Answer Posted / jebey

1. 1400ampere

how to calculate the tarriff for an industry whose kva demand is 10 mva

1984

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which VFD is better ( LT or HT)

2071

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i am going to correct power factor of 1600kw induction motor,when i calculate capacitance of capacitor it is three time more in star connection than delta. if motor is star connected which connection i shall adopt for capacitors and reason for adopt this connection

1841

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if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

1880

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I am going to appear RRB Sr. Section Engineer Exam, Electrical. Can you send me previous year questions of RRB Electrical engineer. specially Section Engineer questions. my email id is likerahulworld@gmail.com

1812

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HOW CAN WE DECIDE THE SUPPLY VOLTAGE FOR MOTOR ACCORDING TO ITS RATING(IF ANYONE KNOWS GIVE IT WITH EXAMPLE AND ITS CALCULATIONS)

1950

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who can measure the size of power cable?

2163

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How is magnetic leakage reduced?

1174

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how to select overload-relay for perticular motor 1.for D.O.L. starter 2. for Star-delta starter ????

2824

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Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.

1199

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we need a ntpc previous papers

1931

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What are the advantages and disadvantages of negative feed back?

1149

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How many types of instrument cables are there?

1098

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Describe the colour rendering properties of i) tungsten filament lamps ii) tubular fluorescent lamp

3138

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How many points does a Circuit can have?

1971

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