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Question
What is Single Phasing fault???(not single-phase fault)
 Question Submitted By :: Rahul
I also faced this Question!!     Rank Answer Posted By  
 
  Re: What is Single Phasing fault???(not single-phase fault)
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 ?    33 Yes 3 No
Mehul G. C.
 
  Re: What is Single Phasing fault???(not single-phase fault)
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 ?    14 Yes 2 No
Abhishek (balco)
 
 
 
  Re: What is Single Phasing fault???(not single-phase fault)
Answer
# 3
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.
 
  Re: What is Single Phasing fault???(not single-phase fault)
Answer
# 4
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
 
  Re: What is Single Phasing fault???(not single-phase fault)
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
 
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different between grounding & earthing? L&T 21
why we not connect the 12 V batteries in parallel to get the more backup supply for an UPS ? wheter off line or on line UPS ?   2
What are the types of Transformer? Name them. HSL 9
whats the diff b/w mpcb and mcb?weather it trips on single phasing or not. Essar 9
What is Earth Fault and Over current Fault.   1
What is the Ideal Earth to Neutral Rating for Techonology Equipment like Routers, Switched, PABX, Computers etc etc?   2
What is IDMT? What is the principle   2
How to calculate battery back up time for a 400 AH battery bank installed in telecom shelter for a load of 20 Amps and time taken to fully charge this battery bank?   2
when a airgap of the induction motor gets larger does it draw more current ??? does it power factor gets lower?   3
Do you know how to measure the earth resistance? if so explain it ABB 38
why voltage will come different in phase?   2
What is the difference between an insulator and a dielectric?   2
 
For more Electrical Engineering Interview Questions Click Here 
 
 
 
 
 


   
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