why can't we store AC in batteries instead of DC?

40: What is electrical machine? 

41: What are power systems? 

42: What are the advantages of star-delta starter with induction motor?

43: How can you start-up the 40w tube lite with 230v AC/DC without using any choke/Coil?

44: Why Human body feel Electric shock ?? n in an Electric train during running, We did nt feel any Shock? why?

45: What is encoder, how it function? 

46: How tube light circuit is connected and how it works?

47: Why use the VCB at High Transmission System? Why can't use ACB?

48: What is an exciter and how does it work?

49: What is the difference between resistance, reactance and impedance?

50: How does a human body conducts electrical current?