Two waves of the same frequency have opposite phase when the phase angle between them is_________?
A. 360°
B. 180°
C. 90°
D. 0°
A. 360°
B. 180°
C. 90°
D. 0°
A. current lags behind the voltage by 90°
B. current leads the voltage by 90°
C. current can lead or lag the voltage by 90°
D. current is in phase with the voltage
A. low efficiency
B. high power factor
C. unity power factor
D. maximum load current
A. very near to inductive load
B. across the terminals of the inductive load
C. far away from the inductive load
D. any where
A. 0.001 s
B. 0.1 s
C. 10 s
D. 100 s
A. a line which represents the magnitude and phase of an alternating quantity
B. a line representing the magnitude and direction of an alternating quantity
C. a coloured tag or band for distinction between different phases of a 3-phase supply
D. an instrument used for measuring phases of an unbalanced 3-phase load
A. reduces load handling capability of electrical system
B. results in more power losses in the electrical system
C. overloads alternators, transformers and distribution lines
D. results in more voltage drop in the line
E. results in all above