When Wattmeter Shows Negative Reading?
The Reading of a Wattmeter Is Proportional to (Current Thro' the Current Coil)X(Voltage Across the Pressure Coil)Xcosine(Angle Between This Current and This...
The reading of a wattmeter is proportional to (current thro' the current coil)x(voltage across the pressure coil)xCosine(angle between this current and this voltage). So if this angle becomes more than 90 degrees the the reading of the wattmeter will be negative.
What is the cause of negative reading of wattmeter?
The reason why a watt-meter displays an negative reading is due to inductive nature of induction motor at low-loads/no-load (similar to transformer).
Which power does wattmeter reading indicate?
Wattmeter measures the average power.
So, wattmeter is a device capable of detecting voltage, current and the angle between the voltage and the current to provide power readings.
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
