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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why battery is connected in series?

HP,

10 16757

what is isolation Transformer?

HP,

8 12506

I WANT TO KNOW LONGFORM OF CT/PT USEDIN POWER PROJECTS OR HT SWITCH YARD.

7 15324

What willbe change in programming when we use 5/3 solenoid inplace of 5/2 in operating of a cylinder?

ITC Infotech,

2018

What is the difference between SSR drive& AC drive?

ITC Infotech,

1 7492

Alternators are invariably star connected why?

4 9910

i need to give section engineer (electrical engineer) for RRB. Please suggest some book

1831

why secondary of open delta pt (two element pt) centre tap is earth what happen when this earth is removed

Essar,

1 6338

what is the difference between AC choke (inductor) and DC choke (inductor), working and design point of view?

Electrotherm,

2 25642

how snubber circuit works to protect switching devices?

Electrotherm,

2 6532

i have 28/32 MVA power transformer with 11/6.6 KC voltage rating and 12%impedance.it have star connection at both side.but it have another thied winding tertiary winding.what is used of this winding. pl tell me

7 10606

we change the speed of the synchronous motor by incresing or decreasing a rotor resistance

1 3519

how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

Bhel, Indorama, Power Grid,

1 6793

As per IS why should the control be taken only from R phase, why not from B or Y phase??!!

2 6231

three phase 180kva diesel generator can take how much load in amp and what is formula to get this?

lenovo,

13 61807


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

The shot circuit in any winding of transformer result? Explain

1286


Brushes are placed at magnetically neutral axis,when brushes reach that point,the armature conductor gets shorted,but it can be seen that the dc supply is also shorted,wont that get damage? help me plz

2247


plz send me HPCL apptitude paper.. maulik_elect@yahoo.co.in

2043


A ray hit a smooth regular surface at an angle of 20 from the normal. Calculate : 1. The angle btw the incident and reflection ray. 2. The angle of deviation.

1893


what is the relation between knowing of the distance between power transformer and the capacitor feeder in case of parallel operation

1937


Why negative feedback is preferred in the control system?

1219


In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)

11774


Who many reason of ignition fail ?

1915


What is different between Circuit breaker and Isolater?

1746


for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance

1907


can any one suggest me the tilt angle of my solar pannel ?? or tell me how can i know the fix tilt angle of my solar pannel?? my cordinates are 31.503629,72.993164.

1765


Why mostly the HV side of transformer has Delta?

3170


How to Calculate The Neutral Earth flat design calculation for the Synchronised generator (Gen 1-650Kva, Gen 2-725Kva

1607


ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

1978


how load of a turbo generator can be increased

1909