Phase control and integral control are used for?

2276

What is the classification of hydro projects based on installed capacity?

1150

HOE WE CAN IMPROOVE BY USE OF CAPACITOR

1925

Dear friends I want to design busbar for1600 kva transformer(i.e2100 amps) what are all the factors to be considered before selectinga busbar what are all the standard sizes of busbars what is the formula for finding current of copper and aluminium busbar

1845

1.Z transform always lies around ? a) origin b) pole c) zero d) z=1. Multiples Mcqs which is bother me can’t find answers on internet. Some help required with little explanation . Note: this is not homework or related to any test. Thanks

2429

why we not used 11kva as a direct our electrnics component.

2767

What is the Basic Difference bitween Long Shunt Connection and Short Shunt Connection in DC Generator?

2300

how will calculate the safe starting current of 3-phase squirrel cage induction motor?

1878

what is the difference between ac motor and dc generator

1802

How to calculat the ratio of HT\LT in energy meter

2651

What is a copper loss or i2r loss pc?

1107

pls tell us AC plant are how do work and parts name with picture

1920

what is apparent poewr, reactive power, & active power?

2271

My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

1830

How to justify this statement ??? "Capacitors in series provide less capacitance but higher voltage breakdown rating for the combination"

1833