Answer / snowwhite10

numerical relay is a microprocessor based relay ...it works
according to the program written using microprocessor.

Answer / naresh nari

numerical relay is a relay which is operated on the bases of numbers.that numbers are coded in the program for the relay operation.hence it is operated depending on the time delay i.e number of cycles per second

Please tell me what is the difference between online UPS & OFF line UPS?

2 Answers   HAL,

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short circuit test of transformer gives what?

9 Answers   NTPC,

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In a d.c circuit, if current and resistance are known, power (P=I*I*R) can be determined. This relationship also applied to an a.c circuit. Comment the reason for this.

3 Answers  

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I want to know the 'Test voltage' for Tandelta testing of 3.3 / 6.6 / 11 KV Motors. Please explain

0 Answers  

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How much load can take a 16 mm aluminum cable 3 phase

0 Answers   L&T, Sanga Energy,

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Can I use cable armour as a earth conductor? if not how many GI/CU wires I need to run along with cable?

1 Answers  

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Tan delta point in transformer to be earth or not?

1 Answers   DMRC,

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Draw the circuit of clapp oscillator?

0 Answers  

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what is the contact resistance of Air circuit breaker??

1 Answers  

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What is the criteria for selecting the voltage classes of an AC Induction Motor.The KW rating above/below which ht/lt selection is made may be provided in details.

0 Answers   DAE,

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What is ST and specify its range of voltage.

0 Answers  

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why the electric train touches only one conductor n where is the neutral n it will be running 3-phase or 1-phase?

3 Answers  

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