Unit 3 review question

Resistive

A ____ load has its voltage white form, finishing its cycle at the same same time( without lead or lag) as the current waveform

True

A lagging way form is when the voltage lags between the current in a leading way form that means the voltage lead the current

Nonlinear loads

A nonsinusoidal (or nonmetal waveform) way form is produced when multiple alternating current weight forms of different frequencies are introduced on a circuit typically by_____

True

A pure direct-current waveform displays the polarity and magnitude Of the current or voltage as a flat waveform.

True

A simple AC generator can be visualized as a loop of wire, rotating within the magnetic lines of force between similar poles of a magnet.

False

A three phased generator has each of it three wings evenly spaced around the rotor in the wings are 120° out of phase from each other

Current or voltage

A way form is a mathematical representation of a graph that can be used to visualize a level and direction of_____ in a circuit

True

Current flow in an alternating current circuit moves in both direction due to the changing polarity of the voltage, whereas direct current flows only in one direction

True

Depending on the instant selected the Instantaneous value can range anywhere from a zero to a positive peak or to a negative peak

True

Effective current values is also known as the "Root-Mean-Square" value-

True

For current to flow through a circuit, the power source must apply enough electron O-Matic force to cause electrons to flow

True

Frequency is expressed as " cycles per second" or hertz".

Capacitive

In circuits with ____ Loads, the voltage way form finishes after the current wave form so the voltage lags the current

Inductive

In circuits with____ loads the voltage way for finishes its cycle before the current form so the voltage form leads the current way form.

wind, steam, and water

Most commercial alternate- current power is produced by a generator given by____

Number of turns of wire , strength of the magnetic field, speed of rotation of the coil.

The vault is produced by an AC generator is dependent upon the____

True

The waveform for alternating current circuits is symmetrical with positive above and negative below the zero-reference-level.

True

Wayforms that are in-phase with each other means that every instant the current is exactly in step with the applied voltage, and both the current and voltage weight forms, reach their zero and peak values at the same instant in time.

True

When a magnetic field moves through a coil of wire the lines of force of the magnetic field cause electrons in the wire to flow in a pacific direction where the magnetic field moves in the opposite direction electrons in the wire flow in the opposite direction.

Voltage

When describing the relationship between voltage and current way forms the reference way forms (the one used to compare against) is the____

Phase

When the term _____ is used in relation to waveforms it indicates the degree relationship between two way forms, such as voltage-to-current or voltage-to-voltage