Answer Posted / krupa s

to avoid thired harmonics

How to calculate the Efficiency of Chiller

3325

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we have a 2.5hp Starite electric motor water pump,the elec motor burned out,we need to replace starting capacitor(old capacitor specs erased),what microfarad rating capacitor do we need? 110-125V

1848

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how a flip flop can be used as a latch?

1969

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what is the Transformer Impedence?How can calculate?

2074

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What is the formula to calculate the rating of power cable for three phase current.

2116

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hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.

2712

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Anyone who can recommend an equivalent to Envirotemp FR3 of Cooper?

1941

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pls,send the previous year written test questions.

1902

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if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer

1877

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Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?

1931

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What is the difference between alternator and generator?

1284

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how can i determine the gear ratio for a rack and pinion system if an electronic gate operated by an electric motor is to travel a distance of 5meters in 15 seconds.

2026

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Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?

1140

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whit is 33kv power 300*300 cable full current with formula

1774

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What is the lockout relay

1518

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