AC THEORY
The letter Z represents what?
Apparent Power
What does a capacitor do?
Opposes a change in voltage
What is the unit of measurement for capactive reactance?
Ohms
A conductor moving parallel to lines of magnetic force will produce?
Minimum EMF
The current-limiting property of an inductor is called
Reactance
A capacitor’s ability to store an electric charge
Capacitance
The tendency of alternating current to flow close to the surface of a conductor due to the induced CEMF being greater in the central core.
Skin Effect
The time is takes for the voltage to reach maximum value can be divided into five equal periods. The length of each period is defined as one _________
Time constant
The value of voltage anywhere in its cycle is known as its ___________ value, and it represented by the letter __
Instantaneous, e
In a pure inductive circuit, current _____voltage by ___?
Lags, 90 degrees
What is the symbol for inductive reactance?
XL
A dc generator or an ac alternator is driven by a mechanical machine, usually called a _________
Prime Mover
What are three types of non polarized capacitors?
1. Air
2. Oil filled
3. Paper
4. Plastic filled
5. Mica
6. Ceramic
Inductive Reactance is caused by what in an AC circuit?
A coil of wire