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Electrical Engineering Interview Questions
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What is dc induction motor ? and how to control its speed ?

HAL,

1 3498

difference between crane drive and line drive.

 1389

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

 2784

why we use tapechanger in primary side of transformer

Bhel, L&T,

5 8168

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

 4 12994

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

L&T, Legrand,

2128

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

1 2811

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?

 1483

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 3200

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

 1740

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 12636

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

 2779

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

Etimaad, MRF,

1 4505

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

L&T,

4 8224

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

IBM, R.R. ISPAT LIMITED,

2 6207

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Un-Answered Questions { Electrical Engineering }

How to calculate MCB Breaking capacity.

964

How halogen & merquery lamp works.

1669

Briefing the effects of ASR and ACR of a double closed-loop speed regulating system.

1686

what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

1173

Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

1831




Enlist four components of electrive drives.

1419

What is the maximum percentage voltage drop (vd%)for a motor control center

1539

what is plunger and what's the use of it in motor alignment?

1999

what is consequences of neutral and earth connect?

1645

Write down the design procedure of commutaj.

1718

what are the assumptions made in swineburne's test?

1682

A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?

664

-What shall be short circuit current of LV switchgear for a 1000 kva, 11.415kv, 3 phase tranformer with 5% reactance.

1666

What are the necessary components of the feedback control system?

717

what is the effect of un-synchronized power.

1535

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