Answer Posted / hamed

Directional Earth fault relay requires to Inputs line
Current and line voltage.
So in case of Current there are standard output of any CT
(either 1A or 5A).And for Voltage Inputs there is a
Standard Potential transformers witch give 110/(sqr.root of
3).

is IS says that neutral should be brought to switch box. and this one is a recomended practice

1844

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how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)

2349

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HELLO SIR, IAM PREPARING HPCL EXAMS. SO PLS SEND MATERIAL OF HPCL ELECTRICAL ENG..TO VIJAY_8888@YMAIL.COM

1849

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a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn

1532

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As per the Anchor capstan motor specification, full load current is 200A. starting current is 1750 A and acceleration time is less than 8 seconds. Please guide for selection of cable size.

1833

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how we will deside the high voltage value

1951

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What is the different between conventional MCC and intelligent MCC? Common controller or controller for each bucket

1052

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r we are using in gas turbine mark (5) frame (6) (made in india Bhel 1997) Ā

1702

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Starting current of a 10 HP induction Motor is ______ time’s full load current.

2914

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Differentiate between induced emf and self inductance?

1124

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What is sensitivity of a measurement?

1116

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in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

1913

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What is principle of Floroscent tube 36watt.

2027

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how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?

2096

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how to find the Motor,s insulation Power?

1738

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