A 58 kg skip attached to a steel rope on a crane is used to hoist bricks from the ground to the top of a construction site. The steel rope is wound onto a lifting drum with a diameter of 700 mm and rotational frequency of 69 revolutions per minute. The lifting drum is situated on the top floor. Calculate the efficiency of the lifting generator, if the electric motor power of 9000 W is needed to drive the loaded skip.
A 58 kg skip attached to a steel rope on a crane is used to hoist bricks from the ground to the top of a construction site. The steel rope is wound onto a lifting drum with a diameter of 700 mm and rotational frequency of 69 revolutions per minute. The lifting drum is situated on the top floor. Calculate the efficiency of the lifting generator, if the electric motor power of 9000 W is needed to drive the loaded skip.
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
Related questions
Question
![A 58 kg skip attached to a steel rope on
a crane is used to hoist bricks from the
ground to the top of a construction site.
The steel rope is wound onto a lifting
drum with a diameter of 700 mm and
rotational frequency of 69 revolutions
per minute. The lifting drum is situated
on the top floor. Calculate the efficiency
of the lifting generator, if the electric
motor power of 9000 W is needed to
drive the loaded skip.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fac3257bd-859e-4091-b07b-b9e2c80d8a4f%2Fe4b496d0-8563-4bbb-874d-2cbfe256218d%2Fx7wfuo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A 58 kg skip attached to a steel rope on
a crane is used to hoist bricks from the
ground to the top of a construction site.
The steel rope is wound onto a lifting
drum with a diameter of 700 mm and
rotational frequency of 69 revolutions
per minute. The lifting drum is situated
on the top floor. Calculate the efficiency
of the lifting generator, if the electric
motor power of 9000 W is needed to
drive the loaded skip.
![A 30 kg skip attached to a steel rope on
a crane is used to hoist bricks from the
ground to the top of a construction site.
The steel rope is wound onto a lifting
drum with a diameter of 700 mm and
rotational frequency of 44 revolutions
per minute. The lifting drum is situated
on the top floor. Calculate the power (in
Watts) required on the load to lift the 20
bricks.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fac3257bd-859e-4091-b07b-b9e2c80d8a4f%2Fe4b496d0-8563-4bbb-874d-2cbfe256218d%2Fvtirqs_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A 30 kg skip attached to a steel rope on
a crane is used to hoist bricks from the
ground to the top of a construction site.
The steel rope is wound onto a lifting
drum with a diameter of 700 mm and
rotational frequency of 44 revolutions
per minute. The lifting drum is situated
on the top floor. Calculate the power (in
Watts) required on the load to lift the 20
bricks.
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