Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why charcoal and salt add in earthing pit.

Garware, NTPC, Sterling Wilson,

6 25449

How CFL &T5 tube light glows?

HAL,

1578

Is it required to use Automatic transfer Switch in L&T panel board if we use AMF panel with DG set? How the single line diagram will be? Please forward the material to sreenu_207@yahoo.co.in

HAL,

4225

How will be the single line diagram of series trip HT breaker? how it works?

HAL,

2056

Is it required to use 2 nos of body earthings to any machine though if we use TP with E supply is provided to Machine?

HAL,

2 3334

What Should I Know about Metering, Switchgear and Panels?

2 4466

What are the two types of transistor and how they are made?

2 3586

How to reduce power factor correction capacitors failure in an industrial environment with vsd and computers usage in the system

ABB,

2 3817

What is Primary And Secondary Injection Test of Relay and Other Electrical Devices. How IT is carried out.

2997

What is Magnetic Current Test of Transformer.

2 8852

What is Earth Fault and Over current Fault.

1 5790

how much current will take for 1kw power. and what is the eqoutiion which is connecting with kw and A.

2 11976

how much current and power in watts can be carry by 2.5^2mm cu wire and 4 core 10^2mm Al cable?

1 4399

what are the safety of chiller.

7 25336

HOW TO CONVERT SQ MM OF A CABLE TO DIAMETER, EG. CABLE SIZE IS 185SQ.MM WHAT IS THE DIA OF THE CABLE??????????????

Parsons, SWAN,

3 50595


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Un-Answered Questions { Electrical Engineering }

What is power factor why we should maintain the power factor unless what will happen

1233


How many lightning arrestors to be installed on 50MX60MX10M building and is there any formular for that?

1454


What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?

2254


what is the difference between earth leakage and earth fault?

1715


what is the IS foe lightning arrester?

1659






WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?

1656


what are the specifications we must look at to select a relay for any capacity motor?

1543


how is find out kwh step by step

1300


What is Primary And Secondary Injection Test of Relay and Other Electrical Devices. How IT is carried out.

2997


When we need up only in o/p 440v, so why we use directly in 11kva in input?

1253


how to calculate the earth fault current

1933


How to Calculate The sag of OPGW in Transmission Line???

2636


Explain the working of any one cutting machine

641


what is the meaning of impedance protected in instrument cooling fan

2759


How is the connection of the tap changer on the HV side been made?

1486