Not if you consider the energy expended to grip or engage the lever--this does account for a minimum amount of lost efficiency
No, due to the fact machines loose energy due to heat/thermal energy. you will always loose some amount of energy.
Perpetual motion. This answer is more related to the question "What do all machines DO NOT HAVE.
47 percent out of 100 percent is 47 percent (0.47 x 100 percent = 47 percent). More clearly, 47 % / 100 % = 47 / 100 = 0.47
3 percent out of 100 percent = 0.03 x 100 percent = 3 percent
Some energy is lost to friction.
Not if you consider the energy expended to grip or engage the lever--this does account for a minimum amount of lost efficiency
The Percentage Efficency for an amp is calculated via the following formula,Percentage efficency = (0.5÷amperage)×100= (0.5÷1)×100= ± 10%
One major factor that limits the efficiency of machines is friction. Friction creates resistance as moving parts come into contact with each other, leading to energy losses in the form of heat. Additionally, other factors such as air resistance, electrical resistance, and imperfections in materials can also contribute to reducing the overall efficiency of machines.
No, due to the fact machines loose energy due to heat/thermal energy. you will always loose some amount of energy.
because they are not proper
One reason for this is friction, which results in energy loss due to heat production. Additionally, there are inefficiencies in the conversion of energy from one form to another, such as from mechanical to electrical energy. Finally, external factors like air resistance can also contribute to reducing the overall efficiency of machines.
Perpetual motion. This answer is more related to the question "What do all machines DO NOT HAVE.
No, an ideal machine cannot have an efficiency of 100 percent. This is because some energy is always lost as heat due to factors like friction and resistance. The best an ideal machine can achieve is an efficiency of 100% by having no energy losses.
becaus ethey have friction
That means that some energy is wasted. For example, it is quite common for part of the input energy to be converted into useless heat.A drastic example is a traditional incandescent light bulb. Something like 5% of the energy gets converted into visible light. The remainder is radiated mainly as infrared - that is, heat radiation.
The efficiency of an actual machine is always less than 100 percent, as no machine can convert all input energy into useful output energy due to factors like friction, heat loss, and inefficiencies in the system.