Instrument tech nccer Exam Questions With Correct Answers

Instrument tech nccer Exam Questions With
Correct Answers

1) When is the BEST time to document each loop check for commissioning ? A.
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Prior to the start of inspection
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B. When all test and inspection activities are complete
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C. When updating information on a daily basis
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D. At the time each test is completed - CORRECT ANSWER✔✔-D. At the time each
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test is completed (INST LVL4)(12410-16/ Section 3.2.0)
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2) Teflon paste must not be used on :
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A. Nitrogen service
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B. Natural gas service
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C. Water service
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D. Oxygen service - CORRECT ANSWER✔✔-D. Oxygen service (INST LVL 1 )(12109-
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14/Section 2.1.1) |




3) A 24VDC power supply is not working . With your multimeter you verify no DC
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voltage . On the 120VAC input you measure 120V between hot and ground , and
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72V between hot and neutral . What is the most likely cause of this ?
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A. Lost the ground
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B. Lost the hot
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C. Lost the neutral
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D. Lost the fuse - CORRECT ANSWER✔✔-C. Lost the neutral
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,4) Gain increase when tube :
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A. Back bends are made
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B. Bend radius increases
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C. Size decreases
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D. Long radius elbows are used - CORRECT ANSWER✔✔-B. Bend radius increases
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(INST LVL 2)(12302-15 section 2.1.1)
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5) A temperature measuring device that produces a voltage as the temperature
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changes is a / an : | | | | | |




A. RTD
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B. Thermistor
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C. Thermometer
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D. Thermocouple - CORRECT ANSWER✔✔-D. Thermocouple (INST LVL 2) (12110-
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15 section 1.2.2)
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6) A pressure piping code is found in :
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A. ANSI B 31.1
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B. NEC 690 .
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C. OSHA1910 .
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D. ISA S 5.1 - CORRECT ANSWER✔✔-A. ANSI B 31.1
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7) When marking tubing for cutting , the preferred method is
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A. Scribe a mark into the tube with a sharp object .
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,B. Mark the tube with a grease pencil
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C. Mark the tube with a felt tip pen
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D. Mark the tube with a crayon - CORRECT ANSWER✔✔-C. Mark the tube with a
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felt tip pen
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8) An example of direct measurement indicator is a :
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A. Pressure gauge
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B. Bulb thermometer
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C. Sight glass
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D. Flowmeter - CORRECT ANSWER✔✔-C. Sight glass
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9) On the image , how many hand valves are installed on Tank 1201C
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A. 1
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B. 2
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C. 3
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D. 4 - CORRECT ANSWER✔✔-C. 3
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10) What is the first step in troubleshooting a problem in a system ?
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A. Turn off power to the instrument
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B. Stimulate an input
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C. Verify that there is a problem
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D. Stimulate an output - CORRECT ANSWER✔✔-C. Verify that there is a problem
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11) Where can the appropriate elevation of an instrument be found ?
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, A. Location drawing
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B. P & ID
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C. Flow diagram
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D. Loop drawing - CORRECT ANSWER✔✔-A. Location drawing
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12) Chemical cleaning of tubing attached to instruments may cause damage to
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sensor |




A. Electronics
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B. Paint
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C. Elements
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D. Bolts - CORRECT ANSWER✔✔-C. Elements
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13) When making 90 - degree tubing bend , allowance for springback should be :
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A. 6 to 8 degrees
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B. 4-5 degrees
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C. 1 to 3 degrees
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D. 0 degrees - CORRECT ANSWER✔✔-C. 1 to 3 degrees
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14) Cable shields should be connected to the :
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A. Signal ground reference point
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B. Ground at each accessible location
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C. First accessible grounding electrode
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D. Raceway or cable tray in which the cable is routed - CORRECT ANSWER✔✔-B.
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Ground at each accessible location
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