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NCCER PIPEFITTER TEST | ALL QUESTIONS
AND CORRECT ANSWERS | LATEST VERSION |
VERIFIED ANSWERS | GRADED A+ (JUST
RELEASED)
The working load limit of hoisting equipment is based on a straight, vertical hoist line and. A) A side load up to 5 degrees B) The load being freely suspended C) The load resting on the ground ------CORRECT ANSWER---------------B Which drawing gives enough information to be able to fabricate a pipe run? A) Plot B) Oblique C) P & ID D) Isometric ------CORRECT ANSWER---------------D Which of the following tools should be used to install a 2'' threaded chrome plated pipe in a fitting? A) Strap wrench B) Chain wrench C) 24'' standard pipe wrench D) 36'' standard pipe wrench ------CORRECT ANSWER---------------A The rigger MUST carefully inspect the chain hoist. A) Daily B) Before each use C) Monthly D) After a malfunction ------CORRECT ANSWER---------------B
Information referring to design requirements and materials for pipe, flanges, valves, and related items to be used is found in. A) Isometric drawings B) Plot plans C) P & IDs D) Specifications ------CORRECT ANSWER---------------A All piping and piping components are identified by what international identification system? A) API B) ASTM C) ASME D) WPS ------CORRECT ANSWER---------------B What is the highest safe standing step or level from the top of a step ladder ( A-Frame) A) 1 B) 2 C) 3 D) 4 ------CORRECT ANSWER---------------B A plug valve is used to. A) Start and stop flow B) Regulate flow C) Prevent reverse flow D) Divert flow ------CORRECT ANSWER---------------A
All of the following types of pipe are thermoplastic EXCEPT. A) Polyvinyl Chloride (PVC) B) Fiberglass C) Polyethylene D) Acrylonitrile - Butadiene- Styrene ------CORRECT ANSWER--------------- B Which of the following is a classification of cast iron pipe? A) Schedule 40 B) Schedule 80 C) XH D) XS ------CORRECT ANSWER---------------C Which of the following parts of a layout will NOT be the same for all three lines in an equally spread offset? A) Starting point B) Run C) Set D) Travel ------CORRECT ANSWER---------------A Flat Face Flanges require which type of gasket? A) Spiral wound B) Full face C) Strip D) Jacketed ------CORRECT ANSWER---------------B What is a flexible link seal used for? A) Seal the end of a pipe
B) Seal a pipe in a pipe sleeve C) Seal the end of a valve D) Seal the drain in a floor drain ------CORRECT ANSWER---------------B A vertical pipe filled with 10'' of water has a head pressure of A) 4.25 psi B) 4.33 psi C) 4.38 psi D) 4.5 psi ------CORRECT ANSWER---------------B What is the formula for finding the volume of a cylinder? A) Pi x r squared x h B) Pi x radius x height C) L x W x H D) B x H x D ------CORRECT ANSWER---------------A What MINIMUM number of bolts can be removed from an 8-bolt flange when a slip blind is inserted for hydrotesting? A) 2 B) 3 C) 4 D) 5 ------CORRECT ANSWER---------------C Globe valve : A) Prevents reversal of flow through a piping system B) Has a globe - shaped handle C) Relieves pressure D) Is better than a gate valve for throttling flow ------CORRECT ANSWER--- ------------D
What would be the long segment measurement of a SIX-PIECE, 90 degree mitered elbow that has a radius of 24'' A) 3 3/ B) 7 5/ C) 7 13/ D) 15 1/2 ------CORRECT ANSWER---------------B Performance, reliability, and quality of components are assured by use of A) A qualified journeyman B) Standards and Codes C) A qualified engineer D) Reputable manufactures ------CORRECT ANSWER---------------B In-line specialty ball joints solve all the following problems EXCEPT. A) Alignment B) Vibration C) Expansion D) Flow ------CORRECT ANSWER---------------D Convert 9/16 to a decimal. A) 0.58 C) 0. B) 0.56 D) 0.53 - -----CORRECT ANSWER---------------B A length of 1 1/2-inch pipe is to be cut to run between two 90-drgree 6,000# threaded fittings. The fittings measure 7 ft 2 1/4 inches center-to-center. What is the cut length of the pipe?
