Compressors Chapter 17 Test Questions & Answers - Process Technology 2e Complete Test Bank by NAPTA. DOCX document preview.
Introduction to Process Technology (NAPTA)
Chapter 17 Compressors
1) What is the primary function of a compressor?
A) Regulate the pressure of gases for use in a facility
B) Increase the pressure of gases for use in a facility
C) Decrease the pressure of gases for use in a facility
D) Expand gases for use in a facility
Page Ref: 238
Objective: 17.1 Describe the purpose or function of compressors in the process industries
Blooms Level: Understand
2) What type of compressor uses speed, or kinetic energy, to increase the pressure of gases?
A) Dynamic compressors
B) Positive-displacement compressors
C) Process compressors
D) Accelerator compressors
Page Ref: 238
Objective: 17.1 Describe the purpose or function of compressors in the process industries
Blooms Level: Understand
3) Why are dynamic compressors more commonly used than positive-displacement compressors?
A) They have a smaller capacity
B) They are more readily available
C) They require less maintenance
D) They are more expensive
Page Ref: 238
Objective: 17.1 Describe the purpose or function of compressors in the process industries
Blooms Level: Understand
4) What is the opening of necessary valves in a piping system prior to placing a device in service?
A) Suction
B) Discharge
C) Line-up
D) Centrifugal
Page Ref: 238
Objective: 17.2 Explain the difference between a pump and a compressor in terms of what function each performs
Blooms Level: Understand
5) Which of the following is an example of a rotary compressor?
A) Scroll
B) Axial
C) Diaphragm
D) Centrifugal
Page Ref: 239
Objective: 17.2 Explain the difference between a pump and a compressor in terms of what function each performs
Blooms Level: Understand
6) Which of the following is an example of a reciprocating compressor?
A) Lobe
B) Screw
C) Liquid ring
D) Double-acting piston
Page Ref: 239
Objective: 17.2 Explain the difference between a pump and a compressor in terms of what function each performs
Blooms Level: Understand
7) What type of compressor uses screws, pistons, sliding vanes, lobes, gears, or diaphragms to deliver a set volume of gas with each stroke?
A) Dynamic
B) Centrifugal
C) Axial
D) Positive-displacement
Page Ref: 239
Objective: 17.3 Explain the difference between the two more common types of compressors used in the process industries: positive displacement and dynamic
Blooms Level: Understand
8) Which of the following is a category of positive-displacement compressors?
A) Axial
B) Rotary
C) Centrifugal
D) Dynamic
Page Ref: 239
Objective: 17.3 Explain the difference between the two more common types of compressors used in the process industries: positive displacement and dynamic
Blooms Level: Understand
9) What type of compressor uses a rotating motion to move gases?
A) Axial
B) Rotary
C) Reciprocating
D) Positive-displacement
Page Ref: 239
Objective: 17.4 Explain the differences between the rotary and reciprocating types of positive displacement compressors and their components
Blooms Level: Understand
10) Which of the following is a main component of a rotary compressor?
A) Lobe
B) Piston
C) Valves
D) Counterweight
Page Ref: 239
Objective: 17.4 Explain the differences between the rotary and reciprocating types of positive displacement compressors and their components
Blooms Level: Remember
11) What type of compressor uses the inward stroke of a piston or diaphragm to draw gas into a chamber (intake) and then positively displace the gas using an outward stroke (discharge)?
A) Axial
B) Rotary
C) Reciprocating
D) Positive-displacement
Page Ref: 240
Objective: 17.4 Explain the differences between the rotary and reciprocating types of positive displacement compressors and their components
Blooms Level: Understand
12) Which of the following is a main component of a reciprocating compressor?
A) Lobe
B) Gears
C) Vanes
D) Counterweight
Page Ref: 240
Objective: 17.4 Explain the differences between the rotary and reciprocating types of positive displacement compressors and their components
Blooms Level: Remember
13) What type of compressor is a dynamic compressor in which the gas flows from the inlet located near the suction eye to the outer tip of the impeller blade?
A) Dynamic
B) Centrifugal
C) Axial
D) Positive-displacement
Page Ref: 241
Objective: 17.5 Identify the primary parts and operations of typical dynamic compressors: centrifugal and axial
Blooms Level: Understand
14) What happens in a centrifugal compressor when the impeller spins?
A) It decreases the velocity of the gas
B) It increases the velocity of the gas
C) It stabilizes the velocity of the gas
D) It changes the structure of the gas
Page Ref: 241
Objective: 17.5 Identify the primary parts and operations of typical dynamic compressors: centrifugal and axial
Blooms Level: Understand
15) Why are centrifugal compressors the most common in process industries?
A) They deliver lower flow rates
B) They are more economical
C) They take up more space
D) They have a higher capacity
Page Ref: 241
Objective: 17.5 Identify the primary parts and operations of typical dynamic compressors: centrifugal and axial
Blooms Level: Understand
16) Which of the following is a main component of an axial compressor?
A) Impeller
B) Diffuser
C) Rotor blades
D) Housing
Page Ref: 242
Objective: 17.5 Identify the primary parts and operations of typical dynamic compressors: centrifugal and axial
Blooms Level: Understand
17) What occurs if the valves associated with the compressor are incorrectly closed or blocked?
A) Surging
B) Leakage
C) Overheating
D) Overpressurization
Page Ref: 244
Objective: 17.6 Discuss the hazards associated with the improper operation of both types of compressors
Blooms Level: Understand
18) Which of the following can cause a possible individual impact of retraining?
A) Leaks
B) Surging
C) Overheating
D) Rotating Equipment
Page Ref: 243
Objective: 17.6 Discuss the hazards associated with the improper operation of both types of compressors
Blooms Level: Understand
19) Which of the following can cause a possible equipment impact of high vibration?
A) Leaks
B) Surging
C) Overpressurization
D) Rotating Equipment
Page Ref: 244
Objective: 17.6 Discuss the hazards associated with the improper operation of both types of compressors
Blooms Level: Understand
20) What should process technicians routinely check when performing monitoring and maintenance activities?
A) Excess vibration
B) Low oil levels
C) High temperatures
D) All of the above
Page Ref: 245
Objective: 17.7 Describe the monitoring and maintenance activities associated with compressors
Blooms Level: Understand
21) Which of the following is the symbol for an axial compressor?
A)
B)
C)
D)
Page Ref: 245
Objective: 17.7 Describe the monitoring and maintenance activities associated with compressors
Blooms Level: Understand
22) Which of the following is the symbol for a rotary compressor?
A)
B)
C)
D)
Page Ref: 245
Objective: 17.7 Describe the monitoring and maintenance activities associated with compressors
Blooms Level: Understand