Question

(2-wattmeter method) Describe the load's power factor if one wattmeter reading is 0 W.

A. The load has a power factor of 1 (unity).
B. The load has a leading power factor.
C. The load has a lagging power factor.
D. The power factor cannot be determined with this information.

Answer 1

If one wattmeter reading in the 2-wattmeter method is 0 W, it indicates that the load has a power factor of 1 (unity).

Step-by-step explanation:

If one wattmeter reading in the 2-wattmeter method is 0 W, it indicates that the load has a power factor of 1 (unity).

This means that the load is purely resistive and there is no reactive power or power factor leading or lagging the current.

Therefore, the correct answer is A. The load has a power factor of 1 (unity).