An electric motor running at 970rpm is used to drive a rock crushing machine with a design power of 32 kW. A 33oz ducking weight flat belt drive is proposed with a tension ratio of R = 4 and belt width b = 120 mm. The pitch diameter of the driving pulley (on the motor-end) is 320mm. a) What is the mass per mm width per m length per ply in kg/mm/m/ply? Number (exact value) b) What is the maximum working tension per mm width per ply in N/mm/ply? Number (exact value) c) Calculate the belt velocity in m/s Number (+/-1%)
An electric motor running at 970rpm is used to drive a rock crushing machine with a design power of 32 kW. A 33oz ducking weight flat belt drive is proposed with a tension ratio of R = 4 and belt width b = 120 mm. The pitch diameter of the driving pulley (on the motor-end) is 320mm. a) What is the mass per mm width per m length per ply in kg/mm/m/ply? Number (exact value) b) What is the maximum working tension per mm width per ply in N/mm/ply? Number (exact value) c) Calculate the belt velocity in m/s Number (+/-1%)
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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Transcribed Image Text:An electric motor running at 970rpm is used to drive a rock crushing machine with a design power of 32 kW. A 33oz ducking weight flat belt drive is proposed
with a tension ratio of R = 4 and belt width b = 120 mm. The pitch diameter of the driving pulley (on the motor-end) is 320mm.
a) What is the mass per mm width per m length per ply in kg/mm/m/ply?
Number
(exact value)
b) What is the maximum working tension per mm width per ply in N/mm/ply?
Number
(exact value)
c) Calculate the belt velocity in m/s
Number
(+/-1%)
d) Determine the number of belt plies required. Your answer should be an integer number (no decimals).
Number
(exact value)
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