Answer Posted / tareq harb

Actally no body can say 50 is better than 60 or viseversa,
i read about this matter before the main reason why
countries are diffrent is policy, no technical advantages
but countries want to be different & not to follow each
other.

Is vtg is controlled by the resistor? if else how much?

2140

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I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400

1863

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Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB

2799

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1. A bomber drops a bomb from an aircraft flying at 2000 km/hr. at an altitude of 7km. The speed at which the bomb will strike the earth would be

1956

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where solid grounding and where grounding through ngr done and why?

2643

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I want to know how to calculate the size of electricity cable in building?

2058

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If not into production, how far did you follow the design and why did not you see it into production?

2225

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Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?

2177

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what is cascade speed control device?and how this device control the speed of motors?

2228

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all details of DG UPS HVAC

2142

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distribution is maximum done by a)radial b)network c) parallel d)b & c

2064

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why in a swquence network representation, the negetive sequence generated voltage is taken as zero?

2065

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When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?

2150

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What is trip and closing coil in cb? Why need of them

1594

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WHY SEPARATELY EXCITED MACHINE NEEDS EXCITATION BY DC SUPPLY WHY NOT BY AC

1947

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