TNT 700.6A PREP ACTUAL PAPER 2026
QUESTIONS WITH SOLUTIONS 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
QUESTIONS WITH SOLUTIONS 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
