Which of the following statements defines correctly the efficiency of a machine?
A
the load carried by the machine divided by effort required in carrying the load
B
the distance moved by the load divided by the distance moved by the effort
C
the useful work done by the machine divided by the total work put into the machine
D
the movement of the load divided by the movement of the effort about the same point
E
the temperature at the end of the application of the machine divided by the initial temperature
Verified Correct Answer: C.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #29159)