Pipe�tter Star Exam Part 1
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1. Violent ashing and collapsing of vapor bubbles in a centrifugal pump is
called.: Cavitation
2. Device that controls the pressure in a low pressure steam boiler: Pressuretrol
3. Function of an evaporator: Absorb heat from the system
4. Metal which has a high iron content: ferrous
5. Why should the angle between the leg of a swing and the load never be less
than 30 degrees?: More stress loads are applied on the sling
6. What are two kinds of misalignment that must be checked for when installing
pumps?: Parallel and angular alignment
7. What is the function of a compressor?: Create �ow in the system
8. After �ttings and tubes are cleaned and uxed, they should be assembled and
soldered: As soon as possible
9. The relief valve is sized to the ________ rating of a boiler: Gross Output
10. Four types of copper tube joints: Soldered, Brazed, Flared, Compression
11. Most common hanger type: Clevis
12. Which hitch can support the most weight?: Basket Hitch
13. Minimum safe working distance for overhead power lines: 10 feet
14. Three basic hitches which can be used for lifting with a sling: Straight, Choker, Basket
15. Amount of heat required to bring about a change in a state in a substance-
: Latent heat
16. Harmful products of incomplete combustion: Carbon Monoxide & Aldehydes
17. Regulating or throttling ow is done with: Globe
18. 4 main components in a refrigeration system: Compressor, Condenser, Evaporator, Metering
device.
19. Quanting of heat involved to change a substance that can be measured with
a thermometer: Sensible heat
20. Main advantage of a uidized bed boiler: Low SO & NOx emissions
21. Two basic types of low-water cuto s: Float type and electric probe
22. Measurement unit used to express rate of ow: Velocity
23. Weakest part of a chain hoist: Lower Hook
24. Four principle functions of valves: Start/Stop, Regulate/Throttle, Relief, Reduce
25. Oxyacetylene ame has a peak temperature of approximately: 6300
, Pipe�tter Star Exam Part 1
Study online at https://quizlet.com/_5817bg
26. Float and thermostatic trap rises to discharge: Condensate
27. Vapor heated above its corresponding saturation temperature with no
change in pressure: Superheated
28. Magnetic �eld around a current carrying wire: Exists at all points long its length
29. How many feet can a pump raise water vertically by suction: 34 feet
30. What steps should be taken before starting a pump for the �rst time: Prime,
Check suction and discharge valves, Check rotation
31. Constant used to �nd o set or advance with 45 degree o set: .707
32. Pressure is: force per unit of area
33. Never expose any part of a compressed gas cylinder to temps above: 125 F
34. What must be check on a boiler before putting it on line for the �rst time?: -
Safety relief valve
35. An increase in pressure will cause the boiling temperature of a liquid to: In-
crease
36. Function of a metering device in refrigeration: Regulates the �ow of refrigerant
37. What is the function of a condeser: Reject heat from the refrigerant
38. Portion of the boiler which increaes the temperature of the steam so that it
doesn't condense in the turbine: Reheater
39. What percent of electricity is produced from power plants using steam?: 90%
40. Two basic types of check valves: Lift and Swing
41. Maximum recommended service temperature of a brazed joint: 350 F
42. Generates a small amount of voltage when heated: Thermocouple
43. Work is de�ned as: force times distance
44. Two main classi�cations of pumps: Positive Displacement and Non-positive displacement
45. Thermostatic traps are opened and closed by: �exible bellows
46. In a oat and thermostatic trap the oat rises to discharge: Condensate
47. Current polarity becomes an important factor with ______ power sources: All
DC
48. DCRP (electrode positive) is produced when the electrode is connected to the
______ terminal of the welding power: Positive
49. In a constant current welding power source, the welding current remains
relatively constant despite changes in: Arc Length
Study online at https://quizlet.com/_5817bg
1. Violent ashing and collapsing of vapor bubbles in a centrifugal pump is
called.: Cavitation
2. Device that controls the pressure in a low pressure steam boiler: Pressuretrol
3. Function of an evaporator: Absorb heat from the system
4. Metal which has a high iron content: ferrous
5. Why should the angle between the leg of a swing and the load never be less
than 30 degrees?: More stress loads are applied on the sling
6. What are two kinds of misalignment that must be checked for when installing
pumps?: Parallel and angular alignment
7. What is the function of a compressor?: Create �ow in the system
8. After �ttings and tubes are cleaned and uxed, they should be assembled and
soldered: As soon as possible
9. The relief valve is sized to the ________ rating of a boiler: Gross Output
10. Four types of copper tube joints: Soldered, Brazed, Flared, Compression
11. Most common hanger type: Clevis
12. Which hitch can support the most weight?: Basket Hitch
13. Minimum safe working distance for overhead power lines: 10 feet
14. Three basic hitches which can be used for lifting with a sling: Straight, Choker, Basket
15. Amount of heat required to bring about a change in a state in a substance-
: Latent heat
16. Harmful products of incomplete combustion: Carbon Monoxide & Aldehydes
17. Regulating or throttling ow is done with: Globe
18. 4 main components in a refrigeration system: Compressor, Condenser, Evaporator, Metering
device.
19. Quanting of heat involved to change a substance that can be measured with
a thermometer: Sensible heat
20. Main advantage of a uidized bed boiler: Low SO & NOx emissions
21. Two basic types of low-water cuto s: Float type and electric probe
22. Measurement unit used to express rate of ow: Velocity
23. Weakest part of a chain hoist: Lower Hook
24. Four principle functions of valves: Start/Stop, Regulate/Throttle, Relief, Reduce
25. Oxyacetylene ame has a peak temperature of approximately: 6300
, Pipe�tter Star Exam Part 1
Study online at https://quizlet.com/_5817bg
26. Float and thermostatic trap rises to discharge: Condensate
27. Vapor heated above its corresponding saturation temperature with no
change in pressure: Superheated
28. Magnetic �eld around a current carrying wire: Exists at all points long its length
29. How many feet can a pump raise water vertically by suction: 34 feet
30. What steps should be taken before starting a pump for the �rst time: Prime,
Check suction and discharge valves, Check rotation
31. Constant used to �nd o set or advance with 45 degree o set: .707
32. Pressure is: force per unit of area
33. Never expose any part of a compressed gas cylinder to temps above: 125 F
34. What must be check on a boiler before putting it on line for the �rst time?: -
Safety relief valve
35. An increase in pressure will cause the boiling temperature of a liquid to: In-
crease
36. Function of a metering device in refrigeration: Regulates the �ow of refrigerant
37. What is the function of a condeser: Reject heat from the refrigerant
38. Portion of the boiler which increaes the temperature of the steam so that it
doesn't condense in the turbine: Reheater
39. What percent of electricity is produced from power plants using steam?: 90%
40. Two basic types of check valves: Lift and Swing
41. Maximum recommended service temperature of a brazed joint: 350 F
42. Generates a small amount of voltage when heated: Thermocouple
43. Work is de�ned as: force times distance
44. Two main classi�cations of pumps: Positive Displacement and Non-positive displacement
45. Thermostatic traps are opened and closed by: �exible bellows
46. In a oat and thermostatic trap the oat rises to discharge: Condensate
47. Current polarity becomes an important factor with ______ power sources: All
DC
48. DCRP (electrode positive) is produced when the electrode is connected to the
______ terminal of the welding power: Positive
49. In a constant current welding power source, the welding current remains
relatively constant despite changes in: Arc Length
