Allied & ICAR Exam Bank • ALLIED_2786 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 standard V-belt drive has groove angle $2\beta = 40^\circ$ (semi-groove angle $\beta = 20^\circ$). If the coefficient of friction is $\mu = 0.3$, the virtual coefficient of friction $\mu' = \mu / \sin\beta$ (with $\sin 20^\circ = 0.342$) is:

Answer Key:

0.88

Step-by-Step Solution & Explanation

$\mu' = \frac{0.3}{\sin 20^\circ} = \frac{0.3}{0.342} \approx 0.877$.
← Previous (ALLIED_2785) Next (ALLIED_2787) →

Practice In Authentic CBT Exam Interface

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

Launch CBT Mock Test