Subtopic: Overload safety devices used in farm machinery
Question Statement:
An over-running clutch installed in the drive line of a tractor-driven rotary cutter is essential to prevent:
Options:
(A) Excessive fuel consumption at part throttle
(B) High implement inertia from back-driving the tractor transmission and PTO when the clutch is disengaged
(C) Excessive vertical draft on the tractor lower links
(D) Overheating of the tractor battery
Answer Key:
B
Step-by-Step Solution & Explanation
High rotary inertia implements continue spinning due to angular momentum when the tractor engine decelerates or the master clutch is disengaged. Without an overrunning clutch, this momentum back-drives the transmission, pushing the tractor forward unexpectedly.