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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is core CT & it's function?

1226

What is servo Motor? What's the advantages of this motor over Induction motor?

Amtek,

1 3220

How instantanious short circuit current is calculated? its formula?

1 2535

What's ND relay & it's functions?

2 3031

Why we are getting low voltage in star connection?

2 3608

why star point of HT motor not earthed?

1219

What is required of exietation to the alternater.

3 2904

What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding?

2 2777

how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

1146

How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula?

2 3015

Why Earthin is not required in Xformer primary side when it is in Star / star?

2 3002

How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula? Equate Petrochemical 0 1 how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec. 0 1 What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding? Equate Petrochemical 0 1 What is required of exietation to the alternater. 0 1 why star point of HT motor not earthed? Equate Petrochemical 0 1 Why we are getting low voltage in star connection? Equate Petrochemical 0 2 What's ND relay & it's functions? Equate Petrochemical 0 2 How instantanious short circuit current is calculated? its formula? Equate Petrochemical 0 2 What is servo Motor? What's the advantages of this motor over Induction motor? Equate Petrochemical 0 2 What is core CT & it's function? Equate Petrochemical 0 3 what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY L & T 0 4 What is required of exietation to the alternater. KNB 1 23 what is the design voltage for 6.6KV 2000 KVAR HT capacitor? Consultancy 0 3 Pls explain about vfd control?Where it is used, Give some example? siemens 1 22 Please explain me abt PQ diagaram in the power sector. 0 9

1078

What will happened if the neutral of secondary of Xformer ( Star point) Note it's above KVA rated Xformer

Equate,

965

Why HT motor is connected in Star?

Equate,

3 5160

In india, according to trade theory above 5 HP motor reqired star delta starter. But we R connect 11 KV motor with 14MW in Direct to line ( With VCB starter combination) Can U Guess, How it is possible ?????

Equate,

1159


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Un-Answered Questions { Electrical Engineering }

what is the function of bearing in dc mchine" and where it is placed

1647


Why human body feel electric shock?

150


What are the various kind of cables used for transmission?

185


What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan

1170


why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor

1603






How does zener phenomenon differ from avalanche breakdown?

171


why current is constant on d.c?

1049


when it is possible kvrah lead & fundamental kwh be equal in electonic trivector meters (3 ph)

1001


1.what is meaning of curve into a mcb. 2.what is basic reason changing of curve

1093


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

1356


in ring main system we use the isolater b/w transfer bus and main bus if we r not use isolatar than wat will be the effect in our sys.

1108


for what purpose the star point is done in ct

489


What will happen if the voltage in my house drops from 220V to any lower voltage?

1146


how to build a network which step down 415v to 1v rms

930


Circuit diagram of tube light without starter using electrical choke

3126