AC Circuits Ch.20-23

Dielectric Strength

A HIPOT is a test set used to test capacitor _____ ____.

Plates/Dielectric

A capacitor is constructed by separating two metal conductors called ____ with an insulating material called a(n) _____

5

A charge curve for a capacitor is divided into ____ time constants.

Capacitor

A device that opposes a change of voltage is a(n) _____.

Exponential

Capacitors charge and discharge at a(n) ______ rate.

Reactive Capacitance

Countervoltage presented by a capacitor is called ____ ___.

AC capacitor, not sensitive to polarity

Nonpolorized Capacitors _______________________.

VA

Of the different power values in an RC circuit, which is known as apparent power?

Electrostatic charge

Energy in a capacitor is stored as a(n) _____ _____.

Farad

He unit capacitance is the ___.

Voltage difference between plates

In a capacitor, the amount of dielectric stress is proportional to the ___ ___ ___ ____.

Leads/90 degrees

In a capacitor, the current _____ the applied voltage by ____.

Leads

In a capacitor, the current _____ the applied voltage.

Life of the capacitor

In a capacitor, the voltage difference between plates controls the ___ ____ ___.

180 degrees out of phase

In a circuit containing a capacitor, the impressed voltage is ___ ____ ____ __ ____ with the applied voltage.

V•I

In a series RC circuit, apparent power can be calculated by ____.

Capacitive Reactance

In a series RC circuit, total impedance is a combination of of resistances of _____ ___ in a circuit.

Resistance and Capacitance

In an RC parallel circuit, the amount of phase angle shift depends on the ratio of the amount of ___ ___ ______.

The Same

In an RC parallel circuit, the voltage across the resistor and the voltage across the capacitor are ____ _____.

Leakage

In some capacitors there is a small amount of current that flows from one plate , through the dielectric material to the other plate. This current is called ____ current.

Increase

Increasing the surface area of the plates will cause the capacitance of a capacitor to _____.

Electrolytic capacitor sensitive polarity

Polarized Capacitors

Electrolytic

Polarized Capacitors are also known as _____ Capacitors.

True/ Apparent

Power Factor (PF) is the ratio of the ___ power to the ____ power.

Military Use

The JAN standard is used to mark a capacitor intended for ________ ____.

Temperature coefficient

The ___ ____ indicates the amount of capacitance change with temperature

Power Factor

The ___ ____ of a circuit is the cosine of the phase angle.

Inversely

The capacitive reactance of a capacitor is _____ proportional to frequency.

F

The farad is symbolized by the letter ___.

Dielectric charge

The material between the plates is rated by a value called the ____ _____.

VARSc

The power in a capacitor is reactive power. The unit of reactive power is the ____.

R/Xc

The quality of a capacitor is found by Q=____

Xc

The symbol for capacitive reactance is ___.

Ohms

The unit of capacitive reactance is the ___.

Voltage rating of dielectric

The voltage rating of the capacitor ___ ___ __ ____.

Air

Variable capacitors normally have a dielectric of ____.

RC Time Constant

When a capacitor is connected in a circuit with a resistor, the amount of time needed to charge the capacitor is called the _____ ___ ____.

AC

When a capacitor is connected to a(n) ___ circuit, current appears to flow through the capacitor.