Allied & ICAR Exam Bank • ALLIED_2861 NAT • 2 Marks

Section 2: Farm Machinery

Farm Machinery

Subtopic: Hitch systems and hitching of tillage implements

Question Statement:

The standard PTO speed of $540\text{ rpm}$ is achieved with a 6-spline shaft of diameter $35\text{ mm}$ ($1\frac{3}{8}\text{ inch}$). The number of splines on a $1000\text{ rpm}$ standard $35\text{ mm}$ shaft is:

Answer Key:

21

Step-by-Step Solution & Explanation

Standard $1000\text{ rpm}$ PTO shaft ($1\frac{3}{8}"$) has 21 splines to prevent accidental coupling of $540\text{ rpm}$ implements.
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