WELD 321 FINAL EXAM QUESTIONS
AND ANSWERS | 2026 UPDATE | 100%
CORRECT.
An actuator controls physical actions - ANS true
systems that assume the motion has taken place are called open loop - ANS true
an error in positioning caused by the reversal of travel direction is hysteresis error -
ANS false-backlash error
repeatability is defined as the range of positions attained when the system is repeatedly
commanded to one location under identical conditions - ANS true
absolute encoders do not lose their position when powered off - ANS true
which answer is not an example of a sensor
-stepper motor
-thermocouple
-proximity switch
-light curtain - ANS stepper motor
on Panasonic a ___ command branches the next action according to the results of a condition
test
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 25
,-increment
-if
-local
-set
-none are correct - ANS if
____ is the most common master controller for discreet operations such as assembly
-actuator
-industrial PC
-PLC
-robot - ANS PLC
what tier of master controller coordinates the functions of multiple PLCs, DCSs, and other
automated devices
-cell controllers
-corporate controllers
-process controllers
-vision controllers - ANS cell controllers
____ control physical actions for the process controller
-thermocouples
-sensors
-actuators
-fixtures - ANS actuators
the Panasonic ___ command specifies destinations within the program
-increment
-call
-jump
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 25
, -label - ANS label
which answer is a TYP f(x) performed by a robot controller when acting as cell master controller
on a small/simple cell
-manage I/O
-monitor complex safety devices
-operate vision systems
-coordinate multiple robots - ANS manage I/O
the ___ amplifier is the industry workhorse and most common type of servo motion amplifier
-linear
-pulse width modulation (PWM)
pulse frequency modulation (PFM) - ANS PWM
a stepper motor is __
-common used with open loop control
-able to retain its position on power failure
-the smallest electrical machine increment - ANS commonly used with open loop control
precision/accuracy is __
-the measured difference btwn the actual position and the commanded position
-the smallest electrical machine increment
-the range of positions attained when a system is repeatedly commanded to one location -
ANS the measured difference btwn the actual position and the commanded position
a linear servo motor system is __
-the smallest electrical machine increment
-used without an encoder
-commonly used with open loop control
@COPYRIGHT ALL RIGHTS RESERVED PAGE 3 OF 25
AND ANSWERS | 2026 UPDATE | 100%
CORRECT.
An actuator controls physical actions - ANS true
systems that assume the motion has taken place are called open loop - ANS true
an error in positioning caused by the reversal of travel direction is hysteresis error -
ANS false-backlash error
repeatability is defined as the range of positions attained when the system is repeatedly
commanded to one location under identical conditions - ANS true
absolute encoders do not lose their position when powered off - ANS true
which answer is not an example of a sensor
-stepper motor
-thermocouple
-proximity switch
-light curtain - ANS stepper motor
on Panasonic a ___ command branches the next action according to the results of a condition
test
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 25
,-increment
-if
-local
-set
-none are correct - ANS if
____ is the most common master controller for discreet operations such as assembly
-actuator
-industrial PC
-PLC
-robot - ANS PLC
what tier of master controller coordinates the functions of multiple PLCs, DCSs, and other
automated devices
-cell controllers
-corporate controllers
-process controllers
-vision controllers - ANS cell controllers
____ control physical actions for the process controller
-thermocouples
-sensors
-actuators
-fixtures - ANS actuators
the Panasonic ___ command specifies destinations within the program
-increment
-call
-jump
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 25
, -label - ANS label
which answer is a TYP f(x) performed by a robot controller when acting as cell master controller
on a small/simple cell
-manage I/O
-monitor complex safety devices
-operate vision systems
-coordinate multiple robots - ANS manage I/O
the ___ amplifier is the industry workhorse and most common type of servo motion amplifier
-linear
-pulse width modulation (PWM)
pulse frequency modulation (PFM) - ANS PWM
a stepper motor is __
-common used with open loop control
-able to retain its position on power failure
-the smallest electrical machine increment - ANS commonly used with open loop control
precision/accuracy is __
-the measured difference btwn the actual position and the commanded position
-the smallest electrical machine increment
-the range of positions attained when a system is repeatedly commanded to one location -
ANS the measured difference btwn the actual position and the commanded position
a linear servo motor system is __
-the smallest electrical machine increment
-used without an encoder
-commonly used with open loop control
@COPYRIGHT ALL RIGHTS RESERVED PAGE 3 OF 25
