Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how calculation to be done of cable size/o.h. conductor size of 11kv h.t.for the load of 2175 kw

Shell,

1 4792

6 MVA transformer secondary is rated for 725V at no load. The incommer ACB is rated at 690 V, 3200 Amp. Would there be any effect on performance of ACB due to lower voltage rating?

5 5140

power is the product of voltage and current.so we can measure the value of power just by using ammeter and voltmeter.......then why do we use a wattmeter?

5 5163




WHAT IS THE MEANING OF 'UPF'&'LPF'.... HOW CAN WE DEFINE IT? WHAT IS THE VALUE/RANGE OF EARTH WIRE RESISTANCE USED PARTICULARLY IN HOME....

2 16559

Generator protection &generator test

1 4340

transformer test

4 9290

i want to know about torque of slip ring induction motor

Ambuja,

818

I HAVE CONSUMER WHOSE POWER FACTOR IS 65% I WANT TO INCREASE IT TO 98%.HOW TO CARRY OUT?

7 4554




OUR METER READER TAKE READING OF INDUSTRIAL CONSUMER.THEY ALWAYS ASK HOW TO INCREASE POWER FACTOR FROM 60% TO 99 % TO AVOID PENALTY OF POWER FACTOR.

3 4671

what is cogging and crawling

2 4689

What is the make of breakers, transformers, generators? What are their capacities and ratings?

1 2692

how many earthing should need for UPS, where its connected

HCL,

7 6252

1.what is electricity 2.what is electronice 3.how many modules 4.five electrical component with symbol 5.five electronice componene with symbol 6.how convert 220v.A/C to 24v/DC 7.220V.WAIRING DIAGRAM OF AMMETER/VOLTMETER/OHMMETEER

Hatsun,

1 2370

How to connect frequency meter in metering circuit?(single phase and three phase frequency meter)

3 5201

How to connect frequency meter in metering circuit?(single phase and three phase frequency meter)phase to phase or phase to neutral

ABB,

7 20575


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Un-Answered Questions { Electrical Engineering }

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

634


What is I to C?

787


we use capister for power factor. when we use capaciter in dg circuit  than defect dg. can we use capaciter bank for dg circuit

452


How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?

614


what is the basic need of domestic loads 1- voltage 2- current

655






in india per day how much power is generated including all power station

603


we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

658


what is difference between earthingpits,earthing grid & earthing mess?

993


If 24 KVA AVR having Input voltage 200-400v, Output voltage 415+-1%, what will be the voltage if Load is 13A.

807


Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault

776


In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?

1025


What is the selection process of breakers. Can any one please give a formulation on same?

866


If SFU is Switch Fuse Unit, What is the expansion for FSHF in Electrical Engineering?

1116


What will happen if i replace a inductive proximity switch with photo sensor in a machine?

573


What are all present producing cost of Per KWH of various Fuel?

1261