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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.

Greenko Group,

1974

My energy meter ratio is -/110/root 3,1A and connected line CT is 100/1,PT is 11kv/110 so what is the MF for meter

Apollo,

1 5932

how to determine the size of power cable according to load current

JSW,

1 5671

A 60w bulb & a room heater are connected in series.if 60 w bulb is replaced by 100w then what will be the effect on heater out & why?

6 16607

how to calculate the current carrying capacity of cable

Bhel,

2 6682

How will A Medium voltage circuit breaker(11 kV voltage level) operate under short circuit fault condition whether It is having short circuit release like Low voltage circuit breaker or relay should be given?

1944

During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.

1945

How the frame size of a flange mounted AC induction motor is calculated?

APCPDCL,

2062

How to increase solar cell efficiency ?

1 3350

what is difrent between earthing and ground

4 7733

what will happen if ac and dc supplies given

APTransco,

2131

WHAT IS MEAN BY MAGNETIC LOCKING

Bhel,

3 9520

WHAT HAPPEN IF TRANSFORMER HAS GIVEN SQUARE WAVE SUPPLY

APTransco, NTPC,

3 7091

how the CT and PT is connected in the circuit during testing of transformer explain with diagram

KESC,

2018

why we calculate only 11kv 33kv and 132kv ... why not 10kv 20kv 45kv?

Bhel, ISMT,

3 7804


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

how to know the diffrential relay setting of 06mva step- down (delta-star)transformer?

2032


hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly

1991


How to measure size of cable on a given load

1833


transformer spections :: input voltage 0-110-230v; output volage 0-10-12-14v; amp=3A using CRNO CORE, capcaity=50VA primary turns = ? ; secondry turns =?

2096


Why the standard of ambient teperature mentioned as 40 degree celcius in machines.

1964


what is the formula for efficiency of francis turbine and generator for hydropower? what is best way to select francis turbine and generator?

2500


When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

1271


What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan

2057


two phases with neutral supply can be taken in 3C X 10 sq.mm cable .

1427


how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.

2214


What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

2005


what is meant by impulse voltage?

2008


when ID fan will immediately stop through VFD what exactly cause and problem the ID fan

1455


15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help

1579


what is solkor relay and which condition it will act?

3359