The difference between residential heating and cooling systems and commercial/industrial heating, cooling, or refrigerating facilities is:
A) Whether the equipment or system is in a home or in a business.
B) The amount of energy the building or facility uses.
C) The size of the building or facility.
D) The number of people that occupy the building or facility.
A
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The carbon content of machine steel for gages usually ranges from 0.15% to 0.25%. What is the minimum weight of carbon in 300 kilograms of machine steel?
A. 15 B. 75 C. 2,000 D. 45
Technician A says that during a one-wheel spinout on a tandem drive tractor, the spinning wheel can rotate up to four times faster than the all-four wheel equivalent when torque is properly divided. Technician B says that when a spinning wheel finds traction after a spinout, the drivetrain is shock-loaded. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
How does excess air affect the vent gas CO2 percentage?
A) Excess air completely eliminates CO2 in the vent gas B) Excess air reduces the vent gas CO2 percentage C) Excess air increases the vent gas CO2 percentage D) Excess air has no effect on vent gas CO2 percentage
What is a common cause of repeated shock absorber failures on a trailer with an air suspension?
A. poor quality shocks B. improper leveling valve ride height C. wheel ends out-of-balance D. overloading