The Ac Watt Meter Assignment Help | The Ac Watt Meter Homework Help

The A.C. Watt Meter

A watt meter is an instrument used to measure directly the power consumed in a circuit. A dynamometer type watt meter consists of two fixed coils CC which are called the current coils. These are connected in series with the load in AC circuit. It has a movable coils V called the voltage coil. The coils V with a high non-inductive resistance R is connected parallel to the load.

The same current i flows through the load and current coils. The p.d V across the load is proportional to the current in the voltage coil i2.

Torque experienced by the moving coil τ ∞ i x i2
    Τ ∞ iV        [. : V ∞ i2]
And τ ∞ deflection θ.
 . :     Vi ∞ θ
Power ∞ θ.
Vi gives the instantaneous power which is true power. Thus the power is measured.

The AC Watt Meter

For more help in The A.C. Watt Meter click the button below to submit your homework assignment