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Question
What is Single Phasing fault???(not single-phase fault)
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
single phasing is the fault in that one of three phase will
break or not proper then machine or equipments will get
unbalance.

my mean to say is suppose r,y&b is three phase & y is not
showing voltage for some reason than it is single phasing.

if it is happens then machine will not work proper it will
get heated because of phase unbalancing or burnt.
 
Is This Answer Correct ?    34 Yes 3 No
Mehul G. C.
 
Answer
# 2
if 1 phase is out then machine works with two phase with
heavy losses. it takes very high current..
 
Is This Answer Correct ?    15 Yes 2 No
Abhishek (balco)
 
 
 
Answer
# 3
if any one of 3 phases i.e. in r, y & b if r is not working
properly is called single phasing.
 
Is This Answer Correct ?    8 Yes 3 No
Falguni
 
Answer
# 4
dear abhishek,

if it will take high current at single phasing then
equipment damage because of that only single phase preventer
devloped.
 
Is This Answer Correct ?    8 Yes 4 No
Mehul G. C.
 
Answer
# 5
In 1 of the three phases,any of one phase was get affect
due to unbalance of cable or busbar champer with breaker
isolator connection get loose,it will reflect by no current
and less voltage on that particular phase and utilisation
of equipement also shown problem on that phases. i was
faced this problem in previous plant as from lighting
distribution panels problem..

by S.venkatesh
 
Is This Answer Correct ?    4 Yes 1 No
S.venkatesh
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
WHAT IS THE USE OF STARTER AND CHOKE IN TUBE LIGHT? Siemens 1
why fan consume constant power even when we increase or decrease its circuit resistance through speed regulator???   2
if we use fuse in neutral what will happen? L&T 6
what is tandem isolator ??????????   3
Will a load of 15A work if we connect it between one phase and earth?   4
Why transformer rating in kVA not in kW?   5
what is mean by harmonics   1
what is the concept of star delta starter?   7
what is neutral ground resistance relay? how it is helpful in protecting system?   5
Need help. 3 phase system. Neutral line arced and melted upon connection of connector with 3 phase power. Why would that happen?   3
1. what is difference between VCB and ACB.how its works please explian. HP 2
will the power consumption remains the same when speed of the fan cnanges??if so y??   2
 
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