Answer / pillay

DOL starter means a Direct On Line starter, where the AC
supply is directly applied across the motor terminals
whenever it is used unlike some bigger motors where the
power supply goes through a starting system to enable a
smoother start or a reduced current start.Some examples are
star delta ,auto transformer starter ,rotor resistance
starter, soft starter etc.

what is a bus post insulator? explain its application in a substation.

1 Answers   Enercon, HAL,

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I have suguna 3 hp pump for my agreeculture work.It deliver the water from 45 feet well .I suffered by powercut.During powercut i got 2phase supply only .My question is can i run the pump in 2 phase supply using capacitor?.Can u explain me how to connect the capacitors?

2 Answers  

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can we use ELCB and RCBO in one db

6 Answers  

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What is purpose of reactor?.What is different between line and bus reactor?

0 Answers  

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In 1000KVA Transformer why does we connect HT with delta connection and LT with star connection.Illustrate by showing formula?

4 Answers   Tata Motors,

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Why the transformers are rated in kva?

11 Answers   Birla, NTPC, Reddy Labs, Vijai Electricals,

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why we use core type and shell type transformers?

2 Answers  

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what is (+) and (-) in generator field detector stand for?

0 Answers  

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For a certain load i need 100kw load ,In that case what rating mccb should i use?

5 Answers  

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why we short ckt the secondry vo5tage/ winding in transfr and motor?

2 Answers  

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placing earthing pit in pathway is correct or wrong??. placing earthing wireGI1/18 inside walls is correct or wrong?. explain!!!

0 Answers  

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how we calculate electrical load on a building according to area?

0 Answers   HFCL,

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