Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how can we minimize the off load losses of a distribution transformer which is required to be energized 24x7 ?? capacity of the T/F is 1250 KVA and off load losses are around 2.0 KW.. can we use capacitor bank at the secondary of such a T/F to overcome off load losses? please elaborate briefly...thanks

2 4155

an off load but energized 11/0.4 KV, 1250 KVA T/F has a power factor of 0.65(capacitive)..!! why is it so, though T/F being an inductive device ??

4 4659

What are the specific gravity of fully charged and fully discharged lead-acid battery?

Mukand,

1 3479

pls tell what are doing the three phase motor star and delta connetion with circuit diagram and control wiring .

Mukand,

1460

what are doing the duall connetion in tree phase 10hp or etc motor with circuit diagram

Mukand,

1 1831

what is the circulate the diesel in DG in side pls tell parts name and picture with circulate the diesel

Mukand,

1528

why are the maintaine power factor and how can this control and this is how work.

Mukand,

1477

pls tell us AC plant are how do work and parts name with picture

Mukand,

1451

how can tell us the AC indoor or outdoor which Tr and formulls

Mukand,

1308

ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture

Mukand,

1633

how can see the ac indoor or out door ac which Tr

Wipro,

1549

where are the circulat the diesel in DG parts name with pictue

SSP, Wipro,

1625

what is the star delta connetion and how can do it a three phase motor with control witing with picture

Aurobindo, SA Kent, Wipro,

1801

what is the AC Plant and how can do the work with parts and picture tell us 150 Tr

Wipro,

1542

how can maintain the power factor and why and this is how do work tell us

Wipro,

1547


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Un-Answered Questions { Electrical Engineering }

WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.

1434


can we find the inductance of a induction motor?

1545


what is the eight bit unit?

1962


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?

1206


how to find impedance , mutual indatnce in transmission lines

1648






How to setting the volume of RTCC panel AVR (11kv) controller

1174


how to calculate the change over time for star delta starter for different KW motor?

3741


i want to know d working mechanism of tafe tractors next i like to know d engine type of apache bighs can anyone help me

1799


size of condotory fron voltage level

1720


what is the difference between earthing and unearth

2365


What is the criteria for selecting the voltage classes of an AC Induction Motor.The KW rating above/below which ht/lt selection is made may be provided in details.

1169


what is the difference between circular wdg & ractangular wdg?

1553


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

2065


When color of silica gel will gets change from blue to pink from Top to bottom?

1116


Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault

1697