MCQ About The Compressed Air System

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Table of Contents

#1. What is the primary function of an air compressor?

a) To cool down compressed air

b) To purify the air for breathing

c) To increase the pressure of air

d) To decrease the volume of air

#2. Which unit is commonly used to measure the flow rate of compressed air?

a) Cubic meters per second (m³/s)

b) Gallons per minute (GPM)

c) Kilograms per square centimeter (kg/cm²)

d) Pascals (Pa)

#3. What is the purpose of an air receiver tank in a compressed air system?

a) To cool down the compressed air

b) To store compressed air and regulate pressure

c) To filter out impurities from the air

d) To decrease the humidity of the air

#4. Which type of compressor uses a piston and cylinder arrangement to compress air?

a) Centrifugal compressor

b) Screw compressor

c) Reciprocating compressor

d) Axial compressor

#5. Which compressor type is known for its high efficiency, compact design, and low maintenance requirements?

a) Centrifugal compressor

b) Reciprocating compressor

c) Scroll compressor

d) Diaphragm compressor

#6. Which compressor is commonly used in large industrial applications and gas pipelines due to its continuous flow capacity?

a) Reciprocating compressor

b) Screw compressor

c) Diaphragm compressor

d) Scroll compressor

#7. What is the main advantage of an oil-free compressor?

a) Lower initial cost

b) Higher efficiency

c) Reduced maintenance

d) Simpler installation

#8. What does the term “CFM” stand for in the context of air compressors?

a) Compressed Filter Media

b) Cubic Foot per Minute

c) Compressor Flow Meter

d) Coolant Flow Management

#9. Which compressor type uses rotating impellers to accelerate and compress air?

a) Reciprocating compressor

b) Screw compressor

c) Centrifugal compressor

d) Diaphragm compressor

#10. Which technical specification indicates the maximum pressure a compressor can deliver?

a) Horsepower (HP)

b) Displacement (CFM)

c) Duty cycle

d) Maximum PSI (Pounds per Square Inch)

#11. Which compressor type is suitable for applications requiring high pressures and low flow rates?

a) Centrifugal compressor

b) Reciprocating compressor

c) Axial compressor

d) Scroll compressor

#12. What is the purpose of an aftercooler in a compressed air system?

a) To cool down the ambient air

b) To filter out oil and contaminants

c) To regulate the pressure of the compressed air

d) To cool down the compressed air and remove moisture

#13. What is the primary reason for using air dryers in a compressed air system?

a) To increase the pressure of the compressed air

b) To decrease the temperature of the compressed air

c) To remove impurities and contaminants from the compressed air

d) To reduce the moisture content of the compressed air

#14. Why is maintaining a low dew point important in pharmaceutical applications?

a) To prevent contamination of the compressed air

b) To increase the energy efficiency of the compressor

c) To reduce the pressure drop in the system

d) To increase the flow rate of compressed air

#15. Which type of air dryer uses a desiccant material to absorb moisture from the compressed air?

a) Refrigerated air dryer

b) Membrane air dryer

c) Heatless regenerative air dryer

d) Deliquescent air dryer

#16. In pharmaceutical applications, what is the typical ISO class for compressed air quality?

a) ISO 8573-1:2010 Class 4.3.2

b) ISO 8573-1:2010 Class 5.4.3

c) ISO 8573-1:2010 Class 1.1.1

d) ISO 8573-1:2010 Class 8.7.6

#17. What does ISO 8573-1:2010 Class 1 represent in terms of compressed air quality?

a) Solid particulate content

b) Oil vapor content

c) Water vapor content

d) Microbial contamination

#18. Which of the following is a potential source of contamination in compressed air systems used in pharmaceuticals?

a) Oxygen content

b) Nitrogen content

c) Hydrocarbon content

d) Carbon dioxide content

#19. What is the ideal dew point for pharmaceutical compressed air systems to prevent moisture-related issues?

a) -20°C (-4°F)

b) 0°C (32°F)

c) 3°C (37.4°F)

d) 10°C (50°F)

#20. Which ISO class specifies the maximum allowable particle concentration in compressed air used in pharmaceutical manufacturing?

a) ISO 8573-1:2010 Class 4

b) ISO 8573-1:2010 Class 2

c) ISO 8573-1:2010 Class 1

d) ISO 8573-1:2010 Class 3

#21. What is the main disadvantage of using a refrigerated air dryer in a compressed air system?

a) High initial cost

b) High energy consumption

c) Limited effectiveness in high-humidity conditions

d) Incompatibility with oil-lubricated compressors

#22. What is the formula to calculate the dew point temperature from the relative humidity and ambient temperature?

a) Dew Point (°C) = Ambient Temperature (°C) - Relative Humidity (%)

b) Dew Point (°C) = Ambient Temperature (°C) + Relative Humidity (%)

c) Dew Point (°C) = Ambient Temperature (°C) / Relative Humidity (%)

d) Dew Point (°C) = Relative Humidity (%) - Ambient Temperature (°C)

#23. Which formula is used to calculate the “specific humidity” of air?

