Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is bandpass of a transformer?

2 4057

When a square wave is applied to primary of a transformer then what will be output wave form of secondary ?

Sail, TCS, Bhel, Sterling Telecom,

15 35079

please send me the L&T Emb. sys. placement papers and entire details of pattren



Why we connect the capacitor in Delta?if we conect in Star what will happen?

9 24546

What is IGBT?Where it is used? What is the difference between IGBT and Thyristor?

HBL Power Systems, AC, Formo Plastic, SECL,

5 55521

What is mean by diversity Fator?

7 15225

can we use 220 volt 15 w a.c. lamp on 220 volt d.c.


11 12380

Explain Clearly Pahase and Neutral?

7 6728

Why the Motor takes High Current in Starting time?

5 7937

What is the difference between Surge protection device and Lighting arrester?

6 11144

Explain the working principle of Synchronous Generator and Assynchronous generator?


11 43543

why the current leads voltage in the case of a capasitor


9 11943

Motor also having losses, we call KW rating. In transformer and generator having losses but we call KVA Rating why?

9 10080

The rotor current is directly proportional to slip. How?

3 4860

How the starter control the starting current in three phase AC Motor?(In DC apply the reistance).

6 10931

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Un-Answered Questions { Electrical Engineering }

A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N


if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side


we have 15 ampere variyac but we want 30 ampere variyac what we do


sir, Is their any measuring unit of knoking? please explian?


I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?


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


what is POTT and PUTT explain?


I want to know the 'Test voltage' for Tandelta testing of 3.3 / 6.6 / 11 KV Motors. Please explain


As an electrical engineer what are the responsibilities which i can hold in TCS?


how to check three phase motor torque value?


What is the tension required for the 25000 CFM AHU belt


Dear all i am kumaravel. now in chennai. my work is control and relay panel auto cad designing.up to 11kv to 400kv then question is i am improving my knowledge. i want some books name and auther are available for this C&R panel related. plese any one help me


How to Calculate Transformer Earthing Electrode Rod Size both Body and neutral Earthing ? Any Standard Formula? Please Suggted


Why power factor should not be in leading (capacitive) mode of any load.


SUTIABLE FOR ohm's law super conductor