Subtopic: Overload safety devices used in farm machinery
Question Statement:
Machine Design: Design and selection of machine elements – gears, pulleys, chains and sprockets and belts; overload safety devices used in farm machinery; measurement of force, stress, torque, speed, displacement and acceleration on machine elements - shafts, couplings, keys, bearings and knuckle joints.
A pair of straight teeth spur gears is transmitting power at 500 rpm. The pinion has 16 standard full-depth involute teeth of module 8 mm. The pitch line velocity of the pinion in m s⁻¹ (rounded to 2 decimals) is ______.
Official Answer Key:
3.30 to 3.40
Step-by-Step Solution & Explanation
Pitch circle diameter of pinion, D = module × teeth = 8 mm × 16 = 128 mm = 0.128 m.
Pitch line velocity v = πDN/60, with N = 500 rpm:
v = π × 0.128 × 500 / 60 = 201.06 / 60 = 3.35 m/s. Answer: within 3.30–3.40.
Practice This in Real CBT Exam Interface
Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.