Instrument tech nccer questions with verified answers guaranteed pass 2026

Instrument tech nccer
questions with verified answers
2026


1. 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: D. At the time each test is completed (INST LVL4)(12410-16/
Section 3.2.0)
2. 2) Teflon paste must not be used on :
A. Nitrogen service
B. Natural gas service
C. Water service
D. Oxygen service: D. Oxygen service (INST LVL 1 )(12109-14/Section 2.1.1)
3. 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: C. Lost the neutral
4. 4) Gain increase when tube :
A. Back bends are made
B. Bend radius increases
C. Size decreases
D. Long radius elbows are used: B. Bend radius increases (INST LVL 2)(12302-15 section 2.1.1)
5. 5) A temperature measuring device that produces a voltage as the temper-
ature changes is a / an :


,A. RTD
B. Thermistor
C. Thermometer
D. Thermocouple: D. Thermocouple (INST LVL 2) (12110-15 section 1.2.2)
6. 6) A pressure piping code is found in :
A. ANSI B 31.1
B. NEC 690 .






,C. OSHA1910 .
D. ISA S 5.1: A. ANSI B 31.1
7. 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: C. Mark the tube with a felt tip pen
8. 8) An example of direct measurement indicator is a :
A. Pressure gauge
B. Bulb thermometer
C. Sight glass
D. Flowmeter: C. Sight glass
9. 9) On the image , how many hand valves are installed on Tank 1201C A.
1
B. 2
C. 3
D. 4: C. 3
10. 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: C. Verify that there is a problem
11. 11) Where can the appropriate elevation of an instrument be found ?
A. Location drawing
B. P & ID
C. Flow diagram
D. Loop drawing: A. Location drawing
12. 12) Chemical cleaning of tubing attached to instruments may cause dam-
age to sensor
A. Electronics
B. Paint



, C. Elements
D. Bolts: C. Elements
13. 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: C. 1 to 3 degrees
14. 14) Cable shields should be connected to the :
A. Signal ground reference point
B. Ground at each accessible location
C. First accessible grounding electrode
D. Raceway or cable tray in which the cable is routed: B. Ground at each accessible location
15. 15) An employee de energizes a piece of equipment by removing the power
plug from the outlet . If the employee continues to hold on to the power plug
once removed , this employee is said to have what type of control over the
energy potential ?
A. Isolation control
B. Lockout tagout
C. Exclusive control
D. Remote control: C. Exclusive control
16. 16) A compressor keeps blowing a PSV for troubleshooting a technician
should start looking at
A. Power switch setting
B. Pressure switch deadband
C. Level switch setting
D. Float swich deadband: B. Pressure switch deadband
17. 17) In the figure provided the pipe line that carries working process fluid
such as steam water or gas is labeled as
A. A
B. B
C. C