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 • 
5224 views3 answers-1 votes
Why battery bank is used in substation?
AnsweredChetan Shidling answered 6 years ago • 
2109 views4 answers1 votes
Explain two functions of potential transformer used in substation?
AnsweredChetan Shidling asked 6 years ago • 
1992 views2 answers0 votes
What is molded case circuit breaker?
OpenChetan Shidling asked 5 years ago • 
912 views0 answers0 votes
What is cutler hammer breakers?
OpenChetan Shidling asked 5 years ago • 
1060 views0 answers0 votes
What is Neutral Grounding Resistors?
OpenChetan Shidling asked 6 years ago • 
1042 views0 answers0 votes
Why soil conductivity important for earthing?
OpenChetan Shidling asked 6 years ago • 
1003 views0 answers0 votes
What is low reactance grounding?
OpenChetan Shidling asked 6 years ago • 
1042 views0 answers0 votes
What happens if the magnitude of fault current increases?
AnsweredChetan Shidling asked 6 years ago • 
897 views1 answers0 votes
What is a steady state overcurrent relay?
AnsweredChetan Shidling asked 6 years ago • 
1091 views1 answers0 votes
Why breakdown voltage in AC is different from breakdown voltage in DC while using isolator?
OpenChetan Shidling asked 6 years ago • 
874 views0 answers0 votes
What is current rating of SF6 gas circuit breaker?
AnsweredChetan Shidling asked 6 years ago • 
902 views0 answers0 votes
What is bar type current transformer?
Answeredchetan shidling asked 6 years ago • 
1155 views1 answers0 votes
Difference between relay and circuit breaker?
Answeredchetan shidling asked 6 years ago • 
1048 views1 answers0 votes
What is the use of a potential transformer?
AnsweredChetan Shidling asked 6 years ago • 
1047 views1 answers0 votes
What is 11 pin PLA relay?
Openchetan shidling asked 6 years ago • 
1305 views0 answers0 votes
What is the difference between overload and short circuit?
AnsweredChetan Shidling asked 6 years ago • 
973 views1 answers0 votes
When arc interruption takes place in an oil circuit breaker?
OpenChetan Shidling asked 6 years ago • 
1067 views0 answers0 votes
How the rating of the circuit breaker is decided?
AnsweredChetan Shidling asked 6 years ago • 
1106 views1 answers0 votes
What will be the power factor of arc?
AnsweredChetan Shidling asked 6 years ago • 
1015 views1 answers0 votes
Why sparking occurs when switching off the load?
AnsweredChetan Shidling asked 6 years ago • 
1133 views1 answers0 votes
What is the contact resistance of the circuit breaker?
AnsweredChetan Shidling asked 6 years ago • 
898 views1 answers0 votes
HRC fuse provide the best protection against?
AnsweredChetan Shidling asked 6 years ago • 
942 views1 answers0 votes
Current chopping mainly occurs in?
AnsweredChetan Shidling asked 6 years ago • 
1076 views1 answers0 votes
What are the applications of the SF6 circuit breaker?
OpenChetan Shidling asked 6 years ago • 
955 views0 answers0 votes
What does the nameplate of circuit breaker indicate?
AnsweredChetan Shidling asked 6 years ago • 
1008 views1 answers0 votes
Difference between isolator and circuit breaker?
AnsweredChetan Shidling asked 6 years ago • 
1012 views1 answers0 votes
What is the use of a current transformer?
AnsweredChetan Shidling asked 6 years ago • 
1127 views1 answers0 votes
What are the instrument transformer?
AnsweredChetan Shidling asked 6 years ago • 
944 views1 answers0 votes
What is the use of the series reactor?
AnsweredChetan Shidling asked 6 years ago • 
1054 views1 answers0 votes
What is the isolator?
AnsweredChetan Shidling asked 6 years ago • 
984 views1 answers0 votes
What is the circuit breaker?
AnsweredChetan Shidling asked 6 years ago • 
1049 views1 answers0 votes
What is capacitor bank?
AnsweredChetan Shidling asked 6 years ago • 
1020 views1 answers0 votes
What is substations?
AnsweredChetan Shidling asked 6 years ago • 
1210 views1 answers0 votes
State the relative merits of indoor and outdoor substations?
AnsweredChetan Shidling asked 6 years ago • 
1656 views1 answers0 votes
List out the equipments used in substation?
AnsweredChetan Shidling asked 6 years ago • 
1197 views1 answers0 votes
What is a flexible bus?
AnsweredChetan Shidling asked 6 years ago • 
1109 views1 answers0 votes
In what way is an isolator different from an air-break switch?
AnsweredChetan Shidling asked 6 years ago • 
1082 views1 answers0 votes
Give the sequence of operations during the opening and closing of a circuit in substation?
AnsweredChetan Shidling asked 6 years ago • 
2486 views1 answers0 votes
Give the sequence of operations during the opening and closing of a circuit breaker?
OpenChetan Shidling asked 6 years ago • 
1171 views0 answers0 votes
Why circuit breaker is used for protection?
Answeredchetan shidling asked 6 years ago • 
1053 views1 answers0 votes
What happens if isolator is removed at on load?
AnsweredChetan Shidling asked 6 years ago • 
1121 views1 answers0 votes
What is a relay?
Answeredchetan shidling asked 6 years ago • 
1224 views1 answers0 votes
Directional relays are based on flow of?
Answeredchetan shidling asked 6 years ago • 
1257 views1 answers0 votes
What is solid state relay?
AnsweredNitin asked 6 years ago • 
1029 views1 answers0 votes
What is fuse?
AnsweredChetan Shidling asked 6 years ago • 
1248 views1 answers0 votes
What is the purpose of relay in substation?
AnsweredChetan Shidling asked 6 years ago • 
1655 views2 answers0 votes
Explain two functions of current transformer used in substation?
AnsweredChetan Shidling asked 6 years ago • 
1092 views1 answers0 votes
Why bus bar is used in substation?
AnsweredChetan Shidling asked 6 years ago • 
1092 views1 answers0 votes
What are the equipment used in the substation?
AnsweredChetan Shidling asked 6 years ago • 
1036 views1 answers0 votes
Why conservator tank is used in power transfromer?
AnsweredChetan Shidling asked 6 years ago • 
980 views1 answers0 votes
What are the types of relays used in station?
AnsweredChetan Shidling asked 6 years ago • 
1247 views1 answers0 votes
What is single line diagram?
AnsweredChetan Shidling asked 6 years ago • 
1246 views1 answers0 votes
What is meaning of 110 KV/ 11 KV substation?
AnsweredChetan Shidling asked 6 years ago • 
7481 views1 answers-1 votes
Why the neutral of transformer is grounded in station?
OpenChetan Shidling asked 6 years ago • 
967 views0 answers0 votes
Why CT is connected in series and PT in parallel in station?
OpenChetan Shidling asked 6 years ago • 
1024 views0 answers0 votes
Why the color of breather changes in power transformer?
OpenChetan Shidling asked 6 years ago • 
997 views0 answers0 votes
When isolator is operated in the substation?
OpenChetan Shidling asked 6 years ago • 
919 views0 answers0 votes
What is purpose of WTI and OTI instruments in power transformer?
OpenChetan Shidling asked 6 years ago • 
998 views0 answers0 votes
Explain the difference between SF 6 circuit breaker and vacuum circuit breaker?
OpenChetan Shidling asked 6 years ago • 
958 views0 answers0 votes
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