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 system which the refrigerant is in the shell and cools the fluid in the tubes is...






2. What is the purpose of the expansion joint in a steam system?






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






4. The density of 1 cubic inch of Mercury is...






5. A dielectric fitting should be used on...






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






7. The letters MSDS stand for...






8. What is the welding position 1 - on the electrode mean?






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






10. There are __________ gallons in a cubic foot.






11. What is the expansion and compression of water vapor in a pump?






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






13. What is installed after the isolation valve and before the trap union on a standard trap assembly?






14. A device that mechanically attaches to the side of a flange on a beam is called a...






15. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...






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






17. When a liquid changes immediately to a vapor it is called...






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






19. What causes water to move in a Hydronic system?






20. OD for 2'(inch)

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21. What type of expansion joint utilizes mechanical movement?






22. How many 2'(inch) pipes can be supplied from a 6'(inch) header?






23. The face to center measurement of any welded angle fitting equals...






24. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...






25. Where is a bourdon tube found?






26. The treatment of liquids at rest is known as...






27. The last digit on a welding electrode refers to the __________ of the electrode.






28. The device that controls the pressure in a low pressure steam boiler is called a...






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

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30. The pressure exerted by a liquid at rest is...






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






32. One cubic foot of water weighs?






33. Which of the following is NOT acceptable as part of a personal fall arrest system?






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






35. Calculate head pressure of a vertical pipe at specific elevations.






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






37. What are 3 fuel gases used for heating pipe or tubing?






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






39. A vent is not needed on a condensate receiver when...






40. An up-feed steam heating system has the heating units...






41. What is the sum of all angles in a triangle?






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






43. A fan coil uses ______ to distribute heating or cooling to the space.






44. Use of air as a power source is known as...






45. Steam supply using parallel flow is...






46. The purpose of the foot switch on a power-operated pipe cutting and threading machine is to?

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47. In a typical residential air conditioning system - the evaporator is of the _______________ type - where the liquid refrigerant should be totally vaporized before it reaches the outlet of the evaporator.






48. When brazing for medical gas or refrigeration always...






49. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.






50. The combining of more than one metal is...