Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is dc induction motor ? and how to control its speed ?

HAL,

1 3530

difference between crane drive and line drive.

1412

can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?

2802

why we use tapechanger in primary side of transformer

Bhel, L&T,

5 8220

two bulbs of 100w and 40w respectively connected in paralel across a 230v supply.which bulb will glow bright and why?

4 13044

What is the function of RCBO? What are the different sensitivity ratings & each application?

L&T, Legrand,

2149

derive the formula of amp hours is calculated for 12v battery.where no. of plates is given

1 2834

I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?

1497

Why should we use jelly filled armoured cables in underground Communication system? What is the use of the Jelly? If we go for unarmoured, then what happens?

Prasad Group,

1 3224

What would cause a 240v choke that should give 110v out on a 16w lamp to gradually increase to 160v?

1755

Dear all i want to know FEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me shibin_75@yahoo.com

FEWA,

1 12704

what is mppt (maximum power point tracking ) and how they used in solar power generation ??? what are the main components used in mppt?????

2795

what is battery impedance testing and how we perform this test with four wires.

Etimaad, MRF,

1 4522

ALONG WITH MEGGER TEST FOR CHECKING OF MOTOR ,WHY WE MEASURE FOR RESISTANCE AND INDUCTANCE?

L&T,

4 8277

what is the function of supervison relay?Draw its wiring diagram.

IBM, R.R. ISPAT LIMITED,

2 6258


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Un-Answered Questions { Electrical Engineering }

Define gain margin?

724


How vfd saving power.

1550


whatis the commertial spec. of distribution boards ?

1546


what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?

4634


Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards

1663






how to calculate earth fault relay current and CBCT ratio

7794


When is lag lead compensator is required?

640


what is meant by impulse voltage?

1552


What is the Difference between Ac Drives and Dc Drives? According to application, speed, Torque, cost, Reliability, Construction, Motor etc... Thankyou !!!

1681


what is control supply rating of a machine

1502


IF HT CAPACITOR IN ON POSITION IS THERE ANY LOSSES I.S I SQURE OCCURS IN THE SYSTEM

1606


How can we calculate the motor frame sizes?

2920


How time response of the system is divided?

700


BSNL TTA EXAM QUESTION

1775


What is effect of over voltage and under voltage on ACB

1406