ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture

1628

Power factor =1.000 at factory in supply. However, PF = 0.8 at motor end. Current = 100 Amp, Voltage = 400 V. What is the power distribution loss? Can I reduce it by adding capacitor at the load feeder?

1592

Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system.

723

What is the use of Surge Capacitor in LAVT?

12889

What is the principal of motor?

640

What is rotary phase converter?

616

why high speed tripping relay is used in protection circuit why not normal relay

841

if main CT is of ratio 50/5, and meter CT is -/5 what will be overall multiplying factor of meter.PT is 11000/110 .

1154

What do you mean by turns ratio of instrument transformer?

618

Why synchronous motor is used in power factor improvement,dc series in lift

1181

what types of electrical & mechanical test conducted in switchyard?

1678

What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)

1405

Why wind turbines wheels rotate constantly

635

by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

1515

we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

1476