Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

defination of static variable compensator

1 4301

definition of transformer

10 14086

defination of transistor controlled series capacitor

2636

KVAR Kilovolt-Ampere-Reactance

2 4817

what is the difference between concentrated winding and Distributed winding in motor?

BSL, Infosys, TCS,

7 50427

what are the energy savings methods that are existing in coal based power plant?

1 3682

we have 1000 litre water tank,it located at 25m hight from ground level,the water level on 10m below from ground level.for fill the tank within 1 hour,how much of motor rating(HP) want to select?

1996

What is mean by PID controller? And what is its Long form?

Jindal,

9 30737

In AC Drives How can change & control its output Frequency?

Jindal,

5 8411

What is Difference Between Induction Motor & Servo Motor

Jindal, Kirloskar, KTTM, Star Technocrates, Toyota,

31 105130

why ac supply neutral should earth not in dc (-)

2 5096

110 KW MOTER DOL STATER 240SQ.MM CABLE MOTER AND STARTER DISTANCE IS 110 METER WHAT IS VOTAGE IN MOTER END AND SYSTEM VOTAGE IS 415 V HOW I CAN CALCULTE

2 7098

What is Biased Generator Differential Relay?

2 7267

what is interlocing and what is the purpose of this?

L&T,

4 8134

what should be the minimum rating for using HT Motors?

BSL,

1 5461

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Un-Answered Questions { Electrical Engineering }

Explain Even and Odd signals?

1906

Hoe do calculate the Cable size for Amps rating ?

2161

sir i used 3 hp of motor for spraying pump, other home light and other home items which size of allminium pvc wire ix used

1890

How I calculate the ELCB for circuit breakers?

2180

The ripple frequency in output of fullwave bridge rectifier is a. Half the input b. Twice the input c. Same as input

2262

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.

2815

What is the type of feedback used in an op- amp schmitt trigger?

1028

What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.

2184

When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

2155

how many joints are allowed in underground HT cable of 1 KM

1878

What is the formuala to calculate the rating of motor protection circuit breaker

2221

What is Scheme Test of High Voltage Switchgear. Which tests it includes.

2422

What is the role of power pack in substation protection system?

2699

Is any generator is developed which is operated with out diesal or other expensive source?

2108

What are differences between Voltage, EMF & Potential difference ?

1993

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