All Questions


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All Questions › Category: Switchgear And Protection
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The relay which is most sensitive to power swings (mal operation) is?
Answeredchetan shidling asked 6 years ago • 
5016 views3 answers-1 votes
Why battery bank is used in substation?
AnsweredChetan Shidling answered 6 years ago • 
1968 views4 answers1 votes
Explain two functions of potential transformer used in substation?
AnsweredChetan Shidling asked 6 years ago • 
1885 views2 answers0 votes
What is molded case circuit breaker?
OpenChetan Shidling asked 5 years ago • 
812 views0 answers0 votes
What is cutler hammer breakers?
OpenChetan Shidling asked 5 years ago • 
963 views0 answers0 votes
What is Neutral Grounding Resistors?
OpenChetan Shidling asked 5 years ago • 
938 views0 answers0 votes
Why soil conductivity important for earthing?
OpenChetan Shidling asked 5 years ago • 
899 views0 answers0 votes
What is low reactance grounding?
OpenChetan Shidling asked 5 years ago • 
932 views0 answers0 votes
What happens if the magnitude of fault current increases?
AnsweredChetan Shidling asked 5 years ago • 
795 views1 answers0 votes
What is a steady state overcurrent relay?
AnsweredChetan Shidling asked 5 years ago • 
966 views1 answers0 votes
Why breakdown voltage in AC is different from breakdown voltage in DC while using isolator?
OpenChetan Shidling asked 5 years ago • 
777 views0 answers0 votes
What is current rating of SF6 gas circuit breaker?
AnsweredChetan Shidling asked 6 years ago • 
835 views0 answers0 votes
What is bar type current transformer?
Answeredchetan shidling asked 6 years ago • 
1031 views1 answers0 votes
Difference between relay and circuit breaker?
Answeredchetan shidling asked 6 years ago • 
931 views1 answers0 votes
What is the use of a potential transformer?
AnsweredChetan Shidling asked 6 years ago • 
959 views1 answers0 votes
What is 11 pin PLA relay?
Openchetan shidling asked 6 years ago • 
1192 views0 answers0 votes
What is the difference between overload and short circuit?
AnsweredChetan Shidling asked 6 years ago • 
869 views1 answers0 votes
When arc interruption takes place in an oil circuit breaker?
OpenChetan Shidling asked 6 years ago • 
973 views0 answers0 votes
How the rating of the circuit breaker is decided?
AnsweredChetan Shidling asked 6 years ago • 
1008 views1 answers0 votes
What will be the power factor of arc?
AnsweredChetan Shidling asked 6 years ago • 
924 views1 answers0 votes
Why sparking occurs when switching off the load?
AnsweredChetan Shidling asked 6 years ago • 
1024 views1 answers0 votes
What is the contact resistance of the circuit breaker?
AnsweredChetan Shidling asked 6 years ago • 
810 views1 answers0 votes
HRC fuse provide the best protection against?
AnsweredChetan Shidling asked 6 years ago • 
850 views1 answers0 votes
Current chopping mainly occurs in?
AnsweredChetan Shidling asked 6 years ago • 
978 views1 answers0 votes
What are the applications of the SF6 circuit breaker?
OpenChetan Shidling asked 6 years ago • 
834 views0 answers0 votes
What does the nameplate of circuit breaker indicate?
AnsweredChetan Shidling asked 6 years ago • 
928 views1 answers0 votes
Difference between isolator and circuit breaker?
AnsweredChetan Shidling asked 6 years ago • 
918 views1 answers0 votes
What is the use of a current transformer?
AnsweredChetan Shidling asked 6 years ago • 
1037 views1 answers0 votes
What are the instrument transformer?
AnsweredChetan Shidling asked 6 years ago • 
840 views1 answers0 votes
What is the use of the series reactor?
AnsweredChetan Shidling asked 6 years ago • 
966 views1 answers0 votes
What is the isolator?
AnsweredChetan Shidling asked 6 years ago • 
884 views1 answers0 votes
What is the circuit breaker?
AnsweredChetan Shidling asked 6 years ago • 
948 views1 answers0 votes
What is capacitor bank?
AnsweredChetan Shidling asked 6 years ago • 
935 views1 answers0 votes
What is substations?
AnsweredChetan Shidling asked 6 years ago • 
1100 views1 answers0 votes
State the relative merits of indoor and outdoor substations?
AnsweredChetan Shidling asked 6 years ago • 
1539 views1 answers0 votes
List out the equipments used in substation?
AnsweredChetan Shidling asked 6 years ago • 
1062 views1 answers0 votes
What is a flexible bus?
AnsweredChetan Shidling asked 6 years ago • 
997 views1 answers0 votes
In what way is an isolator different from an air-break switch?
AnsweredChetan Shidling asked 6 years ago • 
968 views1 answers0 votes
Give the sequence of operations during the opening and closing of a circuit in substation?
AnsweredChetan Shidling asked 6 years ago • 
2344 views1 answers0 votes
Give the sequence of operations during the opening and closing of a circuit breaker?
OpenChetan Shidling asked 6 years ago • 
1051 views0 answers0 votes
Why circuit breaker is used for protection?
Answeredchetan shidling asked 6 years ago • 
931 views1 answers0 votes
What happens if isolator is removed at on load?
AnsweredChetan Shidling asked 6 years ago • 
1011 views1 answers0 votes
What is a relay?
Answeredchetan shidling asked 6 years ago • 
1092 views1 answers0 votes
Directional relays are based on flow of?
Answeredchetan shidling asked 6 years ago • 
1130 views1 answers0 votes
What is solid state relay?
AnsweredNitin asked 6 years ago • 
916 views1 answers0 votes
What is fuse?
AnsweredChetan Shidling asked 6 years ago • 
1124 views1 answers0 votes
What is the purpose of relay in substation?
AnsweredChetan Shidling asked 6 years ago • 
1547 views2 answers0 votes
Explain two functions of current transformer used in substation?
AnsweredChetan Shidling asked 6 years ago • 
1004 views1 answers0 votes
Why bus bar is used in substation?
AnsweredChetan Shidling asked 6 years ago • 
992 views1 answers0 votes
What are the equipment used in the substation?
AnsweredChetan Shidling asked 6 years ago • 
956 views1 answers0 votes
Why conservator tank is used in power transfromer?
AnsweredChetan Shidling asked 6 years ago • 
895 views1 answers0 votes
What are the types of relays used in station?
AnsweredChetan Shidling asked 6 years ago • 
1153 views1 answers0 votes
What is single line diagram?
AnsweredChetan Shidling asked 6 years ago • 
1147 views1 answers0 votes
What is meaning of 110 KV/ 11 KV substation?
AnsweredChetan Shidling asked 6 years ago • 
7304 views1 answers-1 votes
Why the neutral of transformer is grounded in station?
OpenChetan Shidling asked 6 years ago • 
867 views0 answers0 votes
Why CT is connected in series and PT in parallel in station?
OpenChetan Shidling asked 6 years ago • 
917 views0 answers0 votes
Why the color of breather changes in power transformer?
OpenChetan Shidling asked 6 years ago • 
898 views0 answers0 votes
When isolator is operated in the substation?
OpenChetan Shidling asked 6 years ago • 
815 views0 answers0 votes
What is purpose of WTI and OTI instruments in power transformer?
OpenChetan Shidling asked 6 years ago • 
893 views0 answers0 votes
Explain the difference between SF 6 circuit breaker and vacuum circuit breaker?
OpenChetan Shidling asked 6 years ago • 
863 views0 answers0 votes
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