Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Dear All we are having a problem in G120 BOP showing alarm A0503, F0052, F0060 we can not remove fault alarm ,Please any body help us. kowsar

TCCL,

305

advantages and disadvantages of inverse definite minimum time RELAY

208

why high speed tripping relay is used in protection circuit why not normal relay

189




why high speed tripping relay will be used in tripping circuit why not normal relay

187

what are all the components required to assemble solar panel other than pv cell?

226

Anybody tell me about modbus hex address of l&t trivector meter er300p??I want to read voltage,current,kwh etc via rs485...If anybody have a manual then send on my mail..Brijeshmodi18@gmail.Com

274

how to find the voltage's of a transmission line plzz help with pictures i am not able to understand

Student,

126

I meggared my 2c*70 sq mm AL AR XLPE cable. its one end show 50 M ohm . is my cable is safe for laying. I have only one phase and neutral.

339




How the over load setting for HT Motors calculated-provided in Numerical Relay

Damodar Valley Corporation,

325

whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?

DAE,

330

What is slope...? Explain slope 1 and slope 2...?

320

How to calculate main incomer rating of APFC Panel ? Let's say i want to find main incomer for 11kV, 1000kVAR Panel.

273

if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain

NCC,

248

How to discuss the phase shift of transformer considering open delta?

263

Whether 3 phase induction motorwith 100 hp capacity , Amp 160 for which sensitive earth fault relay , type CTUM 15 can be used?

ONGC,

195


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Un-Answered Questions { Electrical Engineering }

can anyone tell me can the electromagnetic waves can be reflected back?if so how &by which material it can be reflected back?please tell me so that it can help to my wireless power trasnmission device.

697


what is the working principle of a DG Set, Alternator, & exiter

8919


Two liquids hot and cold in two vessels are there and an metal bar acts as a conductor of heat between the two vessels. what happens then. what happens after 24 hrs?

927


differnce between single acting and double acting solenoid valves

753


what is model question rrb junior engineer electrical gr.II

907






Size of the power cable like 1.5,2.5,4 sq.mm which area calculated from whick area or how specified the size?

998


hi this is hema, r there any books in particular for the preparation of the APPSC-A.E.E(electrical), if so please mail me the names ... thank u .

854


Difference between low impedance and high impedance Restricted Earth Fault

1789


Differnce between negative Pahse SequenceFunction and unbalance Function?

599


why does rotor rotets?

1258


what happens if dc supply is given and the remedies for it.

578


how to calculate short circuit current for the busbar

220


how does grading rings & spacers in transmission line works? Working Principle?

923


WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >

792


For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?

855