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In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.
What is an iron loss or core loss pi?
while starting a liquid starter ,is there any volage drop on water/soda on tank.can we touch the tank on starting?
A 400KVA transformer has 400 Hz frequency. If the frequency is changed to 50 Hz, then what will be the new KVA rating?
why on delay timer used for fully automatic star delta starter?
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.
we are going to install a solar PV site and how can we calculate PV Solar Panel Efficiency, can anybody tell me complete method for its calculation.
briefly explain principle of resistance welding
What is electrical diversity factor in electrical installations?
What is the need for a controller?
how to calculate the size of the HT cable
In a flange coupling, the flange bolts are designed for
Why water bubbles when D.C. Current is passed through it? Why not when A.C. Current is passed?
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
- two pumps must work with them at the same time but if the first pump start the second pump must delayed for some time to start also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it
