Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to set an overload in a motor?

3 4837

What will happen if the generator turns in a wrong direction?

2 4570

What does a permanent magnet generator do?

1 2880

What is excitation?

2 3818

What is the formulae of Megger value for a A.C.Motor

2287

in three pin plug 6 Amp. 220v AC rating. why earth pin diameter is higher than ohter two pin? what its purpose ?

6 7175

when we connect the capacitor bank in series

2 5817

Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.

HAL,

1553

We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.

HAL,

1598

What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.

1866

How to design grid earthing

1 3899

resistivity of copper

1 2662

In a company the lines carrying 33KV but the load is below 10000Volts so we know that <11KV we can put 11KV lines but the lines are 33KV,..so how we can step down the voltage to 11KV with out erecting a substation

1 2354

What is Icu and Ics and what is difference b/w them. please tell me how to calculate a size of a copper bar for a system or a breaker... reply on... king.arish@gmail.com would be waiting for a logical answer.

1922

What is the basic principle of circuit breaker?.. I read that it works on electro-mechanical principle... Does it require both electric n magnetic conversion to act?

3 5109


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Un-Answered Questions { Electrical Engineering }

WHY MOSTLY Rph IS USED FOR CONTROL CIRCUITS AUX. SUPPLY ?

2037


how to select automotive wire by mathematical equation with given current, vlotage and resistance

1894


How can I calculate ISF of current transformer?

3031


Haw to check conductivity of budbar

1335


What is the function of electron gun used in crt?

594






What are the three major categories of error?

659


How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

1705


How to discuss the phase shift of transformer considering open delta?

962


What is current divider rule (cdr)?

821


HOW TO DESIGN THE body EARTH cable(Copper Conductor) size for 60KVA UPS?

1555


High voltage test procedure of in swgr board. why should measure millivolt drop on testing time?

1622


how current is reverse from its normal direction during the fault?

1988


Differentiate between Zero and Negative sequence current

1441


Explain the laying procedure and laying depth of submarine/subsea power cable for 220/400KV system? Also available cable diameter?

1681


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

2486