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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How it can worked plc based electrical system And which type of software using.

ITC Infotech,

1677

HOW TO SIZE THE TRANSFORMER OR WHAT ARE THE STEPS INVOLVED IN FINDING THE SIZE OF THE TRANSFORMER FOR GIVEN LOAD SAY 2000KW ?

 1 3002

what happen when power factor of 2 parallely operated transformer become equle?

Flextronics,

1715

how to calculate short ckt current of trafo. ex.3-ph 3MVA trfo. 11/440, impdence voltage=7.25%

 1 3196

what the good value of earth resistance test

 3 4711

If two transformers same rating(11KV / 440V)connected in the same primary line(11KV), can we connect(bus coupler) secondary side directly or need a synchronization????

 3 10777

Why we use RYB phase sequence?

3 6744

what is the maximum rating(KVA) of transformer can be used in distribution side..(11KV/440v) and why??

Jindal,

1 3799

In a running D.G set engine and Alternator is revolving at 1500RPM but no output in the terminal>>>>what to do?? someone told excitation problem ....please advice

 3 4624

If the Power Factor of generator is 0.85...What does this mean and Can the motors connected to this generator operate at PF more than 0.85 ?

 1 3316

How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?

 1533

How to select earthing strip for 100kw induction motor ?

 2 2738

conditions for parallel operation of dc generators

 4 11963

How can we calculate ac current from the given DC current when AC voltage is given?

 1534

why induction motor having low power factor at starting time and high at full load.

BARC, HPB,

6 38661

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Un-Answered Questions { Electrical Engineering }

How to select batteries required for ups and the inverter if we Known load? And how AH is selected of battery?

892

What is your acheivements

1677

why ct's&pt'S out put called as burden,why compelsary short ckt the secondary of ct's while removing the burden?

1537

Why you are switching off arc protection mcb when you are taking shutdown for lv board.

1223

1hp= how much rpm

1586




How can ou verify the size of conductor 50Sq.mm ACSR

1510

how can we calculate the ampacity of the electrical wire/cable. and what are the factors must be considered. pls. elaborate.

1760

What is DC series motor?

724

where solid grounding and where grounding through ngr done and why?

2098

what is vtg limit of earth and neutral at transformer side?

1575

what is meant by brushed alternator & its working principle ?

1546

how to calculate the size of the HT cable

1425

need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.

1316

Is electro plating what type of load whether resistive, inductive or capacitive loads

2906

Explain marx circuit.

881

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