2007-10-18 19:04:04 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Power, as you can see can be measured in a few ways. If the phase angle between voltage and current are the same, then Watts=VA. VA is also called 'apparent power' because it ignores the phase angle. True power is Voltage multiplied by the current, multiplied by the cosine of the phase between voltage and current
VA cos (theta)
2007-10-18 19:21:26 · answer #1 · answered by Maria (uk) 2 · 0⤊ 0⤋
1 horsepower = 746 W.
watt and volt ampere are not exactly the same units.
though for non-reactive, that is lead/lag angle is zero,
1 watt = 1 volt ampere
2007-10-18 19:18:22 · answer #2 · answered by hugo 2 · 0⤊ 0⤋
0.746 kilowatt = 1 Horsepower = 746 watt:
To convert kW to kVA, you should first determine the power factor.
kW = kVA x power factor;
most machines runs from 0.8 to 0.95 power factor so you can use this value for approximation if pf is not stated..power factor is equal to one (1) if the circuit is purely resistive or if the capacitive and inductive values are equal, thus, value of kW=kVA.
2007-10-18 20:09:01 · answer #3 · answered by dj dmaxxx 3 · 0⤊ 0⤋
1 KW = 1.34 HP
1 KW = 1 KVA/P.F where P.F. is power factor. P.F. is around .85 for many electric motors.
2007-10-18 19:26:24 · answer #4 · answered by injanier 7 · 0⤊ 0⤋