Q

A machine has MA = 2 and VR = 5. Its efficiency is:

✓ Answer: B 40%
Efficiency = (MA/VR) × 100 = (2/5) × 100 = 40%.
← Previous Question Next Question →

📚 Related Questions — Mechanics

1 Which feature of a velocity-time graph for uniform acceleration determines the value… 2 Which statement about a simple machine is correct? 3 In a second-class lever: 4 A person raises 20 kg of goods 2 m above the ground… 5 An object of mass 50 kg moves along a horizontal line. What… 6 Mass × acceleration = ?