It is the ratio between the velocities of the driver and the follower or driven. Let d1 = Diameter of the driver, d2 = Diameter of the follower, N1 = Speed of the driver in r.p.m N2 = Speed of the follower in r.p.m therefore, Length of the belt that passes over the driver, in one minute = π d1.N1 Similarly, length of the belt that passes over the follower, in one minute = π d2 . N2
Since the length of belt that passes over the driver in one minute is equal to the length of belt that passes over the follower in one minute, therefore π d1.N1 = π d2 . N2 Therefore, Velocity ratio, N2/N1 = d1/d2.
Your go-to platform for competitive exams, job opportunities, and mining resources. Since 2019, we’ve been dedicated to providing quizzes, books, notes, and exam preparation materials to help you succeed in the mining industry.