INSTRUMENTATION NCCER | QUESTIONS AND AND CORRECT
ANSWERS | ALREADY GRADED A+ | LATEST EXAM UPDATE
What mode must a controller be in before any changes are made to the process
variable? - CORRECT ANSWER - manual
The minimum value of the measured process range is considered to be? -
CORRECT ANSWER - Zero input value
Optimal gain is the MAXIMUM allowable value of gain in which the system is:
- CORRECT ANSWER - stable
Which of the following must be determined before selecting a pressure reducing
regulation? - CORRECT ANSWER - Capacity required
Pressure is expressed mathematically as: - CORRECT ANSWER - P=F/A
Loop testing involves simulation of the? - CORRECT ANSWER - Process
variable
A bubbler is used as feedback in what type of system? - CORRECT ANSWER
- pneumatic
A temperature measuring device that produced a voltage as a temperature
changes is a ? - CORRECT ANSWER - Thermocouple
All of the following valves are used to regulate flow except? - CORRECT
ANSWER - Gate valve
,Which drawing shows the height, width, and depth of a particular installation? -
CORRECT ANSWER - isometric drawing
Which of the following tools should be used to remove old packing from the
packing gland? - CORRECT ANSWER - Packing extractor
Which wiring diagram does NOT show discrete conductors from end to end, but
in a bundle? - CORRECT ANSWER - Raceway diagram
When used as a film between two surfaces, lubricants will reduce all of the
following EXCEPT: - CORRECT ANSWER - leakage
A proportional band of 100% is equivalent to a gain of? - CORRECT
ANSWER - 1
The component in an instrument system that detects process change is the? -
CORRECT ANSWER - Primary element
A process transmitter connected across an oriface plate measures? - CORRECT
ANSWER - The differential pressure across the plate
What communication protocol has become the most commonly used? -
CORRECT ANSWER - Hart
What is the first step in troubleshooting a problem in a system? - CORRECT
ANSWER - Verify that there is a problem
Cutting oils are classified as? - CORRECT ANSWER - active and inactive
, Electronic instrument signal leads can be influenced by? - CORRECT
ANSWER - noise
Pilot operated regulators are preferred where what kind of pressure control is
required? - CORRECT ANSWER - precise
The simplest liquid level measurement device is a ? - CORRECT ANSWER -
Sight glass
The positive wire color on a type of K extension wire is? - CORRECT
ANSWER - Yellow
One meter is? - CORRECT ANSWER - 39.3 inches
The final step in commissioning before documenting is to? - CORRECT
ANSWER - Test the loop in its normal operating configuration
During threading, cutting oils are used to reduce? - CORRECT ANSWER -
Heat and friction
Asbestos gaskets are permitted as replacements in what type of installation? -
CORRECT ANSWER - none
Where can the degree or slope on a tubing run be found? - CORRECT
ANSWER - Installation drawings
The types of gaskets and gasket material to be used on a project are listed on? -
CORRECT ANSWER - A section of the specifications
What is an oriface plate? - CORRECT ANSWER - An in-line mounted
instrument
ANSWERS | ALREADY GRADED A+ | LATEST EXAM UPDATE
What mode must a controller be in before any changes are made to the process
variable? - CORRECT ANSWER - manual
The minimum value of the measured process range is considered to be? -
CORRECT ANSWER - Zero input value
Optimal gain is the MAXIMUM allowable value of gain in which the system is:
- CORRECT ANSWER - stable
Which of the following must be determined before selecting a pressure reducing
regulation? - CORRECT ANSWER - Capacity required
Pressure is expressed mathematically as: - CORRECT ANSWER - P=F/A
Loop testing involves simulation of the? - CORRECT ANSWER - Process
variable
A bubbler is used as feedback in what type of system? - CORRECT ANSWER
- pneumatic
A temperature measuring device that produced a voltage as a temperature
changes is a ? - CORRECT ANSWER - Thermocouple
All of the following valves are used to regulate flow except? - CORRECT
ANSWER - Gate valve
,Which drawing shows the height, width, and depth of a particular installation? -
CORRECT ANSWER - isometric drawing
Which of the following tools should be used to remove old packing from the
packing gland? - CORRECT ANSWER - Packing extractor
Which wiring diagram does NOT show discrete conductors from end to end, but
in a bundle? - CORRECT ANSWER - Raceway diagram
When used as a film between two surfaces, lubricants will reduce all of the
following EXCEPT: - CORRECT ANSWER - leakage
A proportional band of 100% is equivalent to a gain of? - CORRECT
ANSWER - 1
The component in an instrument system that detects process change is the? -
CORRECT ANSWER - Primary element
A process transmitter connected across an oriface plate measures? - CORRECT
ANSWER - The differential pressure across the plate
What communication protocol has become the most commonly used? -
CORRECT ANSWER - Hart
What is the first step in troubleshooting a problem in a system? - CORRECT
ANSWER - Verify that there is a problem
Cutting oils are classified as? - CORRECT ANSWER - active and inactive
, Electronic instrument signal leads can be influenced by? - CORRECT
ANSWER - noise
Pilot operated regulators are preferred where what kind of pressure control is
required? - CORRECT ANSWER - precise
The simplest liquid level measurement device is a ? - CORRECT ANSWER -
Sight glass
The positive wire color on a type of K extension wire is? - CORRECT
ANSWER - Yellow
One meter is? - CORRECT ANSWER - 39.3 inches
The final step in commissioning before documenting is to? - CORRECT
ANSWER - Test the loop in its normal operating configuration
During threading, cutting oils are used to reduce? - CORRECT ANSWER -
Heat and friction
Asbestos gaskets are permitted as replacements in what type of installation? -
CORRECT ANSWER - none
Where can the degree or slope on a tubing run be found? - CORRECT
ANSWER - Installation drawings
The types of gaskets and gasket material to be used on a project are listed on? -
CORRECT ANSWER - A section of the specifications
What is an oriface plate? - CORRECT ANSWER - An in-line mounted
instrument
