Mechanical Engineering - Engineering Mechanics - Discussion
Discussion Forum : Engineering Mechanics - Section 2 (Q.No. 13)
13.
A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is
Discussion:
32 comments Page 1 of 4.
Chander kant said:
1 decade ago
MA = W/P = 1000/80 = 12.5.
Efficiency = 12.5/20*100 = 62.5%.
So its efficiency is above 50% so it is a reversible machine.
Efficiency = 12.5/20*100 = 62.5%.
So its efficiency is above 50% so it is a reversible machine.
(1)
Rai Singh said:
1 decade ago
For an ideal machine MA = VR.
Pallavi said:
1 decade ago
What is MA and VR full form?
Tarak said:
1 decade ago
Mechanical advantage and velocity ratio.
Raj said:
10 years ago
When it will ideal and non reversible?
Akshay said:
10 years ago
Less than 50% is irreversible.
Greater than 50% is reversible.
Greater than 50% is reversible.
Dipak Bisen said:
9 years ago
Irreversible machine also known as self locking machine.
Giri said:
9 years ago
Ideal is equal to 50%.
Ashwini singh said:
9 years ago
Less than 50%is irreversible greater than 50% is reversible and equals to 100% is ideal.
Promise said:
9 years ago
Whereas ideal is equal 50%.
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