NCCER PART #1 EXAM QUESTIONS
WITH COMPLETE ANSWERS
Field-bus - Answer-A technology bypassing conventional I/O by using direct
communications between smart field devices and associated control processors is:
SCADA
WAN
Peer-to-peer
Fieldbus
As a hot standby at the central processor - Answer-Redundant controllers in a
distributed control system reside:
In pairs in the same enclosure
In a master-slave relationship at assigned locations
As a hot standby at the central processor.
On a different communications segments.
Ziegler and Nichols - Answer-The ultimate period method for tuning a controller was first
proposed by:
Naylor and Tunstall
Mitchem and Smith
Hobbs and Lewley
Ziegler and Nichols
Color properties of oxygen - Answer-One method of oxygen analysis focuses on the:
Color properties of oxygen
Dissolvability of oxygen in water
Liquefaction properties of oxygen
,Paramagnetic properties of oxygen
Carbon - Answer-A Piece of pipe has an AISI classification of A105, the major alloy is:
Carbon
Nickel
Nickel-Chrome
Chrome-Vanadium
Oxygen Content - Answer-Atmosphere testing must be conducted before entry into a
confined space to check for:
Humidity level
Heat level
Oxygen content
MSDS content
Material Safety Data Sheet - Answer-Which of the following contains information about
chemicals found on a job site?
Chemical Exposure Sheet
Material Safety Data Sheet
Manufactured Substance Data Sheet
Hazardous Exposure Sheet
Nonferrous Alloy - Answer-Which of the following materials is selected when resistance
to corrosion or high temperatures is required?
High-carbon steel
Low-carbon steel
Nickel Alloy
Nonferrous Alloy
, Metal ring joint - Answer-Which of the following is a type of gasket used in high-
pressure systems?
Teflon
Fiberglass
Asbestos
Metal ring joint
Sulfured mineral oils - Answer-Examples of inactive cutting oil include all of the following
EXCEPT:
Straight mineral oils
Fatty and mineral oil blends
Sulfured mineral oils
Fatty oils
Graphite Paste - Answer-Which of the following thread sealant is MOST suitable for
service temperatures of 500 to 700 degrees Fahrenheit?
High-temperature epoxy
Teflon paste
High-temperature RTV silicone
Graphite paste
Ground-fault circuit interrupter (GFCI) - Answer-A system installed to provide protection
of equipment from line-to-ground fault damage is called:
Ground-fault circuit interrupter (GFCI)
An Uninterruptible Power Supply (UPS)
A ground-fault transformer
A distance relay
Hardness - Answer-Increasing the carbon content in steel results in an increase in:
WITH COMPLETE ANSWERS
Field-bus - Answer-A technology bypassing conventional I/O by using direct
communications between smart field devices and associated control processors is:
SCADA
WAN
Peer-to-peer
Fieldbus
As a hot standby at the central processor - Answer-Redundant controllers in a
distributed control system reside:
In pairs in the same enclosure
In a master-slave relationship at assigned locations
As a hot standby at the central processor.
On a different communications segments.
Ziegler and Nichols - Answer-The ultimate period method for tuning a controller was first
proposed by:
Naylor and Tunstall
Mitchem and Smith
Hobbs and Lewley
Ziegler and Nichols
Color properties of oxygen - Answer-One method of oxygen analysis focuses on the:
Color properties of oxygen
Dissolvability of oxygen in water
Liquefaction properties of oxygen
,Paramagnetic properties of oxygen
Carbon - Answer-A Piece of pipe has an AISI classification of A105, the major alloy is:
Carbon
Nickel
Nickel-Chrome
Chrome-Vanadium
Oxygen Content - Answer-Atmosphere testing must be conducted before entry into a
confined space to check for:
Humidity level
Heat level
Oxygen content
MSDS content
Material Safety Data Sheet - Answer-Which of the following contains information about
chemicals found on a job site?
Chemical Exposure Sheet
Material Safety Data Sheet
Manufactured Substance Data Sheet
Hazardous Exposure Sheet
Nonferrous Alloy - Answer-Which of the following materials is selected when resistance
to corrosion or high temperatures is required?
High-carbon steel
Low-carbon steel
Nickel Alloy
Nonferrous Alloy
, Metal ring joint - Answer-Which of the following is a type of gasket used in high-
pressure systems?
Teflon
Fiberglass
Asbestos
Metal ring joint
Sulfured mineral oils - Answer-Examples of inactive cutting oil include all of the following
EXCEPT:
Straight mineral oils
Fatty and mineral oil blends
Sulfured mineral oils
Fatty oils
Graphite Paste - Answer-Which of the following thread sealant is MOST suitable for
service temperatures of 500 to 700 degrees Fahrenheit?
High-temperature epoxy
Teflon paste
High-temperature RTV silicone
Graphite paste
Ground-fault circuit interrupter (GFCI) - Answer-A system installed to provide protection
of equipment from line-to-ground fault damage is called:
Ground-fault circuit interrupter (GFCI)
An Uninterruptible Power Supply (UPS)
A ground-fault transformer
A distance relay
Hardness - Answer-Increasing the carbon content in steel results in an increase in:
