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Electrical Engineering Interview Questions
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if we keep frequency constant can we cal a synchronous generator as a dc generator


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What is the diffrence between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

1 3481

what is the difference between watts and volts?

2 3274

the winding of Gen and Motor is star or in delta ??? and why

1 2750

what is the role of energy meter in distribution system ???? technical and non technical losses in distribution system????

1 3434

what are the limitations to use 33kv ac in industries?


At a family reunion were the following people: one grandfather, one grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law, and one daughter-in-law. But not as many people attended as it sounds. How many were there ?


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presently I am working in private sector.In powergrid interview recruiter asked me why you join this organization.

Power Grid,


what is interpose vt where it is used and y it is used?


what is the purpose of reactor in electrical substations ?

2 3811

what is kvarh? Please difine it With calculation

GM General Motors,

3 21827

what is the VA(Voltampire)? define with calculation?

4 4033

why dimmerstate always connected in star connection? what will happen if it connected in delta?


what is meant by GD2 ?


1 3129

what is meant by re-rolling motor? how it differs from standard motor?


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Un-Answered Questions { Electrical Engineering }

Please tell me the earthing procedures adopted for the STAR-STAR 3 Phase transformer in india and give a better sugession for earthing


Any Electrical Engineering jobs?Please refer for interviews. Thank you


1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.


is it value of power factor is more than unit. whats effects in the source supply


What is the test block protection relay if any body know plz explained


i am studying in final year can i allowed for 23rd UES of Indian army


If a surge divertor is required to be protected by 32 amp C Curve Circuit breaker does this limit the amount of protection from surges that you will acheive


Transformer diagram mention each parts ?


i want use the cable size 16cx4 core aluminium usege watts 240x2000w this cable size is correct?


Give atleast 20 alternating current apparatus and devices.


how is the cable tray designed & how its total length is calculated for an Industrial plant Say for Ex. (500KW Motor Load)


The knee point of a current transformer is normally unique and known.So why in the nameplate of a CT they put the minimum value like this Vk> 400v.


Transmission through a short line depends on


what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field


Why cables and busbar both needed in LT Panels?