Study Assistant A (MowExA)

The normal procedure used when checking out electrical circuits, is to connect the:

• Voltmeter and ammeter in series

• Voltmeter and ammeter in parallel

• Voltmeter in parallel and the ammeter in series

• Voltmeter in series and the ammeter in parallel

The instrument used to obtain air velocity values is the:

• Pedometer

• Hydrometer

• Anemometer

• Odometer

When required to cut capillary tubing, a mechanic should use a:

• Side wheel cutter

• File

• Hacksaw

• Tube cutter

Devices using water columns for measuring small pressures above or below atmospheric pressure, as in air ducts or gas lines are called:

• Manometers

• Barometers

• Micrometers

• Thermometers

Which of the following gauges would you use, to check a leaky discharge valve in an compressor head?

• Compound gauge

• Head gauge

• High pressure gauge

• Non condensible gas

A ton of refrigeration or air conditioning capacity is equal to:

• 200 British Thermal Units in one hour

• 1,200 British Thermal Units in one hour

• 144,000 British Thermal Units in one day

• 12,000 British Thermal Units in one hour

Enthalpy is:

• All of the answers apply to the question

• The entropy less the temperature

• Sensible heat less latent heat

• The heat content of a substance

If a liquid vapour refrigerant mixture has a quality of 75%, it is:

• Saturated

• Superheated

• Mostly vapour

• Mostly liquid

Which of the following is the Rankine Scale for absolute zero?

• -273

• -460

• -100

• 0

If air has a specific volume of 14 cu. ft./lb., what is its density?

• 0.625 lbs./cu. ft.

• 0.0714 lbs./cu. ft.

• 0.7 lbs./cu. ft.

• 1.4 lbs./cu. ft.