wattmeter$91284$ - definitie. Wat is wattmeter$91284$
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Wat (wie) is wattmeter$91284$ - definitie

DEVICE THAT MEASURES ELECTRIC POWER
Watt meter; Electrodynamometer; Electric power measurement; Electrodynamic wattmeter; Watt-meter
  • [[Itron]] OpenWay wattmeter with two-way communications for remote reading, in use by [[DTE Energy]]
  • Prodigit Model 2000MU (UK version), shown in use and displaying a reading of 10 watts being consumed by the appliance
  • Siemens electrodynamometer, circa 1910, F = Fixed coil, D = Movable coil, S = Spiral spring, T = Torsion head, M = Mercury cups, I = Index needle
  • Wattmeter
  • Early wattmeter on display at the Historic Archive and Museum of Mining in [[Pachuca]], [[Mexico]]

wattmeter         
¦ noun a meter for measuring electric power in watts.
Wattmeter         
·noun An instrument for measuring power in watts, - much used in measuring the energy of an electric current.
Wattmeter         
The wattmeter is an instrument for measuring the electric active power (or the average of the rate of flow of electrical energy) in watts of any given circuit. Electromagnetic wattmeters are used for measurement of utility frequency and audio frequency power; other types are required for radio frequency measurements.

Wikipedia

Wattmeter

The wattmeter is an instrument for measuring the electric active power (or the average of the rate of flow of electrical energy) in watts of any given circuit. Electromagnetic wattmeters are used for measurement of utility frequency and audio frequency power; other types are required for radio frequency measurements.

A wattmeter reads the average value of the product v(t)i(t) = p(t), where v(t) is the voltage with positive reference polarity at the ± terminal with respect to the other terminal of the potential coil, and i(t) is the current with reference direction flowing into the ± terminal of the current coil. The wattmeter reads P = (1/T) ∫0T v(t)i(t) dt, which in sinusoidal steady-state reduces to Vrms Irms cos(φ), where T is the period of p(t) and φ is the angle by which the current lags the voltage.