PLTW CIM End of the Year Exam Study
Guide Multiple Choice Questions and
Answers
1. Which concept is BEST classified as variable cost
A) Building rental
B) Lighting
C) Raw materials
D) Internet service
Answer C) Raw Materials
2. A manufacturing facility uses the robotic arm shown in the
diagram. How many degrees of freedom does the robotic arm
have?
A) 2
B) 3
C) 4
D) 5
Answer C) 4
3. A manufacturer uses only one type of CAM software but has
many different types and brands of CNC machines. How is the
,programming customized to meet the specifications of each
machine?
A) Code is added by hand for each of the different machines
B) A postprocessor is used in conjunction with the CAM software
C) A program called a machine customizer is used to edit the code
D)Each machine must use different CAM software
Answer B) A postprocessor is used in conjunction with the CAM software
4. What is the standard for behavior of professional groups BEST
known as?
A) A code of ethics
B) A code of conduct
C) An oath of allegiance
D) An oath of honor
Answer A) A code of ethics
5. In order for the robot to draw the line from point A to point B
with no charge in Z-height, which joint would need to move?
A) 4
B) 3
C) 2
D) 1
Answer D) 1
,6. Which of the following control techniques provides the GREATEST
amount of positional accuracy
A) Closed loop with pnuematic power
B) Closed loop with electric power
C) Open loop with pnuematic power
D) Open loop with hydraulic power
Answer B) Closed loop with electric power
7. The images above perform the same function using two different
program- ming languages. Use the program that corresponds to the
one used in your course to answer the question below.
A motor, switch, and light sensor are connected to the
appropriate microcon- troller. The switch is pressed immediately
before the program is executed, then held for 5 seconds. When the
program is executed, the light sensor initially reports a value of
240 for 3 seconds, then continuously reports a value of 150. What is
the best description of the motor power/speed through the
duration of the program?
B) The motor turns CW for 3 seconds, then stops.
C) The motor turns CW for 5 seconds, then stops.
D) The motor remains off for 2 seconds; turns CW for 3 seconds, then
stops.
, Answer A) The motor remains off for 3 seconds; turns CW for 2 seconds, then stops.
8. What are absolute coordinates?
A) The programing code to control CNC machines
B) A system in which positions are given with respect to a fixed point
C) A system in which each position is taken from the one prior
D) A combination of information which describes how a feature is
to be ma- chined
Answer B)A system in which positions are given with respect to a fixed point
9. What is Kaizen Manufacturing?
A) A manufacturing system that eliminates waste by reducing the
time in be- tween production and shipping
B) A manufacturing process that calls for constant improvement
of the work environment with employee input
C) A manufacturing system that eliminates waste while sacrificing
little produc- tivity
D) A manufacturing system that reuses waste products and repurposes
them to
increase efficiency
Answer B)A manufacturing process that calls for constant improvement of the work
environment with employee input
10. When milling a hard material as opposed to a soft
Guide Multiple Choice Questions and
Answers
1. Which concept is BEST classified as variable cost
A) Building rental
B) Lighting
C) Raw materials
D) Internet service
Answer C) Raw Materials
2. A manufacturing facility uses the robotic arm shown in the
diagram. How many degrees of freedom does the robotic arm
have?
A) 2
B) 3
C) 4
D) 5
Answer C) 4
3. A manufacturer uses only one type of CAM software but has
many different types and brands of CNC machines. How is the
,programming customized to meet the specifications of each
machine?
A) Code is added by hand for each of the different machines
B) A postprocessor is used in conjunction with the CAM software
C) A program called a machine customizer is used to edit the code
D)Each machine must use different CAM software
Answer B) A postprocessor is used in conjunction with the CAM software
4. What is the standard for behavior of professional groups BEST
known as?
A) A code of ethics
B) A code of conduct
C) An oath of allegiance
D) An oath of honor
Answer A) A code of ethics
5. In order for the robot to draw the line from point A to point B
with no charge in Z-height, which joint would need to move?
A) 4
B) 3
C) 2
D) 1
Answer D) 1
,6. Which of the following control techniques provides the GREATEST
amount of positional accuracy
A) Closed loop with pnuematic power
B) Closed loop with electric power
C) Open loop with pnuematic power
D) Open loop with hydraulic power
Answer B) Closed loop with electric power
7. The images above perform the same function using two different
program- ming languages. Use the program that corresponds to the
one used in your course to answer the question below.
A motor, switch, and light sensor are connected to the
appropriate microcon- troller. The switch is pressed immediately
before the program is executed, then held for 5 seconds. When the
program is executed, the light sensor initially reports a value of
240 for 3 seconds, then continuously reports a value of 150. What is
the best description of the motor power/speed through the
duration of the program?
B) The motor turns CW for 3 seconds, then stops.
C) The motor turns CW for 5 seconds, then stops.
D) The motor remains off for 2 seconds; turns CW for 3 seconds, then
stops.
, Answer A) The motor remains off for 3 seconds; turns CW for 2 seconds, then stops.
8. What are absolute coordinates?
A) The programing code to control CNC machines
B) A system in which positions are given with respect to a fixed point
C) A system in which each position is taken from the one prior
D) A combination of information which describes how a feature is
to be ma- chined
Answer B)A system in which positions are given with respect to a fixed point
9. What is Kaizen Manufacturing?
A) A manufacturing system that eliminates waste by reducing the
time in be- tween production and shipping
B) A manufacturing process that calls for constant improvement
of the work environment with employee input
C) A manufacturing system that eliminates waste while sacrificing
little produc- tivity
D) A manufacturing system that reuses waste products and repurposes
them to
increase efficiency
Answer B)A manufacturing process that calls for constant improvement of the work
environment with employee input
10. When milling a hard material as opposed to a soft
