Test your basic knowledge |

Plumbing Certification

Subject : certifications
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A gallon of water weighs...






2. How often should the atmosphere be tested in a confined space?






3. What are the three types of steam traps?






4. The type of drawing that views a building by looking directly at the front - top and side is referred to as a/an ___________ drawing.






5. Both soldered and brazed joints are made by heating a properly prepared joint to the proper temperature and the flowing of a filler metal by means of...






6. How do you determine gear ratios?

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7. What is the formula to figure the area of a circle?






8. The maximum practical suction lift on positive displacement pumps is 22 feet and on centrifugal pumps it is __________ feet.






9. A condensate receiver is used when...






10. To determine the set on a 45 degree offset you would multiply the travel by...






11. The smallest nominal size DWV copper tube is...

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12. What is the formula to calculate thermal expansion?

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13. Soldered joints should never be used on systems above...






14. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...






15. Which component in a closed control loop is the primary element?






16. With a high pressure valve you should never _____ under pressure.






17. What is on the low side of the vapor compression cycle?






18. When should you ream the end of a pipe?






19. A mixing valve has ___ inlets and ___ outlets.






20. Which one of the following measures and takes action?






21. What instrument is best for measuring vacuum?






22. What should be done to prepare a flange for the gasket installation?






23. The main cause of undercutting is...






24. What would be the result of an incorrectly installed orifice plate?






25. Which of the following types of copper tube has the smallest wall thickness?






26. An oil separator is required on systems using...






27. A triple-duty valve is installed...






28. In a refrigeration system a condensable gas is...






29. OSHA was enacted to...






30. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...






31. What type of hanger uses a spring that splits the rod?






32. The last two digits on an E-6010 electrode specify...






33. What type of flame should be used to cut carbon steel?






34. Where should the pressure enter a globe valve?






35. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.






36. What is the maximum pressure for an acetylene hose?






37. When is it safe to remove the old packing from a valve that is under pressure?






38. OD for 1/2'(inch)

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39. Steam condensate lines should use...






40. How high must you extend a ladder above the roof or deck?

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41. OD for 5'(inch)

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42. OD for 8'(inch)

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43. When a soldered joint is overheated...






44. Which rigging configuration has the greatest sling strength?






45. Since _______________ is virtually incompressible - pressure has little effect on its volume.






46. A bushing is NOT a good replacement for a reducer because...






47. What is the weakest part of a chain hoist?






48. The type of valve permitted downstream of a temperature and pressure relief valve on a water heater is...






49. The pipe size of a pipe changes from the ID to the OD on what pipe size?

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50. The specific gravity of a liquid can only be measured using the following instrument...