Page 1 of 55
SLTC EXAM 1 NEWEST VERSON WITH 300 QUESTIONS
AND WELL ELABORATED ANSWERS LATEST UPDATED
VERSION THIS YEAR
A ___ is a graphical representation of what is happening to the voltage in an AC circuit over a
period of time.
sine wave
There are 5 characteristics of AC power:
1. Amplitude
2. Cycles
3. Frequency
4. Peak-to-Peak
5. RMS
___ is the maximum value of current or voltage.
Amplitude
Amplitude is also referred to as the ___ and it can be either positive or negative.
peak to peak
Basic electrical circuits require 3 key elements to function properly:
1. voltage source (electrical pressure)
2. conductor ( wire)
3. load (home, transformer)
Delta generator only has ___ wires; one for each phase
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3
WYE generator has ___ wires; one for each phase; plus a neutral
4
A ___ is one complete repetition of the sine wave pattern.
cycle
The number of times the sine wave pattern cycle occurs in a second is called the ___.
frequency
The measurement for frequency is called :
hertz
US/Canada uses how many hertz
60
The law of charges states that ___ charges attract, and ___ charges repel.
opposite / like
The ___ states that a spinning object will pull away from its center point, and that the faster it
spins, the greater the force becomes.
law of centrifugal force
Protons are always___ charged.
positively
___ are always negatively charged.
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electrons
___ get their name from being neutral and having no charge.
neutrons
An atom can have up to __ shells orbiting it's nucleus.
7
The outermost shell of an atom is called ___.
valence shell
Conductors contain __ electrons in their valence shell.
3 or fewer
Insulators contain ___ electrons in their valence shell.
5 or more
Semiconductors contain ___ electrons in their valence shell.
4
One fundamental law of physics states that energy can be converted from on form to another,
but that it cannot be ___ nor ___.
created / destroyed
Six basic sources of energy:
friction / heat / pressure / light / chemical reaction / magnetism
___ means not moving, and is a charge, not a current.
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static
Chemical reaction produces what type of current?
Direct Current (DC)
___ is the cornerstone of electrical generation, without it alternating current would not be
possible.
Magnetism
___ is magnetism that is created by current flowing through a conductor.
Electromagnetism
In a ___ transformer, there are more turns in the secondary coil than in the primary coil.
step up
In a ___ transformer there are more turns in the primary coil than in the secondary coil.
step down
I = ___ = amps
current
E = ___ = voltage
pressure
R = ___ = Ohms
resistance
P = ___ = watts
SLTC EXAM 1 NEWEST VERSON WITH 300 QUESTIONS
AND WELL ELABORATED ANSWERS LATEST UPDATED
VERSION THIS YEAR
A ___ is a graphical representation of what is happening to the voltage in an AC circuit over a
period of time.
sine wave
There are 5 characteristics of AC power:
1. Amplitude
2. Cycles
3. Frequency
4. Peak-to-Peak
5. RMS
___ is the maximum value of current or voltage.
Amplitude
Amplitude is also referred to as the ___ and it can be either positive or negative.
peak to peak
Basic electrical circuits require 3 key elements to function properly:
1. voltage source (electrical pressure)
2. conductor ( wire)
3. load (home, transformer)
Delta generator only has ___ wires; one for each phase
, Page 2 of 55
3
WYE generator has ___ wires; one for each phase; plus a neutral
4
A ___ is one complete repetition of the sine wave pattern.
cycle
The number of times the sine wave pattern cycle occurs in a second is called the ___.
frequency
The measurement for frequency is called :
hertz
US/Canada uses how many hertz
60
The law of charges states that ___ charges attract, and ___ charges repel.
opposite / like
The ___ states that a spinning object will pull away from its center point, and that the faster it
spins, the greater the force becomes.
law of centrifugal force
Protons are always___ charged.
positively
___ are always negatively charged.
, Page 3 of 55
electrons
___ get their name from being neutral and having no charge.
neutrons
An atom can have up to __ shells orbiting it's nucleus.
7
The outermost shell of an atom is called ___.
valence shell
Conductors contain __ electrons in their valence shell.
3 or fewer
Insulators contain ___ electrons in their valence shell.
5 or more
Semiconductors contain ___ electrons in their valence shell.
4
One fundamental law of physics states that energy can be converted from on form to another,
but that it cannot be ___ nor ___.
created / destroyed
Six basic sources of energy:
friction / heat / pressure / light / chemical reaction / magnetism
___ means not moving, and is a charge, not a current.
, Page 4 of 55
static
Chemical reaction produces what type of current?
Direct Current (DC)
___ is the cornerstone of electrical generation, without it alternating current would not be
possible.
Magnetism
___ is magnetism that is created by current flowing through a conductor.
Electromagnetism
In a ___ transformer, there are more turns in the secondary coil than in the primary coil.
step up
In a ___ transformer there are more turns in the primary coil than in the secondary coil.
step down
I = ___ = amps
current
E = ___ = voltage
pressure
R = ___ = Ohms
resistance
P = ___ = watts
