MECHANICAL AND ELECTRICAL SYSTEMS CHAPTERS 17–20 QUESTIONS AND ANSWERS |
EXAM PREP & STUDY GUIDE 2026/2027
Conductor - ANS ✔✔carries electrical current without providing
too much resistance to current flow.
Insulator - ANS ✔✔are materials that resist the flow of electricity.
Power - ANS ✔✔is the rate at which work is accomplished; it is
work or energy released divided by time.
The unit of power measurement that most individuals are
likely familiar with is horsepower.
One horsepower is equivalent to 746 watts power.
The electrical unit of power is the watt.
An electric circuit - ANS ✔✔is a continuous path along which an
electric current can flow.
A simple circuit is composed of a
power source
(e.g.,
battery or generator); the
load,
an electrical component
, or group of components that consume electricity (e.g., a
lamp or appliance); and a set of
conductors
that carry
current from the source to the load (e.g., wires).
Closed Circuit - ANS ✔✔is an uninterrupted path that allows a
continuous flow of current through an electrical circuit.
Open Circuit - ANS ✔✔If the path of current flow is interrupted such as if the
switch in a circuit is opened (turned off), an
open circuit
results
.
Short Circuit - ANS ✔✔If an inadvertent shortcut develops in a circuit that
permits current flow through an unintentional path, a
short circuit
is created.
Transformer - ANS ✔✔is an electrical
device that transfers an
alternating current and voltage
from one circuit to another
using the induction
phenomenon.
EXAM PREP & STUDY GUIDE 2026/2027
Conductor - ANS ✔✔carries electrical current without providing
too much resistance to current flow.
Insulator - ANS ✔✔are materials that resist the flow of electricity.
Power - ANS ✔✔is the rate at which work is accomplished; it is
work or energy released divided by time.
The unit of power measurement that most individuals are
likely familiar with is horsepower.
One horsepower is equivalent to 746 watts power.
The electrical unit of power is the watt.
An electric circuit - ANS ✔✔is a continuous path along which an
electric current can flow.
A simple circuit is composed of a
power source
(e.g.,
battery or generator); the
load,
an electrical component
, or group of components that consume electricity (e.g., a
lamp or appliance); and a set of
conductors
that carry
current from the source to the load (e.g., wires).
Closed Circuit - ANS ✔✔is an uninterrupted path that allows a
continuous flow of current through an electrical circuit.
Open Circuit - ANS ✔✔If the path of current flow is interrupted such as if the
switch in a circuit is opened (turned off), an
open circuit
results
.
Short Circuit - ANS ✔✔If an inadvertent shortcut develops in a circuit that
permits current flow through an unintentional path, a
short circuit
is created.
Transformer - ANS ✔✔is an electrical
device that transfers an
alternating current and voltage
from one circuit to another
using the induction
phenomenon.
