Skip to main content
Electrical Engineering

Return to Question

Tweeted twitter.com/#!/StackElectronix/status/589352939405336577
Math markup. Minor spelling and grammar.
Source Link
edit approved Sep 13, 2013 at 7:16
Li-aung Yip
edit approved Sep 13, 2013 at 7:16
Li-aung Yip
  • 9.1k
  • 29
  • 51

inIn a wattmeter, the current coil helps in measuring current and the potential coil is used for measuring voltage... but the real power that the wattmeter measures is VxIxcos (fi) so how\$V \times I \times \cos(\phi)\$.

How is the power factor involved in the measurement made by a wattmeter ???

in a wattmeter, the current coil helps in measuring current and the potential coil is used for measuring voltage... but the real power that wattmeter measures is VxIxcos (fi) so how is the power factor involved in the measurement made by a wattmeter ???

In a wattmeter, the current coil helps in measuring current and the potential coil is used for measuring voltage... but the real power that the wattmeter measures is \$V \times I \times \cos(\phi)\$.

How is the power factor involved in the measurement made by a wattmeter?

Source Link
Yash Kumar
Yash Kumar
  • 79
  • 1
  • 1
  • 2

How is the power factor part involved in wattmeter reading?

in a wattmeter, the current coil helps in measuring current and the potential coil is used for measuring voltage... but the real power that wattmeter measures is VxIxcos (fi) so how is the power factor involved in the measurement made by a wattmeter ???