a) Specific Humidity = Mass of Water Vapor / Mass of Dry Air

b) Specific Humidity = Mass of Dry Air / Mass of Water Vapor

c) Specific Humidity = Relative Humidity / Ambient Temperature

d) Specific Humidity = Dew Point Temperature / Ambient Temperature

#24. What is the typical limit for “total oil content” in compressed air quality for pharmaceutical applications (ISO 8573-1:2010)?

a) Class 1 (0.01 mg/m³)

b) Class 2 (0.1 mg/m³)

c) Class 3 (1 mg/m³)

d) Class 4 (5 mg/m³)

#25. Which equation can be used to calculate the “relative humidity” (RH) of air given the specific humidity and saturation specific humidity?

a) RH = Absolute Humidity / Specific Humidity

b) RH = Saturation Specific Humidity / Specific Humidity

c) RH = Specific Humidity / Saturation Specific Humidity

d) RH = Specific Humidity × Saturation Specific Humidity

Finish

Results

#1. What is the primary function of an air compressor?

#2. Which unit is commonly used to measure the flow rate of compressed air?

#3. What is the purpose of an air receiver tank in a compressed air system?

#4. Which type of compressor uses a piston and cylinder arrangement to compress air?

#5. Which compressor type is known for its high efficiency, compact design, and low maintenance requirements?

#6. Which compressor is commonly used in large industrial applications and gas pipelines due to its continuous flow capacity?

#7. What is the main advantage of an oil-free compressor?

#8. What does the term “CFM” stand for in the context of air compressors?

#9. Which compressor type uses rotating impellers to accelerate and compress air?

#10. Which technical specification indicates the maximum pressure a compressor can deliver?

#11. Which compressor type is suitable for applications requiring high pressures and low flow rates?

#12. What is the purpose of an aftercooler in a compressed air system?

#13. What is the primary reason for using air dryers in a compressed air system?

#14. Why is maintaining a low dew point important in pharmaceutical applications?

#15. Which type of air dryer uses a desiccant material to absorb moisture from the compressed air?

#16. In pharmaceutical applications, what is the typical ISO class for compressed air quality?

#17. What does ISO 8573-1:2010 Class 1 represent in terms of compressed air quality?

#18. Which of the following is a potential source of contamination in compressed air systems used in pharmaceuticals?

#19. What is the ideal dew point for pharmaceutical compressed air systems to prevent moisture-related issues?

#20. Which ISO class specifies the maximum allowable particle concentration in compressed air used in pharmaceutical manufacturing?

#21. What is the main disadvantage of using a refrigerated air dryer in a compressed air system?

#22. What is the formula to calculate the dew point temperature from the relative humidity and ambient temperature?

#23. Which formula is used to calculate the “specific humidity” of air?

#24. What is the typical limit for “total oil content” in compressed air quality for pharmaceutical applications (ISO 8573-1:2010)?

#25. Which equation can be used to calculate the “relative humidity” (RH) of air given the specific humidity and saturation specific humidity?

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Results

#1. What is the primary function of an air compressor?

#2. Which unit is commonly used to measure the flow rate of compressed air?

#3. What is the purpose of an air receiver tank in a compressed air system?

#4. Which type of compressor uses a piston and cylinder arrangement to compress air?

#5. Which compressor type is known for its high efficiency, compact design, and low maintenance requirements?

#6. Which compressor is commonly used in large industrial applications and gas pipelines due to its continuous flow capacity?

#7. What is the main advantage of an oil-free compressor?

#8. What does the term “CFM” stand for in the context of air compressors?

#9. Which compressor type uses rotating impellers to accelerate and compress air?

#10. Which technical specification indicates the maximum pressure a compressor can deliver?

#11. Which compressor type is suitable for applications requiring high pressures and low flow rates?

#12. What is the purpose of an aftercooler in a compressed air system?

#13. What is the primary reason for using air dryers in a compressed air system?

#14. Why is maintaining a low dew point important in pharmaceutical applications?

#15. Which type of air dryer uses a desiccant material to absorb moisture from the compressed air?

#16. In pharmaceutical applications, what is the typical ISO class for compressed air quality?

#17. What does ISO 8573-1:2010 Class 1 represent in terms of compressed air quality?

#18. Which of the following is a potential source of contamination in compressed air systems used in pharmaceuticals?

#19. What is the ideal dew point for pharmaceutical compressed air systems to prevent moisture-related issues?

#20. Which ISO class specifies the maximum allowable particle concentration in compressed air used in pharmaceutical manufacturing?

#21. What is the main disadvantage of using a refrigerated air dryer in a compressed air system?

#22. What is the formula to calculate the dew point temperature from the relative humidity and ambient temperature?

#23. Which formula is used to calculate the “specific humidity” of air?

#24. What is the typical limit for “total oil content” in compressed air quality for pharmaceutical applications (ISO 8573-1:2010)?

#25. Which equation can be used to calculate the “relative humidity” (RH) of air given the specific humidity and saturation specific humidity?

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