Question 2 A load of 1.8 kN is hoisted by means of a rope on a lifting machine with a rotational frequency of 40 revolutions per min, and a drum whose diameter is 600 mm. Calculate the following: a) The torque. b) The linear speed of the rope (load) in m/s. c) Work done per minute. d) The power required for the load. e) Efficiency of the lifting machine, if an electric motor of 8kW is required to drive the lifting machine.
Question 2 A load of 1.8 kN is hoisted by means of a rope on a lifting machine with a rotational frequency of 40 revolutions per min, and a drum whose diameter is 600 mm. Calculate the following: a) The torque. b) The linear speed of the rope (load) in m/s. c) Work done per minute. d) The power required for the load. e) Efficiency of the lifting machine, if an electric motor of 8kW is required to drive the lifting machine.
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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Question 2 A load of 1.8 kN is hoisted by means of a rope on a lifting machine with a rotational frequency of 40 revolutions per min, and a drum whose diameter is 600 mm.
Calculate the following:
a) The torque.
b) The linear speed of the rope (load) in m/s.
c) Work done per minute.
d) The power required for the load.
e) Efficiency of the lifting machine, if an electric motor of 8kW is required to drive the lifting machine.
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