MSSC Test 3 Questions with Verified
Solutions
In basic CNC program development, which part do most programmers write first? -
ANSWER-- Toolpath block
When adjusting actuator speed with a flow control valve, which direction should you turn
the valve's knob to decrease speed? - ANSWER-Clockwise
Which direction should a pressure regulator knob be turned in order to increase
pressure? - ANSWER-Clockwise
When adjusting the position of a limit switch, what should be done before manually
moving the actuator to the desired position? - ANSWER-- Disable the machine outputs
What must be loosened before turning the flow control valve knob to adjust actuator
speed? - ANSWER-- Locking nut
When should thread-locking fluid be applied to a fastener? - ANSWER-- Before
installation
What happens if a fastener is over-torqued? - ANSWER-- All of the above
What is used to soften the impact of a rotary actuator's internal cylinder against hard
stops? - ANSWER-- Adjustable cushion
Which of the following provides limited adjustment of a linear actuator's stroke? -
ANSWER-- Threaded rod and head
Which type of limit switch is the least common? - ANSWER-- None of the above
True or false: Filters are commonly combined with pressure regulators. - ANSWER--
True
Which of the following is NOT a common sensor mounting method? - ANSWER--
Threaded rod and head-mounted
What type of transistor supplies voltage when activated, causing the signal from the
sensor to turn on? - ANSWER-- PNP
, Troubleshooting a machine problem is determining the cause and __________. -
ANSWER-- Taking the steps needed to solve the problem
The __________ on a boiler burner makes it easy to detect a main flame. - ANSWER--
UV fire eye
Machine lubrication leaks can drip onto the floor and create a hazardous condition for
employees or cause damage to the product. Therefore, if a leak occurs, __________. -
ANSWER-- Notify the appropriate personnel to have the leak repaired immediately
A critical system component is defined as what? - ANSWER-- A component essential
for continued system operation
A human-machine interface or HMI panel is where most __________ are displayed. -
ANSWER-- Machine alarms or error messages
A thorough check for a history of similar problems should occur __________. -
ANSWER-- On problems that keep recurring at regular intervals
An equipment manufacturer __________. - ANSWER-- Is the best source of technical
information on a specific piece of equipment
Knowledge of machine history is a good resource in troubleshooting machine problems
because it would include information on __________. - ANSWER-- All of the above
For example, many plants use an announcement system called __________ (Japanese
for signboard) to announce the need for reactive maintenance. - ANSWER-- Andon
Manual data input, computer-aided manufacturing, and conversational are all
__________. - ANSWER-- Programming methods
What portion of the part program follows the toolpath blocks? - ANSWER-- End block
M-codes are NOT __________. - ANSWER-- Used to set the mode of operation
Before running a CNC program the operator should __________. - ANSWER-- Home
the axes
G-codes are modal, meaning they __________. - ANSWER-- Remain active until
cancelled by another G code
What is a series of numbered instructions that control the machine's movements and
functions to create a part? - ANSWER-- CNC part program
G-codes are __________. - ANSWER-- Preparatory commands
Solutions
In basic CNC program development, which part do most programmers write first? -
ANSWER-- Toolpath block
When adjusting actuator speed with a flow control valve, which direction should you turn
the valve's knob to decrease speed? - ANSWER-Clockwise
Which direction should a pressure regulator knob be turned in order to increase
pressure? - ANSWER-Clockwise
When adjusting the position of a limit switch, what should be done before manually
moving the actuator to the desired position? - ANSWER-- Disable the machine outputs
What must be loosened before turning the flow control valve knob to adjust actuator
speed? - ANSWER-- Locking nut
When should thread-locking fluid be applied to a fastener? - ANSWER-- Before
installation
What happens if a fastener is over-torqued? - ANSWER-- All of the above
What is used to soften the impact of a rotary actuator's internal cylinder against hard
stops? - ANSWER-- Adjustable cushion
Which of the following provides limited adjustment of a linear actuator's stroke? -
ANSWER-- Threaded rod and head
Which type of limit switch is the least common? - ANSWER-- None of the above
True or false: Filters are commonly combined with pressure regulators. - ANSWER--
True
Which of the following is NOT a common sensor mounting method? - ANSWER--
Threaded rod and head-mounted
What type of transistor supplies voltage when activated, causing the signal from the
sensor to turn on? - ANSWER-- PNP
, Troubleshooting a machine problem is determining the cause and __________. -
ANSWER-- Taking the steps needed to solve the problem
The __________ on a boiler burner makes it easy to detect a main flame. - ANSWER--
UV fire eye
Machine lubrication leaks can drip onto the floor and create a hazardous condition for
employees or cause damage to the product. Therefore, if a leak occurs, __________. -
ANSWER-- Notify the appropriate personnel to have the leak repaired immediately
A critical system component is defined as what? - ANSWER-- A component essential
for continued system operation
A human-machine interface or HMI panel is where most __________ are displayed. -
ANSWER-- Machine alarms or error messages
A thorough check for a history of similar problems should occur __________. -
ANSWER-- On problems that keep recurring at regular intervals
An equipment manufacturer __________. - ANSWER-- Is the best source of technical
information on a specific piece of equipment
Knowledge of machine history is a good resource in troubleshooting machine problems
because it would include information on __________. - ANSWER-- All of the above
For example, many plants use an announcement system called __________ (Japanese
for signboard) to announce the need for reactive maintenance. - ANSWER-- Andon
Manual data input, computer-aided manufacturing, and conversational are all
__________. - ANSWER-- Programming methods
What portion of the part program follows the toolpath blocks? - ANSWER-- End block
M-codes are NOT __________. - ANSWER-- Used to set the mode of operation
Before running a CNC program the operator should __________. - ANSWER-- Home
the axes
G-codes are modal, meaning they __________. - ANSWER-- Remain active until
cancelled by another G code
What is a series of numbered instructions that control the machine's movements and
functions to create a part? - ANSWER-- CNC part program
G-codes are __________. - ANSWER-- Preparatory commands
