ALLInterview.com :: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Google
   
 
Categories >> Engineering >> Electrical Engineering
 
 


 

 
 Civil Engineering interview questions  Civil Engineering Interview Questions (3073)
 Mechanical Engineering interview questions  Mechanical Engineering Interview Questions (3287)
 Electrical Engineering interview questions  Electrical Engineering Interview Questions (13323)
 Electronics Communications interview questions  Electronics Communications Interview Questions (2364)
 Chemical Engineering interview questions  Chemical Engineering Interview Questions (416)
 Aeronautical Engineering interview questions  Aeronautical Engineering Interview Questions (77)
 Bio Engineering interview questions  Bio Engineering Interview Questions (17)
 Metallurgy interview questions  Metallurgy Interview Questions (79)
 Industrial Engineering interview questions  Industrial Engineering Interview Questions (163)
 Instrumentation interview questions  Instrumentation Interview Questions (2375)
 Automobile Engineering interview questions  Automobile Engineering Interview Questions (106)
 Mechatronics Engineering interview questions  Mechatronics Engineering Interview Questions (38)
 Marine Engineering interview questions  Marine Engineering Interview Questions (43)
 Power Plant Engineering interview questions  Power Plant Engineering Interview Questions (75)
 Engineering AllOther interview questions  Engineering AllOther Interview Questions (1196)
Question
WHAT IS THE THUMB RULE FOR CALCULATING THE P.F CORRECTION 
CAPACITOR?? SAY FOR 100 HP MOTOR HOW MUCH MICRO FARAD 
CAPACITOR IS NEEDED .... THUMB RULE SO QUICK ANSWER WANTED
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
for 2.5HP 1KVAR is required 
Is This Answer Correct ?    6 Yes 0 No
Sanjay Gonsalves
 
Answer
# 2
Requd. KVAR = Running KW*{tan angle (OF running Load)- tan
angle (of P.F. Requried)}
 
Is This Answer Correct ?    2 Yes 2 No
Kapil
 
 
 
Answer
# 3
nearly 1/4.5 of the hp and 1/3 of kw 
Is This Answer Correct ?    2 Yes 4 No
Dharmvir
 
Answer
# 4
First convert HP into KW.
1HP = 746 KW

Then assuming 0.8 powerfactor of motor,calculate KVA

KVA = KW x powerfactor

now calculate kvar by using following

KVAR = square root of (square of kw - squre of kva)
 
Is This Answer Correct ?    3 Yes 7 No
Rajnikant
 
Answer
# 5
Motor is an inductive load so it is consuming
active power that depends on its load and
reactive power that is consumed by motor to set up its
magnetic field it is constant so we should connect a
capacitor which consumes the negative reactive power
according to p.f. correction requirement.
 
Is This Answer Correct ?    5 Yes 10 No
Himanshu
 
Answer
# 6
Approx. one third of HP rating of 3ph motor is kvar of
capacitor required.
 
Is This Answer Correct ?    3 Yes 8 No
Santosh
 
Answer
# 7
For 100 HP load kVAR required will be half i.e 50 kVAR. If
you go for proper calculation, ans would be closer.
 
Is This Answer Correct ?    7 Yes 17 No
Pankaj Malhotra
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
why do we use magnetic contactors ?circuit breakers are not enough?   5
What is the basic diffrence between Electronics & Electrical engineering   13
in transfomer which type of oil is use! Essar 7
If genrator not build up voltage , How u can Manually Excite ?   2
i want the formula of total eletical knowledgement   1
Why the vector group of excitation transformer in static excitation system is Dy5? CSEB 2
what is the disaddvantages of high power factor   2
what is the relation between the leading pf and supply voltage?   1
i am electrical engineer i cant get job in pure electrical industry ,but i got job in instrumentation field whether there is good scope for me, as i am fresher i m not well with the industrial trends so any experienced engineer pls reply me   1
Is it necessary to install Lighting Arrester on both side side (i.e HT and LT) of Transformer in a transmission substation? if yes Why on both side?   1
What is oil temprature with A/T contacts in Transformer ?   1
what is a tri vector meter? what are the tri vectors?   2
 
For more Electrical Engineering Interview Questions Click Here 
 
 
 
 
 


   
Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
   
Copyright 2013  ALLInterview.com.  All Rights Reserved.

ALLInterview.com   ::  KalAajKal.com