PIPEFITTER NCCER V4 STUDY GUIDE
QUESTIONS WITH 100 PERCENT CORRECT
UPDATED REVIEW PAPER 2026
QUESTIONS AND CORRECT ANSWERS
GRADED A+
⩥ 2) Teflon paste must not be used on :
A. Nitrogen service
B. Natural gas service
C. Water service
D. Oxygen service. Answer: D. Oxygen service (INST LVL 1 )(12109-
14/Section 2.1.1)
⩥ 3) A 24VDC power supply is not working . With your multimeter you
verify no DC voltage . On the 120VAC input you measure 120V
between hot and ground , and 72V between hot and neutral . What is the
most likely cause of this ?
A. Lost the ground
B. Lost the hot
C. Lost the neutral
D. Lost the fuse. Answer: C. Lost the neutral
,⩥ 4) Gain increase when tube :
A. Back bends are made
B. Bend radius increases
C. Size decreases
D. Long radius elbows are used. Answer: B. Bend radius increases
(INST LVL 2)(12302-15 section 2.1.1)
⩥ 5) A temperature measuring device that produces a voltage as the
temperature changes is a / an :
A. RTD
B. Thermistor
C. Thermometer
D. Thermocouple. Answer: D. Thermocouple (INST LVL 2) (12110-15
section 1.2.2)
⩥ 6) A pressure piping code is found in :
A. ANSI B 31.1
B. NEC 690 .
C. OSHA1910 .
D. ISA S 5.1. Answer: A. ANSI B 31.1
⩥ 7) When marking tubing for cutting , the preferred method is
A. Scribe a mark into the tube with a sharp object .
,B. Mark the tube with a grease pencil
C. Mark the tube with a felt tip pen
D. Mark the tube with a crayon. Answer: C. Mark the tube with a felt tip
pen
⩥ 8) An example of direct measurement indicator is a :
A. Pressure gauge
B. Bulb thermometer
C. Sight glass
D. Flowmeter. Answer: C. Sight glass
⩥ 9) On the image , how many hand valves are installed on Tank 1201C
A. 1
B. 2
C. 3
D. 4. Answer: C. 3
⩥ 10) What is the first step in troubleshooting a problem in a system ?
A. Turn off power to the instrument
B. Stimulate an input
C. Verify that there is a problem
D. Stimulate an output. Answer: C. Verify that there is a problem
, ⩥ 11) Where can the appropriate elevation of an instrument be found ?
A. Location drawing
B. P & ID
C. Flow diagram
D. Loop drawing. Answer: A. Location drawing
⩥ 12) Chemical cleaning of tubing attached to instruments may cause
damage to sensor
A. Electronics
B. Paint
C. Elements
D. Bolts. Answer: C. Elements
⩥ 13) When making 90 - degree tubing bend , allowance for springback
should be : A. 6 to 8 degrees
B. 4-5 degrees
C. 1 to 3 degrees
D. 0 degrees. Answer: C. 1 to 3 degrees
⩥ 14) Cable shields should be connected to the :
A. Signal ground reference point
QUESTIONS WITH 100 PERCENT CORRECT
UPDATED REVIEW PAPER 2026
QUESTIONS AND CORRECT ANSWERS
GRADED A+
⩥ 2) Teflon paste must not be used on :
A. Nitrogen service
B. Natural gas service
C. Water service
D. Oxygen service. Answer: D. Oxygen service (INST LVL 1 )(12109-
14/Section 2.1.1)
⩥ 3) A 24VDC power supply is not working . With your multimeter you
verify no DC voltage . On the 120VAC input you measure 120V
between hot and ground , and 72V between hot and neutral . What is the
most likely cause of this ?
A. Lost the ground
B. Lost the hot
C. Lost the neutral
D. Lost the fuse. Answer: C. Lost the neutral
,⩥ 4) Gain increase when tube :
A. Back bends are made
B. Bend radius increases
C. Size decreases
D. Long radius elbows are used. Answer: B. Bend radius increases
(INST LVL 2)(12302-15 section 2.1.1)
⩥ 5) A temperature measuring device that produces a voltage as the
temperature changes is a / an :
A. RTD
B. Thermistor
C. Thermometer
D. Thermocouple. Answer: D. Thermocouple (INST LVL 2) (12110-15
section 1.2.2)
⩥ 6) A pressure piping code is found in :
A. ANSI B 31.1
B. NEC 690 .
C. OSHA1910 .
D. ISA S 5.1. Answer: A. ANSI B 31.1
⩥ 7) When marking tubing for cutting , the preferred method is
A. Scribe a mark into the tube with a sharp object .
,B. Mark the tube with a grease pencil
C. Mark the tube with a felt tip pen
D. Mark the tube with a crayon. Answer: C. Mark the tube with a felt tip
pen
⩥ 8) An example of direct measurement indicator is a :
A. Pressure gauge
B. Bulb thermometer
C. Sight glass
D. Flowmeter. Answer: C. Sight glass
⩥ 9) On the image , how many hand valves are installed on Tank 1201C
A. 1
B. 2
C. 3
D. 4. Answer: C. 3
⩥ 10) What is the first step in troubleshooting a problem in a system ?
A. Turn off power to the instrument
B. Stimulate an input
C. Verify that there is a problem
D. Stimulate an output. Answer: C. Verify that there is a problem
, ⩥ 11) Where can the appropriate elevation of an instrument be found ?
A. Location drawing
B. P & ID
C. Flow diagram
D. Loop drawing. Answer: A. Location drawing
⩥ 12) Chemical cleaning of tubing attached to instruments may cause
damage to sensor
A. Electronics
B. Paint
C. Elements
D. Bolts. Answer: C. Elements
⩥ 13) When making 90 - degree tubing bend , allowance for springback
should be : A. 6 to 8 degrees
B. 4-5 degrees
C. 1 to 3 degrees
D. 0 degrees. Answer: C. 1 to 3 degrees
⩥ 14) Cable shields should be connected to the :
A. Signal ground reference point
