Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what purpose of the percentage impendance in transformer

3 3287

what is the full form of MEMO? name of memo train.

BirlaSoft,

6 20050

Is potential difference materials property ..? if yes tnen how.. explain brifly.

683




how to calculate the mf of kwh meter,if ct the ratio on meter is 100/5A

2 42137

Generally in d.c. circuits the direction of current is from possitive to negative.In a.c.circuits what is the direction fo current flow

4 3166

1. what type of winding of slip ring ac induction motor rotor and why. 2. how the heating element use in two phase (415 volt)and what rating of element, you prefered.

Simbhaoli Sugars,

1 3134

what objective books are good for preparing for PSU's?

NTPC,

3 9416

how the magnetic flux is said to be rotating & alternating?

4 9680




Whether the vacuum contactor requires Short circuit protection?If No,why?

Reliance,

731

Why Lightning arrester used? Can we use piece of iron as a core material of transformer, if No, why? In CRGOSS material what is meaning of cold rolled grain oriented? Why Impegrenation of Transformer is done? Properties of Insulator? what is phase angle? Testing of transformers (Routine & Monthly)?

NTPC,

6 7629

can i have the methods of speed controls for 3 phase AC MOTORS.

7 3773

what is circuit recombiner and how it is different from circuit breaker

614

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

NCC, Aditya Birla, INEL,

20 94921

what the purpose of protection signaling equipment in substation?

2 5056

ho w to make Incident and accident reporting

1 1349


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Un-Answered Questions { Electrical Engineering }

how to electrically make connection to ferroli GN2N?

579


give me a clear defination of inductance,and how can u calculate inductance of a motor

1517


determine two methods to find loose connection in operational electrical system?

513


why can the rotor of 3 phase slip ring induction motor not be a 2 phase rotor?

709


What is line resistance of cable & how it can be measured ?

204






what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer

1148


Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?

654


Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

757


Write down the brushes of a de machine.

689


number of I/O devices in siemense plc

847


Why 11kv to be generated in generation station

453


how to meas-our losses for L.T & H.T

805


FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

1938


what is meant by residual over voltage & residual earth fault ?

6744


How can we find out LT UG cable fault (size,from-4*25mm sqr to 4*300mm sqr)? How mani types UG cable faults?

1637