Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is XLPE type cable

Areva,

8 7784

HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?

2655

HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT-SWITCH BOARD,MLDB,ACB,BUSBAR,ETC,......?

814




What is erection of electrical system?

1 3940

what is rotatng magnetic field in case of three or multiple phase alternating current machines???

NHPC,

1 2113

Brushed alternator is also called dc generator ? its true or false ?explain it ?

5 3384

what is the working principle of Brushed alternator ? without exictation how we can give dc supply to rotor ?

1 2382

Totally how much power will be consumed in 1 hour cotinuous running of electric train engine?

L&T,

1 2476




Name some application zrea where IDMT relay can used?

SKB,

3 11601

i am working in a grid substation,TNEB having 13 yrs experience. Am I eligble to get apply for c licence now?

3 4917

I am a possesor of c licence from 1993. I forgot to renew during the year 1998. During that time I was working at TNEB to till date. Is there any possibility to get renewed? or to apply for a new one?

799

HOW MUCH CURRENT DOES SYNCHRONOUS MOTOR TAKES AT SYNCHRONOUS SPEED IN NO LOAD CONDITION ?

687

why different series of vfds (like allenbradley)are used in industry ?

1006

what is difference between c-power & u-power air circuit breaker?

Areva, IIT, Marine Electricals,

2 15741

what is meant by Back emf ?where its occur ?

5 8299


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Un-Answered Questions { Electrical Engineering }

What is the reason of polyphase induction motor tripping suddenly on high current during running at 70% laod? Motor IR , winding resistance & inductance balance. Motor no load current is balance and ok as per mgfr. data.

1144


An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm

1009


my b-tech percentage is 50%. what answer will satisfy the hr ?

834


If a 3 phase induction motor is in off condition in the conveyor and rotor of the motor keeps moving with the conveyor than the resistance of windings of motor varies. why is it so ??

759


How will calculate losses in an multi core Aluminium LT cable of different sizes & upto what length we can use a LT Cable ?

914






66kv under ground cable how to layaing in ground any special case two ckt r runing

673


List out the the types of Mounting Light fixture?

462


how to remover corona effect and hysteresis losses from contactor

831


What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?

874


how to protect motor in dol starter having capacity of 30 hp.40 hp?

2063


I Have 3 Phase 10 KW AC Alternator i found one phase weak, so what will be the reason & what action shouls i take to rectify the same.

764


The synchronous machine excitation system explain

355


WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT??

956


How to calculate earth fault current for 6.6 KV , 50 HZ , 756 Amps , 3000 RPM , 0.8 PF generator

818


who can measure the size of power cable?

785