Allied & ICAR Exam Bank • ALLIED_2784 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:

In an open belt drive, the driver pulley diameter is $200\text{ mm}$ rotating at $1440\text{ rpm}$. To drive the driven shaft at $480\text{ rpm}$ neglecting slip and belt thickness, the driven pulley diameter in mm must be:

Answer Key:

600

Step-by-Step Solution & Explanation

Speed ratio $N_1 D_1 = N_2 D_2 \implies D_2 = \frac{1440 \times 200}{480} = 600\text{ mm}$.
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