NCCER INSTRUMENTATION EXAM

• P a g e

NCCER INSTRUMENTATION EXAM

WITH ALL

CORRECT AND ANSWERS

Question 1: Where can the appropriate elevation of an instrument be found?

• Location drawing
• P & ID
• Flow diagram
• Loop drawing

Correct Answer: A. Location drawing

Question 2: Chemical cleaning of tubing attached to instruments may cause damage to sensor

• Electronics
• Paint
• Elements
• Bolts

Correct Answer: C. Elements

Question 3: When making 90 - degree tubing bend , allowance for springback should be :

• 6 to 8 degrees
• 4-5 degrees
• 1 to 3 degrees
• 0 degrees

• P a g e

Correct Answer: C. 1 to 3 degrees

Question 4: Cable shields should be connected to the :

• Signal ground reference point
• Ground at each accessible location
• First accessible grounding electrode
• Raceway or cable tray in which the cable is routed

Correct Answer: B. Ground at each accessible location

Question 5: 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 ?

• Isolation control
• Lockout tagout
• Exclusive control
• Remote control

Correct Answer: C. Exclusive control

Question 6: A compressor keeps blowing a PSV for troubleshooting a technician should start looking at

• Power switch setting
• Pressure switch deadband
• Level switch setting
• Float swich deadband

Correct Answer: B. Pressure switch deadband

• P a g e

Question 7: In the figure provided the pipe line that carries working process fluid such as steam water or gas is labeled as

• A
• B
• C
• D

Correct Answer: A. A

Question 8: A heat reactive dryer is producing damp instrument air what could be a simple fix

• Replace desiccant
• Change to a different desiccant
• Adjust the cycle time
• Add a second set of dryers

Correct Answer: C. Adjust the cycle time

Question 9: Type J thermocouple extension wire is

• White & red
• Yellow & red
• Blue & red
• Green & red

Correct Answer: A. White & red

Question 10: Which of the following gases should be used to purge tubing and pipe after cleaning

• argon
• Air
• Nitrogen

• P a g e

• helium

Correct Answer: C. Nitrogen

Question 11: When pressure testing , the required documentation includes :

• Specification sheets
• Troubleshooting flow charts
• Temperature , pressure , and test medium
• Required corrective measures

Correct Answer: C. Temperature , pressure , and test medium

Question 12: An air - to - open valve uses

a : A. Fail - in - position actuator

• Spring - to - open actuator
• Dual spring actuator
• Spring - to - close actuator

Correct Answer: D. Spring-to-close Actuator

Question 13: The MOST common method used to measure the flow of liquid in a pipe is to

introduce a restriction in the pipe and measure the :

• Velocity
• Pressure
• Differential pressure
• Viscosity

Correct Answer: A. Velocity