Which statement is true for a real machine?

Question

Which statement is true for a real machine? — Exam MCQ

rrbjepyq.in · Accepted Answer

C. Some input energy is lost due to friction — Real machines experience friction and other losses, so some input energy is converted into heat, sound, etc.

rrbjepyq.in · Answer

A. Efficiency can be exactly 100% in normal operation

rrbjepyq.in · Answer

B. Output work is greater than input work

rrbjepyq.in · Answer

D. Energy is created

Which statement is true for a real machine?

📚 Related Questions — Mechanics