Answer / abdul rehman

Used in the linefinder circuit to make sure that only one
linefinder can be connected to any line circuit when two or
more line relays are operated simultaneously

Answer / kumar

Mr.Abdul i already viewed this answer in Wikipedia but i
can't get the answer so can u please explain it

Why the generating station rating is in KW though the rating of generators in KVA?

8 Answers   HAL,

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how we can differentiate a motor and a generator just by a glance?

5 Answers  

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what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

0 Answers  

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List out the the types of Mounting Light fixture?

0 Answers   HLL,

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Why dont we get shock while testing for voltage with a line tester? How the bulb inside the tester glows while testing with tester coz we are totaly isolated from earth or we are not giving close path for the current to flow?

3 Answers  

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what is the IPC ? & what the uses ?

0 Answers   Bhel,

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An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

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how to calculate the input current in singel phase and 3phase supply to 5kva ups

1 Answers   Gravity India,

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What is the dimension of A4 sheet in mm?

6 Answers   Bhel,

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what are the type of motors

3 Answers  

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what is voltage present between to phases in a three phase motor?

1 Answers  

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Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

0 Answers   Pride Hotels,

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