Unit 2 Flashcards
In an alternating current (AC) voltage signal, how many peaks does each cycle have?
2
What component does a magnetic field have little to no influence on?
Resistors
A good example of a use for a variable resistor is a
dimmer switch for a light
What do we call the induced voltage that moves in the opposite direction as the applied voltage in an inductor?
Counter electromotive force (EMF)
What alternating current (AC) characteristic causes an opposition to any CHANGE in current flow?
Inductance
What component may increase or decrease voltage in a circuit?
Transformer
If the secondary coil of a transformer has less coil turns, what does the transformer do to meet circuit needs?
Steps the voltage level down
If the secondary coil of a transformer has more coil turns, what does the transformer do to meet circuit needs?
Steps the voltage up
What type of transformer only uses a secondary coil?
Current
What is the insulating material called that separates the two plates of conductive material in a capacitor?
Dielectric
What alternating current (AC) characteristic causes an opposition to any CHANGE in the value of voltage?
Capacitance
Since most of the capacitors you will see have a rating much lower than one farad, what do we refer to theses as, represented by μf?
Microfarad
Which mnemonic spells out the phase shift in an alternating current (AC) circuit?
ELI the ICEman
What do we call the power created by inductance or capacitance?
Reactive power
What is the bias of a diode when we connect the positive terminal of the battery to the P-type material and the negative terminal of the battery to the N-type material?
Forward
How much resistance does a diode offer to the current lo when the power source connects in the forward bias direction?
Low
In reference to reverse bias, what happens when the majority carriers move outward allowing the barrier voltage to increase?
Increase in the depletion region
What are the four basic types of wiring diagrams used in the power production field?
One-line, schematic, connection, and interconnection diagrams
Which diagram shows the connection of an installation of its component devices and equipment?
Connection
Which diagram provides complete wire numbers, plug and jack pin numbers, and cannon plug numbers required to completely extract and troubleshoot specific circuits?
Connection
