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Electrical Engineering Interview Questions
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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,

855

What is Plank's Law?

Godrej,

674

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,

731

Classify drilling machines.

Ashok Leyland,

672

Which type of control system is expensive — closed loop or open loop?

GE,

1 3518

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

HPCL,

735

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

GE,

728

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

GE,

653

What does a Bode plot tell you?

GE,

797

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

Ericsson,

636

Classify milling machines.

Ashok Leyland,

639

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

GE,

655

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

GE,

661

Explain the working of any one cutting machine

Mahatma Gandhi University,

653

Do closed loop systems require manual input?

GE,

656

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Un-Answered Questions { Electrical Engineering }

How does the phase sequence controller works, how it identifies the phases? confirm working principle

1601

On what cycle does thermal power plant operate?

637

11kv/433v delta/star distribution transformer primary side full load Ht current is 83.33A in , but input side VCB rating 800A.why?

1201

what is the use of permanent magnet generator in exciter

1685

I PURCHASED A DEISEL GENARATOR SET OF AVR TYPE& RATING 125KVA BUT SOME TIMES THE OUTPUT VOLTAGE IS FLUCTUATING WHAT ARE THE PROBABLE REASONS GIVE ME

1395




How to select, design,size & calculate for 11 KV/33KV/66KV/132KV/220 KV/440 KV circuit breaker for HT side of transformer protection/HT distribution protection?

2276

Explain cos(theta) and Sin(theta)

1620

how to test power transformer.YNd11

1082

how does it help for selection of a transformer.

1352

WHAT IS DOL STARTER? HOW IT WORK? GIVE ITS CONTROL AND POWER DIAGRAM .

1692

why industry prefer ht motor instead of lt motor.

1635

can we use engine degreaser for electrical motors?

1282

Explain difference between stand by earth fault and residual earth fault protection?

1523

Please tell me the earthing procedures adopted for the STAR-STAR 3 Phase transformer in india and give a better sugession for earthing

1495

how we do Vector group ,magnetic balance and tap changer test in Transformer?

2016

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