Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to Make relay co ordination chart for a Electrical power distribution of a plant

2457

sir please tel me how calucalte kwh if home taken load 30ams how maney kwh taken per day.and 3phase motor 5hp per hars how maney load teken and how mach kwh and forward me to electrical table for calicalte kwh and kvr and kvah

1 2132

how to calculate the current if i know power in MW and voltage 11kv/415v and also want to know that incoming cables for trnsformer

Reliance, KOC, Daikin,

6 33730




How to calculate unit consumption on the basis of load. kWH=kwXhrs.is it correct? kw is motor load.What is unit consumption at 100% load, 50% load & on no load.

GIL,

6 47008

How we can calculate the consumption in kwh of motor on basis of kw @100% load, @50% load & @ no load.

Grasim,

1581

Selection criteria for Vector group in power / distribution transformer.

ABC,

1 6202

If load is 240 kw & pf is 0.8 lagging, than how to increase it from0.8 to 1.0(unit),which rating capacitor used, please give me Calculation. What is effact of consumer & suplier if pf is lagging or leading with on effect machines/ TF/GE etc.

L&T,

6 6909

what is the different between DC & AC load Line.

Emarat,

1 4557




tell me about vfd

8 5340

Suppose am having the PF value .8, so how can we say that is it lagging or leading?

Bhel,

11 7735

how to calculate the multiplication factor in HT incomer trivector meters

Dalkia, Gujarat Energy Transmission Corporation Limited GETCO, Getco,

8 49600

HOW DO I CALCULATE OVER LOAD RELAY & CONTACTOR IN DOL STARTER? & in dol why it is require circuit breaker?

DLF,

6 15981

What is rms value wher it is used??????????

819

How do you reverse the direction of rotation of a FAN?

CPCL, IOCL,

13 40135

how can we rotate a single phase motor (without cap.)in reverse direction?

2 2739


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Un-Answered Questions { Electrical Engineering }

why d.c produces corrosion

765


why generator efficiency is more in swinburnes test?

916


how can we make cable shedule for controll wiring ? which details must be required for it.?

802


What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

709


what is ground fault in ACB?

858






If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?

655


What is the working mechanism of OLTC in Power Transformers????

3157


HOW DOES THE SENSITIVE EARTH FAULT PROTECTION PROVIDED BY CBCT FOR MOTOR CAN HELP IN REDUCING THE SIZE OF CABLE USED TO SUPPLY THE MOTOR?

1787


what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks

760


I am doing apprenticeship training at HT switch yard in NLC. How can i get electrical c license. ??? What r the rules for getting it as an apprentice? ??

495


what is droop control?

794


How do you determine the size of transformer radiators in a transformer?

661


draw vector diagram and +ve,zero sequence diagram of symmetrical three phase fault.

675


What is an Air COmpressor

959


Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com

620