Exam (elaborations)
NCCER REVIEW QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
- Course
- Institution
NCCER REVIEW QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
[Show more]
Content preview
NCCER REVIEW QUESTIONS ANDANSWERS WITH SOLUTIONS 2024
The density of a liquid affects the displacer's:
length
height
buoyancy - ANSWER buoyancy
What mode MUST the controller be in before any changes are made to the process variable?
automatic
manual
shut-down
power off - ANSWER manual
Bills of material are found in:
general arrangement drawings
P&ID
piping orthographics
instrument detail drawings - ANSWER general arrangement drawings
When bench calibrating a temperature RTD transmitter, the instrument technician should apply:
hot air pressure
cold air pressure
resistance
voltage - ANSWER resistance
,Before working on a de-energized circuit containing a capacitor, what must be done?
discharge the capacitor
re-energize the circuit
defibrillate the system
remove the lockouts - ANSWER discharge the capacitor
The MINIMUM value of the measured process range is considered to be:
upper measured value
3 psi and 4 ma
zero input value
span value - ANSWER 3 psi and 4 ma
A solenoid valve is often used to
regulate temperature
direct airflow that opens or closes an air operated valve
regulate the amp that is used to open/close control valve
control the voltage that is used to open/close contacts - ANSWER direct airflow that opens or closes an
air-operated valve
Viscosity is analyzed in all of the following ways EXCEPT:
the falling all method
the viscositron method
the rotating disc method
the capillary method - ANSWER the viscositron method
,The process parameter that is selected for control is called the:
process rate
controlled energy
process setpoint
controlled variable - ANSWER controlled variable
Optimal gain is the MAXIMUM allowable value of gain in which the system is:
stable
oscillating
at its highest amplitude
NOT responding - ANSWER stable
Carbon dioxide is produced commercially:
by extraction from the atmosphere
as a byproduct of manufacturing
by extraction from ocean water
through chemical bonding - ANSWER as a byproduct of manufacturing
The MOST reliable relay is a/an:
EMR
pneumatic
SSR
LED - ANSWER SSR
, In modulating control, the first step is to compute the error between controlled variable and setpoint.
The second step is to produce a(n):
output signal
modulating mode
feedback set point
process feedback - ANSWER output signal
A dashpot timer relay:
is well suited for fast on-off cycles
is a type of pneumatic relay
has NO moving parts
requires a long reset time - ANSWER is a type of pneumatic relay
A photosensor is a:
double throw double pole switch
silicone-controlled rectifier
variable resistor
transformer - ANSWER silicone-controlled rectifier
MOST pneumatic receivers operate in the range of:
1-5 psi
0-10 psi
3-15 psi
0-100 psi - ANSWER 3-15 psi
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Performance. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67163 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now