Millwright - 3rd Year - Compressor
Fundamentals Exam Questions and
Answers 100% score Latest update
2026
1. True or false. The two main classifications of compressors are
dynamic and positive displacement. -
correct answer ✅1. True
2. True or false. Double-acting compressors compress the gas on
both sides of the piston. -
correct answer ✅2. True
3. List the two reciprocating compressors that are particularly
suited to oil-free air delivery. -
correct answer ✅3. Labyrinth and diaphragm.
4. True or false. A rotary screw compressor is considered to belong
to the centrifugal compressor category. -
correct answer ✅4. False
5. True or false. A centrifugal flow compressor uses alternating rows
of rotor and stator blades to move the gas axially through the
compressor. -
correct answer ✅5. False
, Millwright - 3rd Year - Compressor
Fundamentals Exam Questions and
Answers 100% score Latest update
2026
6. True or false. Zero degrees Kelvin is equal to -273 degrees
Celsius. -
correct answer ✅6. True
7. Atmospheric pressure at sea level is equal to how many of each
of the following: a) bar b) psi c) kPa -
correct answer ✅7. a) 1 bar b) 14.7 psi c) 101.3 kPa
8. True or false. Gauge pressure is calculated by adding 14.7 to an
absolute scale reading. -
correct answer ✅8. False
9. Compressed air operates in much the same manner as oil in a
hydraulic system except for two major differences. What are these
two differences? -
correct answer ✅9. Gases are compressible. Gases expand to fill
any container.
Fundamentals Exam Questions and
Answers 100% score Latest update
2026
1. True or false. The two main classifications of compressors are
dynamic and positive displacement. -
correct answer ✅1. True
2. True or false. Double-acting compressors compress the gas on
both sides of the piston. -
correct answer ✅2. True
3. List the two reciprocating compressors that are particularly
suited to oil-free air delivery. -
correct answer ✅3. Labyrinth and diaphragm.
4. True or false. A rotary screw compressor is considered to belong
to the centrifugal compressor category. -
correct answer ✅4. False
5. True or false. A centrifugal flow compressor uses alternating rows
of rotor and stator blades to move the gas axially through the
compressor. -
correct answer ✅5. False
, Millwright - 3rd Year - Compressor
Fundamentals Exam Questions and
Answers 100% score Latest update
2026
6. True or false. Zero degrees Kelvin is equal to -273 degrees
Celsius. -
correct answer ✅6. True
7. Atmospheric pressure at sea level is equal to how many of each
of the following: a) bar b) psi c) kPa -
correct answer ✅7. a) 1 bar b) 14.7 psi c) 101.3 kPa
8. True or false. Gauge pressure is calculated by adding 14.7 to an
absolute scale reading. -
correct answer ✅8. False
9. Compressed air operates in much the same manner as oil in a
hydraulic system except for two major differences. What are these
two differences? -
correct answer ✅9. Gases are compressible. Gases expand to fill
any container.
