Electronics chapter 17-24

The amplitude of a wave form is measured from

0>peak

In a pure inductive circuit, current lags voltage by..

90 degrees

Which AC or DC can be transformed?

AC

What is the basic unit of capacitive reactance?

Farads

The number of cycles completed in one second is called a ________

Frequency

Frequency is measured in ______

Hertz

The total current limiting effect is called ...

Impedance

When current rises and falls at the same rate as the voltage and reverses the direction of flow when the voltage reversed polarity, the current is said to be ___ _______ with voltage

In Phase

The square root of the mean of the square of the instantaneous currents is known as the _____ _____

RMS Current

The current limiting property of an inductor is called _____

Reactance

When AC voltage is rectified and converted into DC, the resulting wave form is normally not pure, flat DC. But is ____

Referred to as repel

What type of load contains pure resistance ?

Resistance loads

Rotating machines normally produce a wave form called a ______ wave

SINE

What is the most common of all AC wave forms?

Sine

The ______ effect occurs when AC induces eddy currents into the conductor, which cause the electrons to be repelled toward the outer surface of the conductor.

Skin

To help overcome the problem of skin effect in high frequency circuits, conductors with a large amount of _____ _____ must be used.

Surface area

What type of AC wave form features voltage rising at a constant rate with respect to time?

Triangular

In a DC circuit, the product of volts times the amperes is called the _____ power

True

What is the unit of measure for the power delivered to the load in a DC circuit?

Watts

The symbol for reactance is

X

Variable capacitors normally have dielectric of

Air

If an AC wave form is rectified and converted into DC, the voltage value that results is the ______ value

Average

What is a device that opposes a change of voltage?

Capacitor

Each complete wave form of 360 degrees is called a _______

Cycle

A term used to indicate the same value as the RMS value is the ______ value

Effective

When a magnetic field continually changes magnitude and direction, a voltage is continually being induced in the coil. The voltage is called _____

Induced voltage

Circuits are generally considered to contain ______ when any type of load that contains a coil is used.

Inductance

The symbol Xl stands for

Inductive reactance

In a pure capacitive circuit, the current _____ the applied voltage by_____

Leads, 90 degrees

Square waves are generally produced by electronic devices called

Ocillators

The unit of inductance is the

Ohm

What is the unit for capacitive reactance?

Ohms

The maximum point of a wave form is called the ______

Peak