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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What shall be the secondary output voltage if the primary winding of a 220/6V, 50 Hz transformer is energized by an 110V, 60 Hz supply?

HPCL,

1432

What is Plank's Law?

Godrej,

1216

What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?

HPCL,

1292

Classify drilling machines.

Ashok Leyland,

1212

Which type of control system is expensive â€” closed loop or open loop?

GE,

1 4298

When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

HPCL,

1330

How is the gain affected by the introduction of feedback in a control system.

GE,

1207

Initially, when the input is not equal to the output â€” what type of response is this?

GE,

1105

What does a Bode plot tell you?

GE,

1371

What type of DC motor would you see for a lift?

Ericsson,

1136

Classify milling machines.

Ashok Leyland,

1190

Give some differences between open loop and closed loop control systems.

GE,

1226

What type of a DC motor would you use for a lift?

GE,

1130

Explain the working of any one cutting machine

Mahatma Gandhi University,

1161

Do closed loop systems require manual input?

GE,

1222

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Un-Answered Questions { Electrical Engineering }

Why there are some equipment(i.e:TV) that using 2-pin plug instead of three? What happen if there is current leakage? Are we going to get electric shock??

2254

Define what is the function of anti-pumping in circuit breaker?

1391

can the measured percentage error during calibration of single phase energy meter be negative?

2457

what is servo motor and how to work it.

1965

If Dg set load increase 25%, How much increase fuel Consumption (15 kva 2 cylinder DG set)

2325

If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

2281

WHAT IS DEAD END IN PROTECTION?

2686

if a number of plc s are there then how many modbus to be used

2005

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

1757

1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?

2747

single phase power supply give to separate one steel coup with water, what reaction create

2141

what about electrical pannel.? What is meant by plc pannel.?

2364

What consists of 2 or more thermocouples to be connented series?

2384

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<

2211

On a 6 KVA UPS we have to provide a DC MCB for Battery bank of 16 nos (12 V 42 AH). What Shall be the current rating of DC MCB ?

2724

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