The excitation is adjusted until a near unity power factor is obtained ( often automatically ).
2.
In this configuration, output currents are in phase with line voltages to produce a unity power factor.
3.
The minimum armature current corresponds to the point of unity power factor ( voltage and current in phase ).
4.
PI controller in order to achieve operation with unity power factor ( i . e . Q grid = 0 ).
5.
:: : : : Power = Current times voltage = Current squared times resistance = Voltage squared divided by resistance assuming direct current or alternating current with unity power factor ( resistive load ).
6.
In a testing system, a resistive load simulates real-life resistive loads, such as incandescent lighting and heating loads as well as the resistive or unity power factor component of magnetic ( motors, transformers ) loads.
7.
The salt water rheostat operates at unity power factor and presents a resistance with negligible series inductance compared to a wire wound equivalent, and was widely used by generator assemblers, until 20 years ago, as a matter of course.
8.
One coil, A, will be connected through a resistor and the second coil, B, through an inductor, so that the current in coil B is delayed with respect to current in A . At unity power factor, the current in A is in phase with the circuit current, and coil A provides maximum torque, driving the instrument pointer toward the 1.0 mark on the scale.
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