Instrument tech nccer Exam Questions And Correct Answers.
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Course
Instrument tech nccer
Institution
Instrument Tech Nccer
Instrument tech nccer Exam Questions And
Correct 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...
Instrument tech nccer Exam Questions And
Correct 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 - 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 - 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
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
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
D. Raceway or cable tray in which the cable is routed - answer✔B. Ground at each accessible
location
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 - answer✔C. Exclusive control
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 - answer✔B. Pressure switch deadband
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
D. D - answer✔A. A
18) A heat reactive dryer is producing damp instrument air what could be a simple fix
A. Replace desiccant
B. Change to a different desiccant
C. Adjust the cycle time
D. Add a second set of dryers - answer✔C. Adjust the cycle time
19) Type J thermocouple extension wire is
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