A) 6 feet 8 5/8 inches B) 6 feet 8 3/4 inches C) 6 feet 10 5/8 inches D) 7 feet 2 1/4 inches ------CORRECT ANSWER---------------C What are installed in a pipe run to provide extra flexibility between anchors and accommodate thermal growth and contraction? A) Trapeze hangers B) Expansion loops C) Heat exchangers D) Steam traps ------CORRECT ANSWER---------------B What is the height of the raised face on a class 600 forged steel weld neck flange? A) 1/16'' B) 1/8'' C) 3/16'' D) 1/4'' ------CORRECT ANSWER---------------D In MOST instances, what is stamped or forged on the side of valves, fittings, and flanges? A) Date of manufacture, size, and heat number B) Wall thickness, corrosion resistance, and type of material C) Type of material, size, and pressure rating D) Heat number, wall thickness, and country of origin ------CORRECT ANSWER---------------C Convert 1/4 to its decimal equivalent. A). B).
B) 9 5/
C) 9 9/
D) 10 1/16 ------CORRECT ANSWER---------------C
The two steps in making up threaded joints are the hand engagement and A) Machine makeup B) Wrench makeup C) Driver makeup ------CORRECT ANSWER---------------B Which of the following actions should be taken before a hydrostatic test is performed? A) Remove pressure relief valves B) Leave control mechanisms in place C) Leave orifice flanges in place D) Remove blinds ------CORRECT ANSWER---------------a A 4-inch lateral riser is to be fabricated for a 6-inch pipe. How many ordinate lines will be needed to lay out this cut? A) 32 B) 16 C) 8 D) 4 ------CORRECT ANSWER---------------C Who is qualified to repair power tools. A) Journey person B) Competent Technician C) Electrician D) Tool crib attendant ------CORRECT ANSWER---------------B
Which of the following plastic pipes is NOT joined by solvent welding? A) PVC B) HDPE C) CPVC D) ABS ------CORRECT ANSWER---------------B Material placed in the bottom of the trench under the pipe to provide support is called. A) Heave B) Sub trench C) Trench load D) Bedding ------CORRECT ANSWER---------------D Socket weld joints have a gap between the end of the pipe and the bottom of the socket. What is the purpose of this gap? A) Makes assembly easier B) Reduces flexibility at the fitting C) Prevents weld cracking D) Provides fit-up adjustment ------CORRECT ANSWER---------------C When are rupture discs installed into a pipeline? A) Before flushing and testing of pipeline B) After installation of the pipeline C) Before start-up of the system D) After start-up of the system ------CORRECT ANSWER---------------C Chain come-alongs are PRIMARILY designed for? A) Lifting in close quarters B) Vertical lifting C) Lifting in any location D) Horizontal lifting ------CORRECT ANSWER---------------B
A) 2 C) 6
B) 4 D) 8 ------CORRECT ANSWER---------------C
The first step to changing blades and bits on power tools is to A) Disassemble tool B) Disconnect the power C) Remove the guards D) Get a new blade or bit ------CORRECT ANSWER---------------B What must be done to MOST socket welded valves before being welded into place? A) Close the valve completely B) Close the valve halfway C) Open the valve completely D) Cover the end of the valve ------CORRECT ANSWER---------------C What is the length of pipe required to fabricate a 6''diameter schedule 40 pipe spool with one class 150# RFWN flange on one end, and one class 300# RFWN flange on the other end, with a face-to-face measurement of 18 1/2'' (assume a 1/ welder gap) A) 10 11/ B) 10 7/ C) 12 5/ D) 12 1/2 ------CORRECT ANSWER---------------B What is the standard torqueing valve of the Victaulic coupling bolts? A) No torquing is required B) 40 inch pounds C) 60 inch pounds D) 80 inch pounds ------CORRECT ANSWER---------------A
