Posttest physics part 1

At high altitudes, the flow of a gas through a rotameter will be

• Greater than expected

• Less than expected

• Less than expected at high flows but greater than expected at low flows

• Greater than expected at high flows but accurate at low flows

The pin-index safety system is designed to prevent the incorrect connection of what to the anesthesia machine?

• Scavenger unit

• Gas cylinder

• Flow meter

• Pipeline supply

A desiccated Baralyme absorber can combine with desflurane to form what toxic byproduct?

• Carbon monoxide

• Barium hydroxide

• Compound A

• Sodium hydroxide

Continuous wave Doppler is a modality of ultrasound that is best used for:

• Generating high-resolution images

• Measuring distances of far-away objects

• Measuring velocities of objects in motion

• Resolving issues with range ambiguity

Doubling which of the following would have the greatest effect on flow through a tube?

• Viscosity of a gas

• Length of tubing

• Radius of the tube

• Pressure differential

Which property of oxygen is detected by the fail-safe device on the anesthesia machine?

• Concentration

• Pressure

• Flow

• Partial pressure

Which of the following malfunctions causes the line isolation monitor to alarm?

• Total electrical current exceeding circuit capacity

• Surge of current in the main power supply

• Interruption of current to electrical outlets caused by a circuit breaker

• Flow of current to ground in the isolated circuit

Frost develops on the outside of an N2O compressed-gas cylinder during general anesthesia. This phenomenon indicates that

• The saturated vapor pressure of N2O within the cylinder is rapidly increasing

• The cylinder is almost empty

• There is a rapid transfer of heat to the cylinder

• The flow of N2O from the cylinder into the anesthesia machine is rapid