Hello, I need some help with the folling question...
I would say B OR C though I am not sure.
Thank You.
In a Practical Machine , the power output is _____ the power input .
A. Smaller than
B.Larger than
C.Equal Too
D.Multiplied By
The power output is ALWAYS smaller than the power input. The old saying goes that we can't get something for nothing. No machine is 100% efficient; there is always some energy lost to friction, heat, etc. There are some processes that come close to being 100%.
To determine the correct answer to the question, you will need to understand the relationship between power output and power input in a practical machine. The power output refers to the amount of power that the machine delivers or produces, while the power input signifies the amount of power that is supplied to the machine.
To answer the question, you need to consider the basic principle of energy conservation, which states that energy cannot be created or destroyed but only transferred or transformed from one form to another. In the case of a practical machine, this principle also applies.
If the power output of a machine is smaller than the power input, it would violate the law of conservation of energy, as it would imply that energy is being created or destroyed within the machine. Therefore, we can eliminate option A.
If the power output of a machine is larger than the power input, it would also be contrary to the law of conservation of energy, as it would suggest that energy is being added to the system from an external source. Again, this violates the principle, eliminating option B.
If the power output is equal to the power input, it aligns with the principle of energy conservation. In this case, the machine is not creating or destroying energy but rather transferring or transforming it. Therefore, the correct answer is option C: "Equal To."
In conclusion, the power output of a practical machine is equal to the power input, as per the conservation of energy principle.