Question Bank • QB_FM_143 NAT • 2 Marks

Section 2: Farm Machinery

Farm Machinery

Subtopic: Functional requirements, principles of working, construction and operation of manual, animal, tractor and renewable energy operated equipment for tillage, sowing, planting, fertilizer application, inter-cultivation, spraying, mowing, chaff cutting, harvesting and threshing

Question Statement:

A rasp-bar threshing cylinder of diameter $550\text{ mm}$ rotates at $800\text{ rpm}$. Calculate the peripheral tip speed of the cylinder in $\text{m/s}$ (round off to 2 decimal places).

Answer Key:

23.04

Step-by-Step Solution & Explanation

Peripheral speed of threshing cylinder: $v = \frac{\pi D N}{60} = \frac{\pi \times 0.550\text{ m} \times 800\text{ rpm}}{60} = \frac{1382.3}{60} \approx 23.038\text{ m/s}$ Acceptable range: $22.9 - 23.2\text{ m/s}$.
← Previous (QB_FM_ADV_074) Next (QB_FM_GATE_001) →

Practice In Authentic CBT Exam Interface

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

Launch CBT Mock Test