why we use two slope(differential & restraining) in differential relay.but in busbar protection differential we are using only one slope?please explain

0 Answers   ISRO,

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does a DG set has low fault level as compared to that of a transformer.If yes then why.

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Can we use 1.1x 2 split air-conditioning at a same time in 2kw power loadar

1 Answers  

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i've iocl interview.. if you know the interview process please give me information..

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how to design step down 12 V, 1mA small transformer from 220 V AC? Because according to VI relation and power transfer it results bulky...

0 Answers  

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We have three 33kv substations. All of them energised by same source.When i am checking the phase sequence between one substation to other substation (like R Phase to R Phase) by multimeter i am getting some voltage.Near to LT panels UPS panels are there. Can u explain whether any possible to happen like that. In Phase SEquencemeter is showing correctly in both substations. How is it happen. Explain me.Explain me communication signal will produce Phase difference on this case.

3 Answers  

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if the 10 hp motor name plate indicates rated current as 13.6 amp the what will be the thermal relay setting? Why? And in how much time relay will trip at the set value?

2 Answers  

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Can we connect two CT'S to one energymeter?

1 Answers   KSEB,

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testing ZNYn11(d) vector group transformer

1 Answers  

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whye the current increases in the motor when the load on the motor increases

3 Answers  

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IT IS DESIRABLE THAT THE INCOMING MACHINE SHOULD BE A LITTLE FAST AT THE TIME OF SYNCHRONIZING.EXPLAIN?

1 Answers  

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If ac voltage applied to the field of dc generrator the output of dc generator ?

1 Answers   SSC,

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