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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

acsr dog conductor specification

1 3159

generator means

1 2563

in DG synchronization system can i short R,Y,B- phase(DG-1) to R,Y,B Phase (DG-2), HOW IT WORK . WHAY WE NEED TO SYNCHRONIZATION.

1 2584

shall we use a machine having 60Hz frequency in india ? why?

4 3932

Explain M Var? Which types of problem occurs when reactive power increase at the time of full load of plant and at the time of synchronize of plant?

961

What's is the difference between IVT and CVT?

CPCL,

1 13566

Why used in netural grounding transformer for netural side

2 3104

What is drain current of static relay?

1 2486

How to connect surge arrester with equipment?

Godrej,

1 5612

what is the slip of synchronous motor

1 3230

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?

1044

What Different of Ht Side VCB & SF6

2 3117

what is the difference between fault current ant short circuit current?

LG Soft,

1813

We are preparing another project which involves Waste heat recovery from a 1 MW GE Engine. The Engine in particular gives out flue gas at 487Deg C with a flow rate of 5650 kg/hour and this can be cooled to 180 Deg C. This gives a thermal output of ~ 594 KW that is available for input to VAM via heat exchanger / boiler. Additionally 581 KW will be available from engine jacket water (temperature profile 80/ 80 Deg C and a flow rate of 50m3/hr) Our estimation is that 300 TR of cooling is possible with a suitable VAM machine(s). Please advise what is the most suitable arrangement with maximum TR and min Capital expenditure. plz reply me as early as possible

1075

why in transformers voltage given is in the multiple of 11

3 3591


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Un-Answered Questions { Electrical Engineering }

Calculate torque developed by the 3-phase, 5 H.P., 4 pole induction motor runs at 1500 rpm A 23 N-m B 21 N-m C 10 N-m D 0 N-m

2466


Write down the brushes of a de machine.

1082


What is a parabolic signal?

219


Why is ignitor used in sodium vapour lamp

2325


What's the difference between non break power supply and non break non short break power supply

669






Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

264


how to select electrical equipment such as fuse,dg,transformer,motor,msb,wire,cable as per the connecting load..please mention any books to design,take licence

2049


why we are using Load factor?

699


design of IGBT firing circuit for 11KV

1685


What is the feedback in the control system?

240


HOW TO REDUCE POWER PLANT AUXILIARY POWER CONSUMPTION?

2553


in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

905


Actually I have a doubt on neutral and earth.we use Ac power without taking neutral by connecting to earth,but at that time does it affects on efficiency of any electrical components or no? If yes how?

627


we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

1243


IF I KNOW THE AREA OF CROSS SECTION OFTHE WIRE , WATTAGE OF THE LOAD ,VOLTAGE SUPPLY WHAT IM GIVING TO THE LOAD AND ALSO POWER FACTOR OF LOAD ....... SO GIVE ME FOR WHAT AMOUNT OF CURRENT I SHOULD USE WHICH TYPE OF CABLE?

1054