primery try cell?

1094

How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com

1172

what is the basic need of domestic loads 1- voltage 2- current

1037

give single line diagram of D.G distribution form alternator to main L.T panel?

6426

A ray hit a smooth regular surface at an angle of 20 from the normal. Calculate : 1. The angle btw the incident and reflection ray. 2. The angle of deviation.

1027

What is mean by hot and cold loop testing?

202

Why neutral is not used in three phases dol starter

974

Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.

1417

why effective resistance should be more than static resistance in transmission line?

1138

why occ characteristics of generator is also called as magnatization characteristics ?

1003

The Q-facr o of a coil given as wL/R. what will be shape of Q versus frequency graph.

1080

The series field winding has low resistance while the shunt field winding has high resistance. Why?

396

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.

1061

can we do the star delta connection of capacitor for 3- phase motor starter.

1109

if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please

1186