Allied & ICAR Exam Bank • ALLIED_0121 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 chain drive connects a driver sprocket with 15 teeth to a driven sprocket with 45 teeth. If the driver rotates at $900\text{ rpm}$, the driven sprocket speed in rpm is:

Answer Key:

300

Step-by-Step Solution & Explanation

Speed ratio $N_2 / N_1 = z_1 / z_2 \implies N_2 = 900 \times (15 / 45) = 300\text{ rpm}$.
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