Find power transmitted by cross type belt:

Find power transmitted by cross type belt drive connecting two pulley of diameter 45.0cm and 20.0cm that are 1.95m apart. The maximum permissible tension in belt is 1KN, coefficient of friction is 0.20 and speed of the larger pulley is 100rpm.

Sol: Given that

D₁ = Diameter of the driver = 45cm = 0.45m

R₁ = Radius of the driver = 0.225m

D₂ = Diameter of the driven = 20cm = 0.2m

R₂ = Radius of the driven = 0.1m

X = Distance between the centers of two pulleys = 1.95m

T₁ = Maximum permissible tension = 1000N

µ = Coefficient of friction = 0.20

N₁ = Speed of the driver(Larger pulley) in R.P.M. = 100RPM

As we know that,

Power Transmitted = (T₁-T₂).V/1000 Kw                                                                                                   ...(i)

Tension is in KN and V is in m/sec

First ve find the velocity of the belt, V = Velocity of the belt in m/sec.

Here take diameter and Rotation per minute of larger pulley

= pDN/60 m/sec, D is in meter and N is in Rotation per minute

= (3.14 X0.45 X 100) /60

= 2.36m/sec                                                                                                                       ...(ii)

Now Ratio of belt tension, T₁/T₂  = e^µθ                                                                                ...(iii)

Here we do not know the value of θ, For θ, first find the value of a, then by formula,

Angle of Lap for cross belt a = sin^-1(r₁ + r₂)/X

Posted Date: 10/18/2012 5:31:57 AM | Location : United States

Ask an Expert

Related Discussions:- Find power transmitted by cross type belt, Assignment Help, Ask Question on Find power transmitted by cross type belt, Get Answer, Expert's Help, Find power transmitted by cross type belt Discussions

Write discussion on Find power transmitted by cross type belt
Your posts are moderated

Write your message here..

Related Questions

How is aluminium conductor steel reinforced used, ACSR (Aluminium Conductor... ACSR (Aluminium Conductor Steel Reinforced) are used as  (A)  over head transmission lines.  (B)  super conductors. (C)  fuse  (D)  underground cables.

Derive the characteristic equations of motion, Derive the characteristic eq... Derive the characteristic equations of motion for the underdamped, critical damped and overdamped free damped vibration system. Write short notes on i. Fourier series and har

Chemistry, what is law of chemical combinations? what is law of chemical combinations?

Seam welding, Seam Welding Seam welding is different from spot welding ... Seam Welding Seam welding is different from spot welding by the fact that roller type electrodes are used in the former case. The principle and process of welding are the same

Simply supported beam.., how to calculate the distribution of shear force a... how to calculate the distribution of shear force and bending moment for a simply supported beam

The welding arc, THE WELDING ARC The heat that is developed at the cath... THE WELDING ARC The heat that is developed at the cathode and anode of an arc discharge is able to melt most of the metals and alloys. Hence, the arc is used as an intense heat

Define and classified parallel forces, Define and classified parallel force... Define and classified parallel forces Sol.: The forces, the lines of action of which are parallel to each other, are called as parallel forces. They do not meet at one point

Objectives of the motercycle, Objectives After studying this unit, you... Objectives After studying this unit, you should be able to describe how a motorcycle works, identify the transmission system and its various part, explain abo

Determine the workdone by the fluid on the piston, Explain Zeroth law and 1... Explain Zeroth law and 1 st law of thermodynamics. Describe Internal energy and Enthalpy. What is a PMMFK. Give the expression for reversible workdone in a thermodynamic system

Determine mean effective pressure, An oil engine works on the Dual cycle, t... An oil engine works on the Dual cycle, the heat liberated at consent pressure being twice that liberated at consent volume. The compression ratio of the engine is 8 and the expansi