Question 1

Piston compressor pumps are available in single or multiple cylinder and single- or two-stage models.

Accepted Answer

Piston compressors, also known as reciprocating compressors, can be designed with single or multiple cylinders and can be configured as single-stage or two-stage models to meet various pressure and volume requirements.

Question 2

A(n) ____ is a hand valve that isolates the tank pressure from shop line pressure.

Accepted Answer

The air tank shutoff valve is designed to isolate the tank pressure from the shop line pressure, allowing for maintenance or system adjustments without affecting the entire system.

Question 3

Two-stage compressor units normally are used in pressure ranges up to 125 psi (861 kPa) for intermittent service.

Accepted Answer

Two-stage compressor units are typically used for higher pressure ranges, often above 100 psi, and are designed for more continuous, heavy-duty service rather than just intermittent service. They allow for more efficient compression by cooling the air between the stages.

Question 4

____ are provided for filling and changing air pump oil.

Accepted Answer

Compressor oil plugs are specifically designed for filling and changing air pump oil, allowing for maintenance and ensuring the air pump operates efficiently.

Question 5

Compressors indicate regulated air pressure and, in some cases, main line pressure as well.

Accepted Answer

The answer of Compressors indicate regulated air pressure and, in...

Question 6

Pounds per square inch (psi) is the measure of air pressure or force delivered by the compressor to the air tool.

Accepted Answer

PSI (pounds per square inch) is a unit of pressure used to quantify the amount of force exerted on a square inch of area, commonly used to measure the air pressure or force delivered by a compressor to an air tool.

Question 7

A(n) ____, mounted on the motor shaft, acts on the diaphragm plate to pull the diaphragm up and down.

Accepted Answer

An eccentric, mounted on the motor shaft, acts on the diaphragm plate to pull the diaphragm up and down. This is because an eccentric is designed to convert the rotary motion of the shaft into a linear motion, which is necessary to move the diaphragm.

Question 8

The intake air filter located on the compressor inlet is very important because all the air going into the compressor passes through this filter.

Accepted Answer

The intake air filter on the compressor inlet is crucial because it cleans the air entering the compressor, preventing contaminants from damaging the compressor and downstream components.

Question 9

If the cfm of a compressor is too low for demand, the pump will not be able to keep up.

Accepted Answer

If the cubic feet per minute (cfm) rating of a compressor is too low for the demand, the pump will not be able to supply enough air, leading to insufficient performance for the intended application.

Question 10

____ is the theoretical amount of air in cubic feet that the compressor can pump in one minute.

Accepted Answer

Displacement refers to the volume of air a compressor can move over a specific period, typically measured in cubic feet per minute (CFM), indicating the theoretical amount of air it can pump in one minute.

Question 11

An adapter is usually made up of an electric motor, air pump, and large air storage tank.

Accepted Answer

An adapter typically refers to a device that converts attributes of one electrical device or system to those of an otherwise incompatible device or system. It does not consist of an electric motor, air pump, and large air storage tank.

Question 12

An automatic dump trap, installed at the lowest point below the air receiver, collects condensed moisture.

Accepted Answer

An automatic dump trap installed at the lowest point below the air receiver is designed to collect condensed moisture that accumulates from the cooling of compressed air, ensuring it is properly drained and does not re-enter the air system.

Question 13

Which of the following is LEAST-Likely to be considered a type of air compressor?

Accepted Answer

The filter type is not a type of air compressor; rather, it is a component used in conjunction with air compressors to clean the air. The rotary screw, piston, and diaphragm types are all common types of air compressors, each utilizing a different mechanism to compress air.

Question 14

The ____ is designed to raise the pressure of air from normal atmospheric to some higher pressure.

Accepted Answer

An air compressor is specifically designed to increase the pressure of air from atmospheric levels to a higher pressure, making it the correct choice for this function.

Question 15

The ____ is a heavy-gauge steel tank for holding an extra supply of compressed air.

Accepted Answer

The compressor air tank is designed to hold an extra supply of compressed air, typically made from heavy-gauge steel to withstand the high pressure.

Question 16

A compressor air valve on the bottom of the tank allows for water to be drained off.

Accepted Answer

The answer of A compressor air valve on the bottom...

Question 17

Two-stage compressors are usually more efficient, run cooler, and deliver more air for the power consumed, particularly in the 100 to 200 psi (689 to 1,378 kPa) pressure range.

Accepted Answer

Two-stage compressors are more efficient because they cool the air between the stages, reducing the work needed to compress it further. This leads to cooler operation and more air delivery for the power consumed, especially in the specified pressure range.

Question 18

All of the following are components of a typical two-stage compressor EXCEPT:

Accepted Answer

The filter is not a component specific to a two-stage compressor; it is a general component used in various types of compressors for cleaning the air or gas entering the system.

Question 19

____ is the volume of the air being delivered by the compressor to the air tool.

Accepted Answer

Cubic feet per minute (CFM) is the correct unit for measuring the volume of air delivered by a compressor to an air tool.

Question 20

In a compressor, ____ is the capacity of the motor or engine that drives the compressor.

Accepted Answer

Horsepower is the measure of the power of the motor or engine that drives the compressor, indicating its capacity to perform work.

Quiz 7: Compressed Air System Technology