Question Bank • QB_FM_006 MCQ • 1 Mark

Section 2: Farm Machinery

Machine Design

Subtopic: Overload safety devices used in farm machinery

Question Statement:

In a PTO-driven rotary tiller (rotavator), which of the following devices is most commonly employed to protect the transmission gears against sudden overload when the tines hit a stone?

Options:

  • (A) Slip clutch (friction clutch)
  • (B) Dog clutch
  • (C) Fluid coupling
  • (D) Centrifugal clutch

Answer Key:

A

Step-by-Step Solution & Explanation

A spring-loaded slip clutch (friction disc torque limiter) or a shear bolt is installed on the PTO drive shaft of rotavators to slip at a predetermined torque threshold, preventing catastrophic gear or shaft failure.
← Previous (QB_FM_020) Next (QB_FM_019) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test