what is the principle of operation of domestic fan?? what is the role of capacitor in it??

5 Answers  

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what is the difference between online & offline caliberation of KWH meters. Can Digital meters be caliberated

0 Answers  

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sir,in our plant we r using SATEC PM172E power reading meeters in HT panel side it is monitoring the MB data smart viewer(sever).but last one week we did not get readings inthe server only available in meeter.tell me how communicate meter and server. and also what steps we take for checking.

0 Answers  

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It is being often experienced that due to single phasing fault of any source transmission line of any closed loop synchronized circuit all the power transformers with primary stared trips but the power transformer with primary delta wont, why ?

1 Answers   MSEB,

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how to calculate capacitor rating for an induction transformer ex.for 12 mva furnace calculate capacitor rating

2 Answers  

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WHATS THE NEED OF CT INPUTFOR AN VAPM TYPE METERING PT FUSE FAILURE RELAY

1 Answers  

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A.V.R maintains the voltage of a generator when it is in island mode but when the generator is synchronised with grid it maintenance the P.F,how it happens please any body explain it in detail.

2 Answers   TATA,

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what is the knee point voltage ? what is differtial rela? what is impedance and % of impedane? what is the postive phase sequance ? negative phase sequane ? and zero sequance impedance ? what is sortcircuit calculaion? why take calculation? define stabilty test ? why? what sentivity test? define merz protection ? what is the burden ? class 5p10, accracy, metering ct take knee point voltage test thet time what heppan why dont take knee point test to metering ct?

0 Answers  

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we r having 3 core 3 1/2, 4 core cables how we can know this cable has to be used for this purpose?

5 Answers  

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how much distance is required for earth pit to earth pit in substation???

3 Answers   Divis Laboratories,

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how to know the diffrential relay setting of 06mva step- down (delta-star)transformer?

0 Answers   IPCL,

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If we have to find the inductance of a dc shunt motor then by giving dc supply or ac supply and what is the reason for it. (this example is from "to determine the transfer function of a dc shunt motor ")

0 Answers  

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