Plumbing Certification

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...
Quarter
Point thumb up
8.33lbs
Pressure Rating


2. How often should the atmosphere be tested in a confined space?
Sch 40
Continuously
Basket
orthographic


3. What are the three types of steam traps?
The tubing has been cleaned for oxygen service
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Thermostatic - Thermodynamic and Mechanical
Primer


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.
Globe valve
BUT
.707 x Travel
orthographic


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...
no valves permitted
Capillary action
bowline on a bight
Raise the load


6. How do you determine gear ratios?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


7. What is the formula to figure the area of a circle?
radius squared times PI
250 degrees
15 Feet
Yellow.. think Dee Double U is yelloWWW


8. The maximum practical suction lift on positive displacement pumps is 22 feet and on centrifugal pumps it is __________ feet.
Increase the pressure when the temperature increases
To allow for thermal movement
15 Feet
.491lbs


9. A condensate receiver is used when...
The flow of a liquid into a small space
Material Safety Data Sheet
the core
When a large volume of condensate is generated


10. To determine the set on a 45 degree offset you would multiply the travel by...
Snubber
Steam
8.33lbs
.707


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


12. What is the formula to calculate thermal expansion?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


13. Soldered joints should never be used on systems above...
None
Globe valve
250 degrees
.433psi


14. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Saturated
1.5
steel to copper joints
Quarter


15. Which component in a closed control loop is the primary element?
Positive
Tagged and removed from service.
Hazard prevention and control.
Sensor


16. With a high pressure valve you should never _____ under pressure.
Remove the packing
DWV
Crimson... think aCRimson
The stud bolt is stronger than a machine bolt of the same size and material.


17. What is on the low side of the vapor compression cycle?
Increase
The Evaporator
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Vaporization


18. When should you ream the end of a pipe?
Saturated
After cutting
protect worker safety and health
Remote bulb


19. A mixing valve has ___ inlets and ___ outlets.
In the hot water heating pumps discharge piping.
2 and 1
3 1/2'(inch)
Beam clamp


20. Which one of the following measures and takes action?
Primer
Controller
Raise the load
.491lbs


21. What instrument is best for measuring vacuum?
2nd gear divided by primary gear. Example: A machine has a primary pulley of 6'(inch) and a secondary pulley of 24'(inch). Formula is 24/6=4 - so the ratio is 4 to 1
Manometer
Expansion loop.
Choked position


22. What should be done to prepare a flange for the gasket installation?
Down Stream
Increase in friction
Remove any paint or rust.
Blue... think b-LLLLue


23. The main cause of undercutting is...
pi * radius squared
Body belts
Yellow.. think Dee Double U is yelloWWW
Too fast of a travel rate


24. What would be the result of an incorrectly installed orifice plate?
Erratic readings
2 3/8'(inch)
galvanized
Set point


25. Which of the following types of copper tube has the smallest wall thickness?
Globe
Center of the pipe
DWV
falls


26. An oil separator is required on systems using...
With the weld at a 45 degree angle
Saturated
Primer
Ammonia


27. A triple-duty valve is installed...
Expansion loop.
In the hot water heating pumps discharge piping.
steam and condensate flowing in the same direction
Multiply the length of the hypotenuse of the roll and the set by 1.414


28. In a refrigeration system a condensable gas is...
To chemically prepare the pieces for soldering
To protect the threads from rust.
Hydraulics
Ammonia


29. OSHA was enacted to...
Water
protect worker safety and health
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
The tubing has been cleaned for oxygen service


30. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...
Waterlogged
180
foot valve
13/16'(inch)


31. What type of hanger uses a spring that splits the rod?
180
West of the building
The system temperature - thermal and dynamic movement of the pipe and vibration.
Spring hanger


32. The last two digits on an E-6010 electrode specify...
the type of coating and current
.707 x Travel
protect worker safety and health
Up and Down


33. What type of flame should be used to cut carbon steel?
Neutral
15 PSI
return fitting
protect worker safety and health


34. Where should the pressure enter a globe valve?
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Segmental
Flooded
30 Degrees


35. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Steam
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
maximum rated capacity
Basket


36. What is the maximum pressure for an acetylene hose?
Quarter
15 PSI
In the hot water heating pumps discharge piping.
Eccentric reducer (flat on top)


37. When is it safe to remove the old packing from a valve that is under pressure?
NEVER!
Flat and horizontal positions
near the middle of the jaws
Pressure rating


38. OD for 1/2'(inch)

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


39. Steam condensate lines should use...
Center of the pipe
Equalizing line
supporter of combustion
Sch 80 Steel pipe


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


41. OD for 5'(inch)

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


42. OD for 8'(inch)

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


43. When a soldered joint is overheated...
1:48 - because 1/4 of an inch is 1/48th of a foot
Choked position
radius squared times PI
The flux burns and the joint becomes ineffective


44. Which rigging configuration has the greatest sling strength?
Basket
Absolute
Pipe penetration
DWV


45. Since _______________ is virtually incompressible - pressure has little effect on its volume.
Water
.433psi
no valves permitted
Forced convection - because the FAN forces convection!


46. A bushing is NOT a good replacement for a reducer because...
When a large volume of condensate is generated
Pressure Rating
Its cheaper!
Argon


47. What is the weakest part of a chain hoist?
Conduction - convection and radiant.
On low side of the system and expands liquid to low pressure gas.
lower hook
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.


48. The type of valve permitted downstream of a temperature and pressure relief valve on a water heater is...
no valves permitted
tangent 1/2 angle x radius
Waterlogged
Segmental


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


50. The specific gravity of a liquid can only be measured using the following instrument...
62.4lbs
hydrometer
The stud bolt is stronger than a machine bolt of the same size and material.
1/2 BTU