The essential features of a transmission dynamometer are shown in figure below (all dimension in mm). A is the driving pulley which runs at 600 RPM. B and C are jockey pulleys mounted on a horizontal beam pivoted at D, about which point the compete beam is balanced when at rest. E is the driven pulley and all portions of the belt between the pulleys are vertical. A, B and C are each 300 mm diameter and the thickness and weight of the belt are neglected. The length DF is 750 mm. Find: 1. The value of the weight W to maintain the beam in a horizontal position when 4.5 kW is being transmitted, and 2. The value of W, when the belt just begins to slip on pulley A. the coefficient of friction being 0.2 and maximum tension in the belt 1.5 kN. D 27-300 Driving pulley 127, -300-300- Driven pulley 750 W

The essential features of a transmission dynamometer are shown in figure below (all dimension in mm). A is the driving pulley which runs at 600 RPM. B and C are jockey pulleys mounted on a horizontal beam pivoted at D, about which point the compete beam is balanced when at rest. E is the driven pulley and all portions of the belt between the pulleys are vertical. A, B and C are each 300 mm diameter and the thickness and weight of the belt are neglected. The length DF is 750 mm. Find: 1. The value of the weight W to maintain the beam in a horizontal position when 4.5 kW is being transmitted, and 2. The value of W, when the belt just begins to slip on pulley A. the coefficient of friction being 0.2 and maximum tension in the belt 1.5 kN. D 27-300 Driving pulley 127, -300-300- Driven pulley 750 W

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.

Question

The essential features of a transmission dynamometer are shown in figure below (all
dimension in mm). A is the driving pulley which runs at 600 RPM. B and C are jockey
pulleys mounted on a horizontal beam pivoted at D, about which point the compete beam is
balanced when at rest. E is the driven pulley and all portions of the belt between the pulleys
are vertical. A, B and C are each 300 mm diameter and the thickness and weight of the belt
are neglected. The length DF is 750 mm. Find:
1. The value of the weight W to maintain the beam in a horizontal position when 4.5
kW is being transmitted, and
2. The value of W, when the belt just begins to slip on pulley A. the coefficient of
friction being 0.2 and maximum tension in the belt 1.5 kN.
Driven
pulley
IT
Driving
pulley
D
B
27-30
300-300-
127,
-750-
W

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