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A quarry sand conveyor is driven by a 20 kW motor, 3 phase soft start, via a V- belt drive system. The conveyor operates 24 hours per day. It is stopped intermittently by a band brake system. If the head drum speed is 430 rpm and the motor speed is 960 rpm, recommend the size and the number of belts required. The distance between the centers is 612mm. Use a V- belt selection chart and briefly explain the procedure you have used or the steps you have gone through in selecting the belt/belts. () For the given arrangement, what is the lap angle that the belt subtend, on the smaller pully? (ii) What is the maximum belt tension when transmitting 20kW at the running speed given? (ii) What is the initial belt tension required? Note: You may have to do research to find a value for the friction coefficient between the belt material and the pully.

A quarry sand conveyor is driven by a 20 kW motor, 3 phase soft start, via a V- belt drive system. The conveyor operates 24 hours per day. It is stopped intermittently by a band brake system. If the head drum speed is 430 rpm and the motor speed is 960 rpm, recommend the size and the number of belts required. The distance between the centers is 612mm. Use a V- belt selection chart and briefly explain the procedure you have used or the steps you have gone through in selecting the belt/belts. () For the given arrangement, what is the lap angle that the belt subtend, on the smaller pully? (ii) What is the maximum belt tension when transmitting 20kW at the running speed given? (ii) What is the initial belt tension required? Note: You may have to do research to find a value for the friction coefficient between the belt material and the pully.

Elements Of Electromagnetics
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 quarry sand conveyor is driven by a 20 kW motor, 3 phase soft start, via a V- belt drive system. The conveyor operates 24 hours per day. It is stopped intermittently by a band brake system. If the head drum speed is 430 rpm and the motor speed is 960 rpm, recommend the size and the number of belts required. The distance between the centers is 612mm. Use a V- belt selection chart and briefly explain the procedure you have used or the steps you have gone through in selecting the belt/belts. () For the given arrangement, what is the lap angle that the belt subtend, on the smaller pully! (ii) What is the maximum belt tension when transmitting 20kW at the running speed given? (ii) What is the initial belt tension required? Note: You have to do research to find a value for the friction coefficient between the belt may material and the pully.
Transcribed Image Text:A quarry sand conveyor is driven by a 20 kW motor, 3 phase soft start, via a V- belt drive system. The conveyor operates 24 hours per day. It is stopped intermittently by a band brake system. If the head drum speed is 430 rpm and the motor speed is 960 rpm, recommend the size and the number of belts required. The distance between the centers is 612mm. Use a V- belt selection chart and briefly explain the procedure you have used or the steps you have gone through in selecting the belt/belts. () For the given arrangement, what is the lap angle that the belt subtend, on the smaller pully! (ii) What is the maximum belt tension when transmitting 20kW at the running speed given? (ii) What is the initial belt tension required? Note: You have to do research to find a value for the friction coefficient between the belt may material and the pully.
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