How do you calculate the temperature difference when determining the CFM for a gas furnace? By using a two -channel thermometer in the supply and return air plenums of the furnace, then subtracting the measured return air temperature from the measured supply air temperature By adding the supply air and return air temperatures measured using a two-channel thermometer within the supply and return air plenums at the gas furnace Subtracting the return air temperature from the outside temperature, measured using a digital thermometer By adding the return air temperature from the outside temperature, measured using a digital thermometer

How might an electric motor be used in a washing machine? A To make water flow into the machine B To make the machine spin C To add the correct amount of soap D To make water drain out of the machine at the end of the cycle

Structural wood panels made of layers of veneer glued together at 90 degrees to one another: composit panels particle board Plywood OSB

What determines the maximum fuel outlet pressure from a mechanical diaphragm pump? a. Fuel line restriction b. Engine rpm c. Spring force d. Return check valve

How can a process technician prevent a dust explosion? A Remove moisture B Add moisture C Open a window D Keep particles in a contained area

A pressure switch is rated according to its __ pressure range. operating resting maximum minimum

Q1: Which of the following steps are NOT part of a transfer case fluid inspection? 1. Locate the oil fill plug on the transfer case and remove it using air tools. 2. Use your finger to check the oil level in the fill plug hole. 3. Add the correct amount and type of fluid if necessary. 4. Reinstall the transfer case fill plug hole and tighten to specification.

You need to install a pull box in a run of conduit.The conduit contains twenty 18 AWG wires . What is the minimum size $4''$ square box you could use? Use the following table to determine the MINIMUM size $4''$ square box required.

Pipe wrenches usually come in different sizes which are located: It doesn't matter what size the wrench is it'll work anyways. On the side of the wrench. On the internet.

A-CAC melts the base metal with a high-current electric arc between the base metal and the end of a(n) __ a) high-frequency pilot arc b) idle arc c) carbon-graphite electrode d) plasma jet

The electronic variable displacemen compressor is based on what type of compressor design? A Rotary compressor design B Swash plate compressor design C Scroll compressor design D Vane compressor design