A lifting machine having V.R.= 45. The efficiency of the machine when an effort of 250 N is required to lift a load of 750 N is
Answers
Given : A lifting machine having V.R.= 45.
an effort of 250 N is required to lift a load of 750 N is
To Find : efficiency of the machine
Solution:
effort of 250 N
V.R.= 45. ( velocity ratio)
Hence Equivalent effort = 250 x 45
Let say efficiency = η %
Then 250 x 45 * (η/100) = 750
=> 45 * (η/100) = 3
=> η = 300/45
=> η = 20/3
=> η = 6.67 %
efficiency of the machine = 6.67 %
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Answer:
Efficiency of the machine = 6.67% Ans.
Step-by-step explanation:
Given : -
A lifting machine having V.R.= 45. an effort of 250 N is required to lift a load of 750 N is
To Find : -
efficiency of the machine
Solution:
effort of 250 N
V.R.= 45. (velocity ratio)
Hence Equivalent effort = 250 x 45
Let say efficiency = n %
Then 250 x 45 × (n/100) = 750
➨ 45 × (n/100) = 3
➨ n = 300/45
➨ n = 20/3
➨ n = 6.67%
Efficiency of the machine = 6.67% Ans.✔
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