NOCTI MECHATRONICS REVIEW TIPS ANSWERS
AND QUESTIONS SET A+
✔✔Calculate the gear ratio required for a specific mechanical advantage. - ✔✔Gear
Ratio formula: Driven gear teeth divided by Driver gear teeth
✔✔Interpret a complex resistor color code with multiple bands. - ✔✔Interpreting a
complex resistor color code—typically involving 5 or 6 bands—requires identifying the
orientation, decoding significant digits, applying the multiplier, and determining the
tolerance or temperature coefficient. These resistors are generally used for higher
precision (1% or better) compared to 4-band types.
✔✔Develop a troubleshooting guide for common PLC errors. - ✔✔Verify hardware,
Inspect for things like loose wiring, if not hardware look at software or logical errors in
the programming.
✔✔Design a material handling plan to minimize risk of injury. - ✔✔prioritizing
mechanical aids, enforcing proper ergonomic lifting techniques, optimizing workplace
layout, and implementing training programs
✔✔Define gear ratio. - ✔✔the ratio between the rates at which the last and first gears
rotate.
✔✔How do you calculate the gear ratio between two gears? - ✔✔divide the number of
teeth on the driven (output) gear by the number of teeth on the driving (input) gear
✔✔Describe the impact of gear ratio on speed and torque. - ✔✔a high gear ratio (small
driving gear, large driven gear) increases output torque while reducing speed, and a low
gear ratio (large driving gear, small driven gear) increases top speed while reducing
torque
✔✔What is the purpose of using different gear ratios in machines? - ✔✔to control the
trade-off between speed and torque (rotational force)
, ✔✔Explain how gear ratios affect mechanical advantage. - ✔✔by defining the
relationship between input and output torque and speed
✔✔What is linear motion? - ✔✔one-dimensional movement where an object travels in a
straight line
✔✔List two examples of linear motion in machinery. - ✔✔ball screws in CNC machine
tools for precise table positioning and electric linear actuators for pushing/pulling
mechanisms in automation
✔✔How is linear motion achieved in a mechanical system? - ✔✔converting rotary
energy—usually from a motor—into straight-line movement using mechanisms like ball
screws, rack-and-pinion gears, or belt drives
✔✔Describe the function of a lead screw in linear motion. - ✔✔a mechanical actuator
that translates rotary motion (torque) into precise linear motion (thrust) by using sliding
contact between a threaded shaft and a nut
✔✔Explain the difference between linear and rotary motion. - ✔✔Linear motion is
movement in a straight line (left-to-right, up-down), while rotary motion is movement in a
circular path around a fixed axis
✔✔Which of the gear patterns below will produce more torque? - ✔✔The top gear set
(Gear Reduction) will produce more torque. In this setup, a small drive gear turns a
larger driven gear. This trade-off reduces speed but multiplies the output force (torque).
✔✔Which of the following will produce a higher speed? - ✔✔The bottom gear set
(Overdrive) will produce a higher speed. Because the drive gear is larger than the
driven gear, the output gear must spin multiple times for every single rotation of the
input.
✔✔For the top set, if the drive gear makes 1 rotation, how many rotations will the driven
gear make? - ✔✔The driven gear will make 0.5 rotations (half a turn).
✔✔Explain the significance of the tolerance band in resistors. - ✔✔indicates the
maximum allowable percentage deviation from its nominal resistance value, signifying
the component's accuracy
✔✔Why is it important to correctly interpret resistor color codes? - ✔✔to identify a
resistor's resistance value, multiplier, and tolerance (accuracy), ensuring circuit
functionality and preventing damage
✔✔Define a series circuit. - ✔✔an electrical pathway where all components are
connected end-to-end to form a single, continuous loop for current flow
AND QUESTIONS SET A+
✔✔Calculate the gear ratio required for a specific mechanical advantage. - ✔✔Gear
Ratio formula: Driven gear teeth divided by Driver gear teeth
✔✔Interpret a complex resistor color code with multiple bands. - ✔✔Interpreting a
complex resistor color code—typically involving 5 or 6 bands—requires identifying the
orientation, decoding significant digits, applying the multiplier, and determining the
tolerance or temperature coefficient. These resistors are generally used for higher
precision (1% or better) compared to 4-band types.
✔✔Develop a troubleshooting guide for common PLC errors. - ✔✔Verify hardware,
Inspect for things like loose wiring, if not hardware look at software or logical errors in
the programming.
✔✔Design a material handling plan to minimize risk of injury. - ✔✔prioritizing
mechanical aids, enforcing proper ergonomic lifting techniques, optimizing workplace
layout, and implementing training programs
✔✔Define gear ratio. - ✔✔the ratio between the rates at which the last and first gears
rotate.
✔✔How do you calculate the gear ratio between two gears? - ✔✔divide the number of
teeth on the driven (output) gear by the number of teeth on the driving (input) gear
✔✔Describe the impact of gear ratio on speed and torque. - ✔✔a high gear ratio (small
driving gear, large driven gear) increases output torque while reducing speed, and a low
gear ratio (large driving gear, small driven gear) increases top speed while reducing
torque
✔✔What is the purpose of using different gear ratios in machines? - ✔✔to control the
trade-off between speed and torque (rotational force)
, ✔✔Explain how gear ratios affect mechanical advantage. - ✔✔by defining the
relationship between input and output torque and speed
✔✔What is linear motion? - ✔✔one-dimensional movement where an object travels in a
straight line
✔✔List two examples of linear motion in machinery. - ✔✔ball screws in CNC machine
tools for precise table positioning and electric linear actuators for pushing/pulling
mechanisms in automation
✔✔How is linear motion achieved in a mechanical system? - ✔✔converting rotary
energy—usually from a motor—into straight-line movement using mechanisms like ball
screws, rack-and-pinion gears, or belt drives
✔✔Describe the function of a lead screw in linear motion. - ✔✔a mechanical actuator
that translates rotary motion (torque) into precise linear motion (thrust) by using sliding
contact between a threaded shaft and a nut
✔✔Explain the difference between linear and rotary motion. - ✔✔Linear motion is
movement in a straight line (left-to-right, up-down), while rotary motion is movement in a
circular path around a fixed axis
✔✔Which of the gear patterns below will produce more torque? - ✔✔The top gear set
(Gear Reduction) will produce more torque. In this setup, a small drive gear turns a
larger driven gear. This trade-off reduces speed but multiplies the output force (torque).
✔✔Which of the following will produce a higher speed? - ✔✔The bottom gear set
(Overdrive) will produce a higher speed. Because the drive gear is larger than the
driven gear, the output gear must spin multiple times for every single rotation of the
input.
✔✔For the top set, if the drive gear makes 1 rotation, how many rotations will the driven
gear make? - ✔✔The driven gear will make 0.5 rotations (half a turn).
✔✔Explain the significance of the tolerance band in resistors. - ✔✔indicates the
maximum allowable percentage deviation from its nominal resistance value, signifying
the component's accuracy
✔✔Why is it important to correctly interpret resistor color codes? - ✔✔to identify a
resistor's resistance value, multiplier, and tolerance (accuracy), ensuring circuit
functionality and preventing damage
✔✔Define a series circuit. - ✔✔an electrical pathway where all components are
connected end-to-end to form a single, continuous loop for current flow
