When two wattmeters are used to measure power of a 3 - φ balanced circuit and one wattmeter reads negative, it means the angle of lag is

When two wattmeters are used to measure power of a 3 - φ balanced ci

1.	When two wattmeters are used to measure power of a 3 - φ balanced circuit and one wattmeter reads negative, it means the angle of lag is
A.	0°
B.	30°
C.	60°
D.	Above 60°
Answer» E.