At what dimension does a pipe begin to be measured by the outside diameter? A) 8 inches B) 10 inches C) 12 inches D) 14 inches ------CORRECT ANSWER---------------D What is the 4 th ordinate cutback measurement for a 3'' diameter type 3 dummy leg on a 6'' elbow A) 12 7/ B) 10 3/ C) 8 11/ D) 6 11/16 ------CORRECT ANSWER---------------B What is the ratio of the distance that the ladder should be from the base of the wall to the height where the ladder meets the wall. A) 1/ B) 1/ C) 1/ D) 1/5 ------CORRECT ANSWER---------------C Trenches MUST be designed, excavated, and shored according to A) ASME standards C) Company standards B) API standards D) OSHA standards ------CORRECT ANSWER--------------
- D The angles of any triangle add up to
The movement of pipe that is caused by an increase in temperature is called A) Hot spring B) Thermal expansion C) Heat swelling D) Pipe stretching ------CORRECT ANSWER---------------B A cold spring relieves A) Cavitation B) Water hammer C) Thermal expansion D) Tension ------CORRECT ANSWER---------------C How many feet apart must oxygen and fuel gas cylinders be stored, unless there is a 5 ft high, 30 minute burn rated wall between them? A) 5 B) 10 C) 15 D) 20 ------CORRECT ANSWER---------------D When performing a line break, first? A) Break the bolts down & away from you B) Loosen each bolt a little at a time C) Break the bolts closest to you D) Loosen bolts in a cross over pattern ------CORRECT ANSWER------------- --A A pipe nipple is any length of threaded pipe that is shorter than A) 12''
B) 13''
C) 14''
D) 15'' ------CORRECT ANSWER---------------A
What is the reference angle if the hypotenuse of a right triangle is 36'' and its adjacent side is 14''. ( pipefitters blue book) A) 79 degrees B) 67 degrees C) 23 degrees D) 21 degrees ------CORRECT ANSWER---------------B In piping systems, ball joints are installed to allow for? A) Expansion and Contraction C) Pressure Relief B) Chemical Absorption D) Open & Closing ------CORRECT ANSWER---------------A All of the following drawing dimensions are used to determine the overall length of Run of a pipe EXCEPT. A) Pipe diameter B) Center-to-center C) Face-to-face D) Center-to-face ------CORRECT ANSWER---------------A Ground fault circuit interrupters SHOULD be located A) Closest to the power tool B) At the source of power C) On individual extension cords D) On cords with only 3 prong connections ------CORRECT ANSWER-------- -------D
Expansion joints allow A) The pipe line to be easily dismantled B) For linear expansion and contraction of pipe lines C) Easy access to flange connections D) Access to unclog the line ------CORRECT ANSWER---------------B Level glasses are also called A) Sight glasses B) Eye glasses C) Inspection ports D) Spirit viles ------CORRECT ANSWER---------------D Bending pipe allows the process to A) Coat less B) Heat up more C) Be stopped D) Flow more freely ------CORRECT ANSWER---------------D Where are title blocks typically located on a drawing? A) Upper right B) Lower right C) Upper left D) Lower left ------CORRECT ANSWER---------------B Expansion loops are NOT made with these types of fittings. A) Butt weld B) Threaded C) Socket weld D) Bell end ------CORRECT ANSWER---------------B
A plot shows the: A) Framework of a building B) Schematic diagram of a system C) Location of a building on a piece of property D) Locations of equipment within a system ------CORRECT ANSWER-------- -------C A threading machine equipped with NPT dies is designed to cut which type of threads. A) Machine bolt threads B) National pipe threads C) New pipe threads D) Non-plumbed threads ------CORRECT ANSWER---------------B The term, plum, relates to A) Horizontal alignment B) Vertical alignment C) Pipe height D) Pipe location ------CORRECT ANSWER---------------B What is center-to-end length on a 3,000# 2'' SW 90 ELL? A) 2'' B) 2 1/2'' C) 2 3/8'' D) 1 1/2'' ------CORRECT ANSWER---------------C Dry washing is a form of A) Removing excess weld B) Cold springing C) Stress relieving D) Hot springing ------CORRECT ANSWER---------------A
