Instrument tech nccer Exam 2026 Questions and Answers

Instrument tech nccer Exam 2026
Questions and Answers

1) When is the BEST time to document each loop check for commissioning ? A.

Prior to the start of inspection

B. When all test and inspection activities are complete

C. When updating information on a daily basis

D. At the time each test is completed - Correct answer-D. At the time each test is

completed (INST LVL4)(12410-16/ Section 3.2.0)

2) Teflon paste must not be used on :

A. Nitrogen service

B. Natural gas service

C. Water service

D. Oxygen service - Correct answer-D. Oxygen service (INST LVL 1 )(12109-

14/Section 2.1.1)




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,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 - Correct 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 - Correct 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

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,C. Thermometer

D. Thermocouple - Correct 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 - Correct 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 - Correct answer-C. Mark the tube with a felt tip

pen

8) An example of direct measurement indicator is a :

A. Pressure gauge



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, B. Bulb thermometer

C. Sight glass

D. Flowmeter - Correct 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 - Correct 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 - Correct 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


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