Question

18. If the compression ratio for a 4-stage compressor is 3.6, what is the final pressure? a. 850 psia c. 1,890 psig b. 989 psia d. 2,469 psia 19. If the compression ratio for a 6-stage compressor is 4.0, what is the final pressure? a. 235.2 psia c. 60211 psia b. 3,763.2 psia d. 15,052.8 psia 20. Rotary screw compressors operate at speeds between a. 200 and 1,000 rpm c. 850 and 1,600 rpm b. 425 and 1,250 rpm d. 1750 and 3,600 rpm 21. A rotary screw compressor has a capacity rating of a. 4,500 CFM c. 12,000 CFM b. 8,000 CFM d. 16,000 CFM 22. Rotary screw compressors deliver pressures between a. 35-55 psig c. 100-130 psia b. 65-90 psia d. 120-160 psia 23. On a centrifugal compressor, the part of the impeller vane that comes into contact with the gas first is called the a. wear ring outlet c. impeller shroud b. suction eye d. suction vane tip 24. A liquid ring compressor can produce a vacuum of a. 12-16 inches of Hg c. 16-22 inches of Hg b. 27-29 inches of Hg d. 22-26 inches of Hg 25. All of the following are examples of turbine vibration except a. radial vibration c. inboard outboard bearing vibration b. axial vibration d. stem vibration 26. An automatic valve that regulates the amount of steam admitted into a turbine is called the a. steam regulator c. throttle valve b. overspeed trip d. governor valve 27. A safety device used to shut down a turbine when it exceeds rotational limits is called a a. overspeed trip c. throttle valve b. safety trip lever d. governor valve 28. A typical governing system is divided into all of the following parts except a. speed sensitive b. motion sensor amplifier to control valve c. hydraulic sensitive electronics d. control valve 29. The bearing that keeps the shaft from moving from side to side is called the a. thrust bearing c. radial bearing b. labyrinth bearing d. mechanical bearing

18. If the compression ratio for a 4-stage compressor is 3.6, what is the final pressure?
a. 850 psia
c. 1,890 psig
b. 989 psia
d. 2,469 psia
19. If the compression ratio for a 6-stage compressor is 4.0, what is the final pressure?
a. 235.2 psia
c. 60211 psia
b. 3,763.2 psia
d. 15,052.8 psia
20. Rotary screw compressors operate at speeds between
a. 200 and 1,000 rpm
c. 850 and 1,600 rpm
b. 425 and 1,250 rpm
d. 1750 and 3,600 rpm
21. A rotary screw compressor has a capacity rating of
a. 4,500 CFM
c. 12,000 CFM
b. 8,000 CFM
d. 16,000 CFM
22. Rotary screw compressors deliver pressures between
a. 35-55 psig
c. 100-130 psia
b. 65-90 psia
d. 120-160 psia
23. On a centrifugal compressor, the part of the impeller vane that comes into contact with the gas first is called the
a. wear ring outlet
c. impeller shroud
b. suction eye
d. suction vane tip
24. A liquid ring compressor can produce a vacuum of
a. 12-16 inches of Hg
c. 16-22 inches of Hg
b. 27-29 inches of Hg
d. 22-26 inches of Hg
25. All of the following are examples of turbine vibration except
a. radial vibration
c. inboard outboard bearing vibration
b. axial vibration
d. stem vibration
26. An automatic valve that regulates the amount of steam admitted into a turbine is called the
a. steam regulator
c. throttle valve
b. overspeed trip
d. governor valve
27. A safety device used to shut down a turbine when it exceeds rotational limits is called a
a. overspeed trip
c. throttle valve
b. safety trip lever
d. governor valve
28. A typical governing system is divided into all of the following parts except
a. speed sensitive
b. motion sensor amplifier to control valve
c. hydraulic sensitive electronics
d. control valve
29. The bearing that keeps the shaft from moving from side to side is called the
a. thrust bearing
c. radial bearing
b. labyrinth bearing
d. mechanical bearing

Added by Caroline V.

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