Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how instantanious short circuit current is calculated ? its formula.

Crompton Greaves,

1566

sir, my question is that if we start any three phase induction motor with star connection.will be current taken ? please send a formula.

ABB,

4 9016

i have a roll dia aprox.43 inches and gear box ratio is 14.3.so my question is how was decide the kw rating of motor.

1 2380

How do you convert the lt amps on a transformer to the ht amps?

2 10751

Which UPS (inverter) is better and why ? 12 V inverter and 24 V (two 12 V batteries in series) inverter which is better ......... which has the longer backup which has the greater charging time which has the greater discharging time thank you

2 3242

why dont we connect the two 12 V DC batteries in parallel, for an inverter (UPS)? is there any harm ?

3 4928

How one can check the MAIN of a house wiring ?

1433

1 Ton = ? amperes & power. How much power 1.5 TON split AC consumes in an hour at 17 C , 26 C & 28 C (thermostat' temperature).

Aamal, Ashiana Housing, Carrier, College School Exams Tests, Eastin Hotels, Godrej, LG, Medha, Medha Servo, Onida, Orean, PEL, Sahara, Voltas,

18 437776

What is the Different b\w Circuit Breaker & Isolater

11 10764

WHAT IS ND RELAY AND HOW DOES IT WORK?

2 4042

Can I use measuring current transformers in protection purposes?

7 10567

how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....

1551

Can CT Secondary left open circuited and why(reason)?

5 8811

When capacitor bank connect on line. It's draw some current but it's current not increase of main line ammeter. Why?

MCL, Star Wire,

1 5241

how to set time from star to delta starter

2 12367


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Un-Answered Questions { Electrical Engineering }

HOW TO DESIGN THE body EARTH cable(Copper Conductor) size for 60KVA UPS?

1533


PLEASE ANYBODY HAVE ELECTRICAL CIRCUIT DIAGRAM FOR CHMER PULSE CD 60M SPARKING MACHINE.PLEASE MAIL ME SUPRIYAAYYAPPAN@YAHOO.CO.IN.

2313


Explain in details how you would react to an unexpected incident when your supervisor or manager is not around to give instructions?

7267


Explain the advantages and disadvantages of thermal power plant?

586


hi friends if you have any 400KV Substation Erection and installations Drgs please send to me.My email id:kandi.suresh441@gmail.com

2362






Why is it prefer to initiate circuit breaker failure by "86" lockout relay not by "94" tripping relay ?!

1278


one split ac how can told of this ac which Tr tell me us

1510


What will happen if we on 200kvr capacitor bank(11kv in bus)If there is low load on transformer (1.5 mva 33/11 kv)

1084


Draw the equivalent circuit of crystal oscillator?

731


What is cable tray, its type, and its support?

639


As per the Anchor capstan motor specification, full load current is 200A. starting current is 1750 A and acceleration time is less than 8 seconds. Please guide for selection of cable size.

1409


Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?

1183


If o/p power is doubled by how much does the sound increase

617


How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors

1443


what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?

4604