Properties of Matter
When this decreases, pressure and temperature increase
What is volume?
Heat that cause a change in temperature is called
What is sensible heat
Lightning is a form of this
What is static electricity?
If voltage is read across a fuse what does this indicate
The fuse is blown
This apparatus removes air, moisture, and other non-condensable gases from a system
What is a vacuum pump?
DAILY DOUBLE
What is a fluid
This refers to the measure of heat intensity
What is temperature?
This device protects a circuit from overload and/or short circuit?
What is a circuit breaker?
How could a technician determine if a solenoid valve coil is defective?
Disconnect and ohm it out for resistance
This is the process of removing refrigerant from a system and storing it in an approved cylinder
What is recovery?
This term refers to the weight of a one square inch
column of air on the Earth
What is atmospheric pressure
This refers to the amount of heat required to raise the temperature of 1 pound of a water 1 degree Fahrenheit
What is 1 BTU?
The flow of current in one direction at a continuous rate
What is direct current?
A hermetic compressor in a window A/C when energized does not start. Before determining that the compressor motor is bad, what should a technician check first?
What is the run capacitor?
The separating of zeotropic blends into its individual refrigerants during phase change is known as
What is fractionation?
This refers to anything that must be sealed in its container to prevent its escape into the atmosphere
What is a gas
This process involves:
heating, cooling, humidification, dehumidification, and air cleaning
What is air conditioning?
The push behind current is defined as
What is voltage?
Switches should be checked for
What is continuity?
DAILY DOUBLE
What are backseated, cracked, midseated, and frontseated?
This process is the changing of a substance from a vapor to a liquid
What is condensation
Exactly how much heat does it take to change 1 pound of water at 32 degrees to ice at 32 degrees?
What is 144 BTU?
Your local utility company charges its customers (you) by this
What is the kilowatt-hour?
You are on a service call, and the customer complains that she has no air. You go to the thermostat, and set the unit for cool, and the circuit breaker trips immediately. What is the first thing that you should check?
What is ohm out the compressor?(It is probably grounded)
In what year did Willis Carrier patent A/C and what was it first called
1908 / Apparatus for treating air