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Question
What is MPCB, MCCB, ELCB, RCCB ? Explain them ?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
MPCB-Motor Protection Circuit Breakers
MCCB- moulded case circuit breaker
ELCB-EARTH LEAKAGE CIRCUIT BREAKER
RCCB-RESIDUAL CURRENT CONTROL CIRCUIT BREAKER
 
Is This Answer Correct ?    21 Yes 3 No
Parthasarathi Biswas
 
Answer
# 2
MPCB-Motor Protection Circuit Breakers
MCCB- moulded case circuit breaker
ELCB- Earth Leakage Circuit Breaker
RCCB-ResidualCurrent Circuit Breaker
 
Is This Answer Correct ?    13 Yes 0 No
Syed
 
 
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
hoe to test voltage restrained overcurrent relay?   2
DO MEGGER TEST APPLIED ON SURGE ARRESTOR? IF YES THEN WHAT ARE THE ACCEPTED R VALUE REQUIRED FOR SURGE ARRESTORS FOR VOLTAGE LEVEL 11KV, 33KV   2
In Transformer testing at Shop test we normally test for vector group, open ckt.,short ckt. but what are the other test performed for transformer once it reaches at site.For e.g:if the transformer is dry having rating 1000KVA?   1
WHY DIODE IS CONNECTING ACROSS SWITCHES   5
Why is the earth fault relay connected to the Yellow Phase?   4
Is it possible to connect a dYN1 transformer in parallel with a YNd11 transformer.   4
what is carona and how is occur?   4
I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase), before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???   1
why semicondoctor use in HT cable?   1
what happen if we supply ac to the field of a alternator?   5
what is the deference between watt and KVA IAF 2
WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??   11
 
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