• Q3:An exhaust fan fitted with 900 mm diameter pulley is driven by a flat belt from a 30 kW, 950 r.p.m. squirrel cage motor. The pulley on the motor shaft is 250 mm in diameter and the centre distance between the fan and motor is 2.25 m. The belt is 100 mm wide with a coefficient of friction of 0.25. If the allowable stress in the belt material is not to exceed 2 MPa, determine the necessary thickness of the belt and its total length. Take centrifugal force effect into consideration for density of belt being 950 kg/m³. [Ans. 26 mm; 6.35 m]
• Q3:An exhaust fan fitted with 900 mm diameter pulley is driven by a flat belt from a 30 kW, 950 r.p.m. squirrel cage motor. The pulley on the motor shaft is 250 mm in diameter and the centre distance between the fan and motor is 2.25 m. The belt is 100 mm wide with a coefficient of friction of 0.25. If the allowable stress in the belt material is not to exceed 2 MPa, determine the necessary thickness of the belt and its total length. Take centrifugal force effect into consideration for density of belt being 950 kg/m³. [Ans. 26 mm; 6.35 m]
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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![H.W
■ Q3:An exhaust fan fitted with 900 mm diameter pulley is driven by a flat
belt from a 30 kW, 950 r.p.m. squirrel cage motor. The pulley on the motor
shaft is 250 mm in diameter and the centre distance between the fan and
motor is 2.25 m. The belt is 100 mm wide with a coefficient of friction of
0.25. If the allowable stress in the belt material is not to exceed 2 MPa,
determine the necessary thickness of the belt and its total length. Take
centrifugal force effect into consideration for density of belt being 950
kg/m³.
[Ans. 26 mm; 6.35 m]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F71dc10a0-8c6e-4949-929b-e1fcfeb7145a%2F4dea8724-b5c8-4138-9518-b21a6ac004f8%2Fu8ubvd_processed.jpg&w=3840&q=75)
Transcribed Image Text:H.W
■ Q3:An exhaust fan fitted with 900 mm diameter pulley is driven by a flat
belt from a 30 kW, 950 r.p.m. squirrel cage motor. The pulley on the motor
shaft is 250 mm in diameter and the centre distance between the fan and
motor is 2.25 m. The belt is 100 mm wide with a coefficient of friction of
0.25. If the allowable stress in the belt material is not to exceed 2 MPa,
determine the necessary thickness of the belt and its total length. Take
centrifugal force effect into consideration for density of belt being 950
kg/m³.
[Ans. 26 mm; 6.35 m]
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