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 (3157)
 Mechanical Engineering interview questions  Mechanical Engineering Interview Questions (3309)
 Electrical Engineering interview questions  Electrical Engineering Interview Questions (13489)
 Electronics Communications interview questions  Electronics Communications Interview Questions (2396)
 Chemical Engineering interview questions  Chemical Engineering Interview Questions (424)
 Aeronautical Engineering interview questions  Aeronautical Engineering Interview Questions (77)
 Bio Engineering interview questions  Bio Engineering Interview Questions (17)
 Metallurgy interview questions  Metallurgy Interview Questions (80)
 Industrial Engineering interview questions  Industrial Engineering Interview Questions (166)
 Instrumentation interview questions  Instrumentation Interview Questions (2409)
 Automobile Engineering interview questions  Automobile Engineering Interview Questions (109)
 Mechatronics Engineering interview questions  Mechatronics Engineering Interview Questions (38)
 Marine Engineering interview questions  Marine Engineering Interview Questions (45)
 Power Plant Engineering interview questions  Power Plant Engineering Interview Questions (82)
 Engineering AllOther interview questions  Engineering AllOther Interview Questions (1207)
Question
how we can select MCB ratings according to Voltages, Curves.
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
1.We can select the MCB's acoording to Voltage is simple,if
we want 230V,select single pole MCb's else want 415V select
3 pole MCB's.

2.We can select the MCB's according to to Curves is also
simple,there are several types of curvature available..
there are,
B type: react quickly overload i.e 3-4.5 times of full load
current
Type C: react more slowly,these are recommended for
inductive with high inrush currents like fluorescent lamp.5-
10 times of Ifl
Type D: 10-20times of Ifl,recommended for very high inrush
current.
Type K: 8-12 times of full load I,recommended for cable
protection to be provided which include
motors,capacitors,and transformers
Type S: 13-17 times of Ifl,recommended for protection of
control Transformer,

Type Z:

 
Is This Answer Correct ?    31 Yes 2 No
Balakrishnan
 
Answer
# 2
MCB rating depends on voltage as well as load, so first of
all we will have an idea about load which will connected to
MCB.
 
Is This Answer Correct ?    9 Yes 2 No
Kundan Kumar
 
 
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
How silicon gel sucks moisture in the transformer, its have any small exaust fan behind silicon gel.   4
what is the difference between single core,three core,three and half core and four core, and where it can be used ,   1
If induction motor load is incresed motor speed decrases.But in syncronous motor load incrases speed canstant why?   3
Different between megger and contact resistance meter   3
can alternators work at leading power factor?   2
role of shunt coil in circuit breakers   1
what is the use of neutral? IOCL 13
Difference between directional over current and non directional over current ?   2
what is the difference between ONLINE UPS and OFFLINE UPS? GMR 40
How to decide the rating of CBCT? We have 6.6Kv switchgear & having 50/1 cbct ,i want to know how this 50/1 A came? On what basis we decide CBCT reting?   1
which type of motor is suitable for water suction pump ?   4
what is the maximum rating(KVA) of transformer can be used in distribution side..(11KV/440v) and why?? Jindal 1
 
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