Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Make a list observation on Transformer?

HSL,

1109

How many earthings are required for commissioning the Transformer?

HSL, Dalmia Group,

14 17555

Name the earthings?

HSL,

3 5004




What is the acceptable earth resistance for Commissioning the Transformer?

HSL,

6 6084

Draw a SLD of HT distribution EB grid up to users Transformer?

HSL, VVL,

4552

What is Engine?

HSL,

6 3395

What are the earthing required for commissionthe DG Set?

HSL,

2 3238

If AVR fails in DG set what will be the affect?

HSL, GoodYear, Hotline Glass,

17 25571




What are the safety measures of Alternator Explain them?

HSL,

1 2294

Draw a SLD of DG distribution up to main LT panel?

HSL, TATA,

6839

What is mechanical interlock?Explain the uses?

HSL,

2 6040

What is UPS?

HSL,

14 7506

Draw a Block diagram of TWO UPS systems connected in Parallel in Paralled mode?

HSL,

2661

Draw a block diagramof Three UPS systems connected in Parallel mode?

HSL,

882

What are types of central ac plants?

HSL,

1 3701


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Un-Answered Questions { Electrical Engineering }

why do we need to use 3c+3e cable, normally i select only 3c+e cable and i think it is enough. pls explain the usefull of 3e cable ( in this project the earthing system is well done)

1102


why tertiary winding is used in transformer with diagram?

929


For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel

1681


why magnetising curve not start with zero voltage?

886


Name of the relay of low lub oil presuure in DG sets

851






A cable with concentric PE conductor must be used with frequency converter circuits what does its means.?

376


how to select battery for 15 KVA UPS with formula

1262


design a 3 bit synchronous and asynchronous counter using T- flipflop

725


What is creepage distance..... what will be the value for different voltage level

772


what is the difference between elcb and rccb ?

976


Instrument connected to a single phase supply

422


working principle of AC Servo Motor with its construction

7478


why we use two slope(differential & restraining) in differential relay.but in busbar protection differential we are using only one slope?please explain

919


What about electrical Units. discrive in detail

683


what is maxemo work permit procedure

696