A motorised metal guillotine machine is required to cut 45 mm diameter hole in a plate of 20 mm thickness at rate of 35 holes per minute. It requires a torque of 7 Nm for an area of hole in mm2. If the cutting takes 1/10 of a second and the speed of its flywheel varies from 165 rpm to 145 rpm, calculate:

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A motorised metal guillotine machine is required to cut 45 mm diameter hole in a plate of 20 mm thickness at rate of 35 holes per minute. It requires a torque of 7 Nm for an area of hole in mm2. If the cutting takes 1/10 of a second and the speed of its flywheel varies from 165 rpm to 145 rpm, calculate:

4.1.
Energy required to cut a hole.
4.2.
Energy required for cutting work per second.
4.3.
Maximum fluctuation of energy of the flywheel.
4.4.
Mass of the flywheel having radius of gyration of 1.5 m.
Transcribed Image Text:4.1. Energy required to cut a hole. 4.2. Energy required for cutting work per second. 4.3. Maximum fluctuation of energy of the flywheel. 4.4. Mass of the flywheel having radius of gyration of 1.5 m.
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