Question Bank • QB_FM_109 NAT • 2 Marks

Section 2: Farm Machinery

Machine Design

Subtopic: Design and selection of machine elements – gears, pulleys, chains and sprockets and belts

Question Statement:

A cast iron spur pinion with 24 teeth of module $5\text{ mm}$ transmits power at $960\text{ rpm}$. Calculate the pitch line velocity of the pinion in $\text{m/s}$.

Answer Key:

6.03

Step-by-Step Solution & Explanation

Pitch circle diameter of pinion: $d = m \times T = 5 \times 24 = 120\text{ mm} = 0.12\text{ m}$ Pitch line velocity: $v = \frac{\pi d N}{60} = \frac{\pi \times 0.12 \times 960}{60} = 1.92 \pi \approx 6.032\text{ m/s}$
← Previous (QB_FM_099) Next (QB_FM_115) →

Practice In Authentic CBT Exam Interface

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

Launch CBT Mock Test