Exam 11: Power Factor

In a pure inductive load the current will lag the voltage by degrees.

When the power factor of the plant is 1.0 (unity), the kilovarmeter reads .

A dielectric test set must be used while testing capacitors. This device is often referred to as a because of its ability to produce a high voltage or high potential.

How can you determine the power factor of a system?

When testing capacitors, if the capacitor is good, the microammeter should indicate current.

Most capacitors used in industry, especially for power factor correction, are called capacitors.

In a three-phase circuit, the apparent power can be computed using this formula: VA = volts times times the square root of three.

What rules apply when you are using parallel feeders?

When current begins to flow through a(n) , a magnetic field expands around the .

A capacitor does not require a separate disconnect means if it is connected to the side of the motor overload protective device.

Apparent power is generally called .

Why are capacitors useful in power factor correction?

When two parallel feeders are installed to each of the synchronous condensers, the conductors can be sized for the value of the required ampacity.

The amount of capacitance needed can be determined by connecting a(n) , ammeter, and voltmeter to the circuit.

Conductors in capacitor circuits must be rated no less than percent of the current rating of the capacitor.

The is a rotating electrical machine that has no electrical or mechanical loads connected to it.

A pure element causes the voltage and current to be in-phase with each other.

When testing capacitors, how is an ohmmeter used?

Assume that an inductor has an inductive reactance of 100 ohms and the wire has a resistance of 10 ohms. What is the impedance?