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Why is a machine is never 100 efficient?
Entropy. There are always losses - usually by friction.
Why is it impossible for the output work of a machine to be greater than the machine's input work?
There are always energy losses within the machine due to inertia, friction, etc.
Does an ideal machine have friction?
Machine without any friction is an ideal machine so an ideal machine cannot have friction.
Why is work output of a machine always less than the work input?
TNSTAFL There's no such thing as a free lunch. There are ALWAYS losses in any machine (friction being the most common) There is a joke exception - the electric heater ... since the losses are the desired result.
What can reduce a machine's efficiency?
A. By decreasin the work inut to the machine without increasing output B. By reducing losses due to friction C. By increasing the ork ouput of the machine wihout increasing input D. All of the above D. ALL OF THE ABOVE
Are the friction losses of the machine linear in induction motor electrical machines?
yes
How lubericating a machine affects the output force exerted by the machine?
It maximizes it, by reducing the internal losses to friction.
Why is a machine is never 100 efficient?
Entropy. There are always losses - usually by friction.
How do you increased machine efficiency?
By reducin friction between the machine parts and also by avoiding any sorts of power losses.
Why is it impossible for the output work of a machine to be greater than the machine's input work?
There are always energy losses within the machine due to inertia, friction, etc.
What can you do to increase the efficiency of a machine?
Reduce losses from friction so forth in transmission of power. Ensure fuel utilized to the fullest.
Does an ideal machine have friction?
Machine without any friction is an ideal machine so an ideal machine cannot have friction.
Does the simple machine reduce overall work needed?
No. Work out is always less than work in due to friction and other losses..
Why is work output of a machine always less than the work input?
TNSTAFL There's no such thing as a free lunch. There are ALWAYS losses in any machine (friction being the most common) There is a joke exception - the electric heater ... since the losses are the desired result.
Why is the efficiency of a machine less than 1?
An efficiency factor of 1 (or 100% efficiency) is not possible due to losses that cannot be reduced to zero. These losses take the form of friction, heat loss etc.
What can reduce a machine's efficiency?
A. By decreasin the work inut to the machine without increasing output B. By reducing losses due to friction C. By increasing the ork ouput of the machine wihout increasing input D. All of the above D. ALL OF THE ABOVE
Why does a car slow down when the acceleration is not applied?
There are MANY sources of Friction within the machine that we call a CAR. All of the moving parts experience frictional losses that result in Heat Generation, which results in Power losses. Even the tires Heat up due to rolling friction. So, when the engine's power is reduced below the level required to overcome all those friction losses, the CAR slows down.
