(LU) ENGI 428 CNC & Programming Logic Chips - Midterm Exam Review .

ENGI 428




CNC & Programming Logic
Chips




MIDTERM EXAM REVIEW




©LU 2024/2025

,1. Which of the following is NOT a typical component of CNC
systems?
a) CNC controller
b) Servo motor
c) Hydraulic pump
d) Stepper motor
Answer: c) Hydraulic pump
Rationale: Hydraulic pumps are not typically part of CNC
systems, which primarily rely on electrical components for motion
control.


2. In CNC programming, G-code is used to represent which of
the following?
a) Tool path instructions
b) Speed control
c) Feed rate adjustments
d) All of the above
Answer: d) All of the above
Rationale: G-code encompasses multiple instructions,
including tool path, speed, and feed rate for machine operation.


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, 3. What is the purpose of a Tool Offset in CNC programming?
a) To calibrate the workpiece
b) To adjust the position of the tool
c) To determine the material type
d) To control the spindle speed
Answer: b) To adjust the position of the tool
Rationale: Tool offsets are used to compensate for the length
and diameter of tools, ensuring accurate cutting depth and
dimensions.


4. Which of the following programming languages is widely used
for CNC machine control?
a) BASIC
b) G-code
c) C++
d) Java
Answer: b) G-code
Rationale: G-code is the standard programming language
specifically designed for CNC machine operation.


5. What is the primary purpose of feed rate in CNC machining?

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