Review Questions and Answers 100%
Pass
alternating - Correct Answers: ____ current is current that reverses its direction of flow at regular
intervals.
voltage - Correct Answers: ____ is the amount of electrical pressure that causes electrons to move in a
circuit.
amperes - Correct Answers: Current is measured in ____.
OCPD - Correct Answers: A(n) ____ is a device that automatically opens a circuit to prevent damage
from a high-current condition.
contact - Correct Answers: A(n) ____ is the conducting part of a switch that operates with another
conducting part to complete (close) or break (open) a circuit.
relay - Correct Answers: A(n) ____ is an electrical switch that is actuated by a separate circuit.
open - Correct Answers: A(n) ____ circuit is a circuit having an incomplete path, which prevents current
flow.
resistance - Correct Answers: ____ is the opposition to the flow of electrons.
conductor - Correct Answers: A(n) ____ is a material that has little resistance and permits electrons to
move through it easily.
arcing - Correct Answers: ____ is the discharge of an electric current across a gap.
short - Correct Answers: A(n) ____ circuit is an undesirable, low-resistance path for current to leave the
normal current-carrying path through a load.
, series - Correct Answers: A(n) ____ circuit is a circuit that has two or more components connected such
that there is only one path for current flow.
insulator - Correct Answers: ____ is a material that has a high resistance.
closed - Correct Answers: A(n) ____ circuit is a circuit having a complete path for current flow.
ground - Correct Answers: A(n) ____ circuit is a conducting connection between electrical equipment
and the earth.
evaporator - Correct Answers: A(n) ____ is a heat exchanger through which heat is transferred to the
low-pressure refrigerant liquid.
thermostat - Correct Answers: A(n) ____ is a temperature sensor inside a temperature-controlled space
that sends signals to a control system in order to maintain a set temperature.
air-cooled - Correct Answers: ____ condensers are the most common condensers used in refrigeration
systems.
latent - Correct Answers: ____ heat is heat energy that causes a change of state but no temperature
change.
condenser - Correct Answers: A(n) ____ is a heat exchanger that removes heat from high-pressure
refrigerant vapor.
recovery - Correct Answers: Refrigerant ____ is the process of removing refrigerant from a system and
capturing it in a recovery cylinder, with no cleaning of refrigerant.
15 - Correct Answers: A low-pressure boiler is a boiler that has an MAWP of up to ____ psi.
Pass
alternating - Correct Answers: ____ current is current that reverses its direction of flow at regular
intervals.
voltage - Correct Answers: ____ is the amount of electrical pressure that causes electrons to move in a
circuit.
amperes - Correct Answers: Current is measured in ____.
OCPD - Correct Answers: A(n) ____ is a device that automatically opens a circuit to prevent damage
from a high-current condition.
contact - Correct Answers: A(n) ____ is the conducting part of a switch that operates with another
conducting part to complete (close) or break (open) a circuit.
relay - Correct Answers: A(n) ____ is an electrical switch that is actuated by a separate circuit.
open - Correct Answers: A(n) ____ circuit is a circuit having an incomplete path, which prevents current
flow.
resistance - Correct Answers: ____ is the opposition to the flow of electrons.
conductor - Correct Answers: A(n) ____ is a material that has little resistance and permits electrons to
move through it easily.
arcing - Correct Answers: ____ is the discharge of an electric current across a gap.
short - Correct Answers: A(n) ____ circuit is an undesirable, low-resistance path for current to leave the
normal current-carrying path through a load.
, series - Correct Answers: A(n) ____ circuit is a circuit that has two or more components connected such
that there is only one path for current flow.
insulator - Correct Answers: ____ is a material that has a high resistance.
closed - Correct Answers: A(n) ____ circuit is a circuit having a complete path for current flow.
ground - Correct Answers: A(n) ____ circuit is a conducting connection between electrical equipment
and the earth.
evaporator - Correct Answers: A(n) ____ is a heat exchanger through which heat is transferred to the
low-pressure refrigerant liquid.
thermostat - Correct Answers: A(n) ____ is a temperature sensor inside a temperature-controlled space
that sends signals to a control system in order to maintain a set temperature.
air-cooled - Correct Answers: ____ condensers are the most common condensers used in refrigeration
systems.
latent - Correct Answers: ____ heat is heat energy that causes a change of state but no temperature
change.
condenser - Correct Answers: A(n) ____ is a heat exchanger that removes heat from high-pressure
refrigerant vapor.
recovery - Correct Answers: Refrigerant ____ is the process of removing refrigerant from a system and
capturing it in a recovery cylinder, with no cleaning of refrigerant.
15 - Correct Answers: A low-pressure boiler is a boiler that has an MAWP of up to ____ psi.
