A blower is driven by an electric motor though a belt drive. The motor runs at 750 r.p.m. For thispower transmission, a flat belt of 8 mm thickness and 250 mm width is used. The diameter of themotor pulley is 350 mm and that of the blower pulley 1350 mm. The center distance between thesepulleys is 1350 mm and an open belt configuration is adopted. The pulleys are made out of castiron. The frictional coefficient between the belt and pulley is 0.35 and the permissible stress for thebelt material can be taken as 2.5 N/mm2 with sufficient factor of safety. The mass of a belt is 2 kgper meter length. Find the maximum power transmitted without belt slipping in any one of thepulleys.

Given data:- The speed of the motor is N = 750 rpm. The thickness of the flat belt is t = 8 mm. The…

Answered: A blower is driven by an electric motor…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A blower is driven by an electric motor though a belt drive. The motor runs at 750 r.p.m. For this power transmission, a flat belt of 8 mm thickness and 250 mm width is used. The diameter of the motor pulley is 350 mm and that of the blower pulley 1350 mm. The center distance between these pulleys is 1350 mm and an open belt configuration is adopted. The pulleys are made out of cast iron. The frictional coefficient between the belt and pulley is 0.35 and the permissible stress for the belt material can be taken as 2.5 N/mm2 with sufficient factor of safety. The mass of a belt is 2 kg per meter length. Find the maximum power transmitted without belt slipping in any one of the pulleys. Note: Sketch the belt drive system for both parts and label the given data on it.
Problem: A pump is driven by an electric motor through an open type flat belt drive. Determine the belt specificationsfor the following data.Motor pulley diameter= 400 mmPump pulley diameter = 800 mmCoefficient of friction for motor pulley = 0.30Coefficient of friction for pump pulley = 0.35Center distance between the pulleys=2000 mmRotational speed of the motor=2000 rpmPower transmission = 40kWdensity of belt material = 1000 kg/m3 width of the belt=240mmthickness of the belt = 5mm
2. A blower is driven by an electric motor though a belt drive. The motor runs at 750 r.p.m. For this power transmission, a flat belt of 8 mm thickness and 250 mm width is used. The diameter of the motor pulley is 350 mm and that of the blower pulley 1350 mm. The center distance between these pulleys is 1350 mm and an open belt configuration is adopted. The pulleys are made out of cast iron. The frictional coefficient between the belt and pulley is 0.35 and the permissible stress for the belt material can be taken as 2.5 N/mm2 with sufficient factor of safety. The mass of a belt is 2 kg per meter length. Find the maximum power transmitted without belt slipping in any one of the pulleys. [Ans. 35.9 kW]
8. A blower is driven by an electric motor though a belt drive. The motor runs at 750 r.p.m. For this power transmission, a flat belt of 8 mm thickness and 250 mm width is used. The diameter of the motor pulley is 350 mm and that of the blower pulley 1350 mm. The centre distance between these pulleys is 1350 mm and an open belt configuration is adopted. The pulleys are made out of cast iron. The frictional coefficient between the belt and pulley is 0.35 and the permissible stress for the belt material can be taken as 2.5 N/mm² with sufficient factor of safety. The mass of a belt is 2 kg per metre length. Find the maximum power transmitted without belt slipping in any one of the pulleys. [Ans. 35.9 kW]
A single plate friction clutch with both sides of plate being effective is used to transmit power at an engine speed of 200rpm. It has outer and inner radii 10cm and 8cm respectively. Find maximum power transmitted and the corresponding axial thrust, if the maximum intensity of pressure is not to exceed 0.08N/mm2 . Assume coefficient of friction as 0.25.
A 2hp motor is to drive a food shredder. The motor is projected to run at 1450 rpm and the required speed at the food shredder is 60 rpm. Design a double reduction drive consisting of belt and chain for this application. Please give solution and show drawing if needed
Note: If you don't know the solution please leave it but don't give me wrong solution. A flat open belt drive is used to transmit a power of 25kW from a motor shaft rotating at 950 rpm. The radius of the pulley of the motor shaft is 125mm while the radius of the puller of the driven shaft is 450mm. The center distance between the shafts is 2,250mm. the coefficient of friction is 0.25 and the density of the belt material is 950 kg/m^3. The belt width is 126 mm. The allowable stress is 2.6MPa. Determine the thickness of the belt.
A hammer mill is driven by a High Torque (HT) AC motor. The system is used for 8 hours /day. Input speed is 870 RPM and input power is 25 HP. Nominal output speed is 310 RPM. Design a V-belt drive and specify:(a) (b) (c) (d) (e)the belt size,the sheave sizes,the number of belts, theactualoutputspeed,the center distance. Show all your calculations.
A single plate friction clutch with both sides of plate being effective is used to transmit power at an engine speed of 2000 rpm. It has outer and inner radii 10 cm and 8 cm respectively. Find maximum power transmitted and the corresponding axial thrust, if the maximum intensity of pressure is not to exceed 0.08 N/mm“. Assume coefficient of friction as 0.25.
A belt conveyor transports 18 tonnes per hr at 20°. Determine the unit weight of belt material in kg/ply-cm width-m to lift the load vertically up sufficient to give 33.5 m horizontal center-to-center pulley distance. 1750-rpm motor, V-belt drive to helical gear speed reducer. Belt speed, 61 m/min. Discharge over tail pulley. No tripper.
A1. A flat belt drive for speed reduction has pulley diameters of 200 mm and 380 mm. Themaximum belt tension is not to exceed 620 N and it is required to transmit 1·8 kW at anoutput speed of 360 rev/min. Determine:(a) The input torque. (b) The belt speed. (c) The limiting slack side tension. (d) The initial tension at which the belt should be set.
The width of the belt used if its thickness is 6 mm. Ans. 261 mm 8. A nylon-core flat belt has an elastomer envelop; is 200 mm wide, and transmits 60 KW at a belt speed of 25 m/s. The belt has a mass of 2 kg/m of the belt length. The belt is used in a crossed configuration to connect a 300 mm diameter driving pulley to a 900 mm diameter driven pulley at a shaft spacing of 6 m. A. Calculate the belt length and the angles of wrap. Ans. 13.95 m, 3.34 rad or 191.4° B. Compute the belt tensions based on a coefficient of friction of 0.33. Ans. 1.76 KN, 1.96 KN

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