INSTRUMENT TECH NCCER ACTUAL EXAM
2026 QUESTIONS WITH ANSWERS 100%
CORRECT
◉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
B. Ground at each accessible location
C. First accessible grounding electrode
2026 QUESTIONS WITH ANSWERS 100%
CORRECT
◉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
B. Ground at each accessible location
C. First accessible grounding electrode
