NTN Fireteam Study Set Questions
and Answers | Latest Version |
2025/2026 | Correct & Verified
What is the purpose of gears in a machine?
✔✔To transmit motion and change speed or torque.
Why are ball bearings used in rotating shafts?
✔✔To reduce friction and allow smooth rotation.
What is the function of a pulley system?
✔✔To change the direction of force and reduce effort.
What does PSI measure in mechanical systems?
✔✔Pounds per square inch of pressure.
What happens to torque when the length of a wrench is increased?
✔✔Torque increases.
1
,Why is lubrication important in mechanical systems?
✔✔It reduces wear and friction between moving parts.
What is the function of a flywheel?
✔✔To store rotational energy and smooth engine operation.
Why is a lever considered a simple machine?
✔✔It uses a fulcrum to gain mechanical advantage.
What is the main advantage of a hydraulic system?
✔✔It multiplies force using fluid pressure.
What is the purpose of a clutch in a vehicle?
✔✔To engage or disengage power from the engine to the transmission.
What does RPM stand for in mechanics?
✔✔Revolutions Per Minute.
2
, Why is a chain drive used instead of a belt drive in some machines?
✔✔Chains can handle heavier loads without slipping.
What happens when gears of different sizes mesh together?
✔✔The smaller gear rotates faster than the larger one.
Why is a spring used in mechanical systems?
✔✔To store energy and absorb shock.
What is the purpose of a governor in an engine?
✔✔To regulate engine speed automatically.
Why is heat treatment applied to steel components?
✔✔To improve hardness, strength, or toughness.
What does a torque wrench measure?
✔✔The amount of twisting force applied to a bolt or nut.
3
and Answers | Latest Version |
2025/2026 | Correct & Verified
What is the purpose of gears in a machine?
✔✔To transmit motion and change speed or torque.
Why are ball bearings used in rotating shafts?
✔✔To reduce friction and allow smooth rotation.
What is the function of a pulley system?
✔✔To change the direction of force and reduce effort.
What does PSI measure in mechanical systems?
✔✔Pounds per square inch of pressure.
What happens to torque when the length of a wrench is increased?
✔✔Torque increases.
1
,Why is lubrication important in mechanical systems?
✔✔It reduces wear and friction between moving parts.
What is the function of a flywheel?
✔✔To store rotational energy and smooth engine operation.
Why is a lever considered a simple machine?
✔✔It uses a fulcrum to gain mechanical advantage.
What is the main advantage of a hydraulic system?
✔✔It multiplies force using fluid pressure.
What is the purpose of a clutch in a vehicle?
✔✔To engage or disengage power from the engine to the transmission.
What does RPM stand for in mechanics?
✔✔Revolutions Per Minute.
2
, Why is a chain drive used instead of a belt drive in some machines?
✔✔Chains can handle heavier loads without slipping.
What happens when gears of different sizes mesh together?
✔✔The smaller gear rotates faster than the larger one.
Why is a spring used in mechanical systems?
✔✔To store energy and absorb shock.
What is the purpose of a governor in an engine?
✔✔To regulate engine speed automatically.
Why is heat treatment applied to steel components?
✔✔To improve hardness, strength, or toughness.
What does a torque wrench measure?
✔✔The amount of twisting force applied to a bolt or nut.
3
