Unit Review Questions from CDC 2A672 Volume 1
Element
Mixture
Electrons
Compound
The energy is shared equally by all electrons
Orbiting electrons
Valence electrons
K shell electrons
Insulators
Conductors
Stable atoms
Semiconductors
Inward
Outward
Inward, then outward
Outward, then inward
Area, weight, and state of material
Area, temperature, and type of material
Temperature, weight, and state of material
Temperature, type of material, and state of material
40 ohms
20 ohms
10 ohms
0.5 ohms
.005 amps
.05 amps
.5 amps
50 amps
23 ohms
15 ohms
11 ohms
8 ohms
I3 = 5 amps and IT = 14 amps
I3 = 4 amps and IT = 9 amps
I3 = 4 amps and IT =18 amps
Not enough information to solve
An open causes resistance to decrease; a short causes resistance to increase
Excessive current flow in an open circuit; no current flow in a shorted component
No current flow in an open circuit; excessive current flow in a shorted component
Minimum voltage development across the open component; maximum voltage development across the shorted component
Magnetism
Reluctance
Direct current
Electromagnetic induction
Permeability increases
Magnetic field decreases
Induction of the coil increases
Induction of the coil decreases
Mutual induction
Magnetic induction
Counterelectromotive force
Primary and secondary induction
Current
Step up
Rectifier
Step down
Capacitance increases
Capacitance decreases
Electrons are distorted and scattered
Electrostatic force between the plates decreases
Current leads applied voltage by 90 degrees
Applied voltage leads current by 90 degrees
Has the ability to conduct in one direction and not in the other
Has the ability to conduct in all directions when gated or discharged
3
4
5
6
Holes
Protons
Neutrons
Electrons
Dielectric region
Depletion region
Depletion field
PN region
1
2
3
4
4
3
2
1
Regular diode
Spike protector
Voltage reference
Voltage regulator
In parallel to the load
In series with the load
In parallel to the resistor
In series with the resistor
Reference
Normal diode
Spike protector
Voltage regulator
In parallel to the resistor
In series with the load
In parallel to the load
Forward biased