Basic Electrical
Open or Closed?
Your meter shows you 120V across a switch
What is Open
Air Proving switches in a gas fired furnace, while it is running, will be in what position?
What is closed position?
This is how Capacitors are rated
What is Microfarads
When energized, this device allows fuel to flow from Fuel Pump to Drawer Assembly
What is Oil Valve?
This device collects liquid refrigerant on suction line?
What is Suction Line Accumulator
Is a motor an "Inductive" or "Resistive" load?
What is an Inductive Load
3 basic types of ignition are:
What is Standing Pilot
What is Direct ignition
What is intermittent ignition
What kind of copper tubing is used for refrigeration and air conditioning applications?
What is ACR sized tubing?
How many grades of fuel are there?
What is 6?
Which valve would you use to manually pump a system down?
What is the King Valve?
This device amplifies your control amperage 10x
What is a 10 wire wrap?
What type of heat is removed in a secondary heat exchanger?
What is Latent Heat?
A residential A/C system that cools in the summer time and Heats in the Winter time by reversing its flow of refrigerant
What is a Heat Pump
Adding this to your oil tank can lower your pour point
What is Kerosene?
What is Hot?
What is the purpose of automatically pumping down?
What is prevent/avoid liquid refrigerant migration
What type of meter uses its own battery?
What is an Ohmmeter
Measurements that establish combustion efficiency
What are/is:
CO2
Net Stack
You record 3 degrees of Superheat at the evaporator outlet. You find that your blower motor is on Medium Speed. What speed would you switch to to try and fix this problem?
What is High Speed?
these kind of currents are created in square combustion chambers making them inefficient
What are Eddy Currents?
How many BTU's in 1 Ton of refrigeration?
What is 12000 BTUs
Single-Pole Contactor Coil De-Energized.
240V present across L1 and L2.
What is the Voltage reading across L1 and T1
What is the Voltage reading across L2 and T2
DOUBLE POINTS- BOTH MUST BE CORRECT
What is 0 volts
What is 240 volts
What is typically the max pressure for most furnaces
14"WC or 1/2psi
How do you measure TESP (Total External Static Pressure)?
What is checking return and supply air pressure with a manometer?
How many BTU's in 1 Gallon of Number 2 Fuel?
What is 140000 BTUs
What is called when you go from a Solid to a Vapor without the liquid state?
What is Sublimation?