On what factors the efficiency of Carnot engine depends?
efficiency of the Carnot engine depends on the temperature of the hot and cold reservoirs .
Which is more effective way to increase the efficiency of a Carnot engine?
Hence efficiency of carnot engine can be increased by a greater amount by increasing the temp.
What is the efficiency of Carnot heat engine?
The Carnot Efficiency is the theoretical maximum efficiency one can get when the heat engine is operating between two temperatures: The temperature at which the high temperature reservoir operates ( THot ). The temperature at which the low temperature reservoir operates ( TCold ).
What factors reduce the efficiency of a heat engine?
The efficiency of Carnot heat engine depends on the temperature of high temperature reservoir and cold temperature sink. One thing to be noticed in the Carnot cycle is it involves usage of reversible process. The cycle in overall is a cyclic reversible process for which the change in entropy is zero.
Why is a heat engine not 100% efficient?
It is impossible for heat engines to achieve 100% thermal efficiency () according to the Second law of thermodynamics. This is impossible because some waste heat is always produced produced in a heat engine, shown in Figure 1 by the term.
Can you design an engine of 100 efficiency?
Or, it is not possible to design a heat engine that has an efficiency of 1.00 or 100%. The efficiency of a heat engine can be 100% only if all the heat energy gets converted into work (or mechanical energy). In other words, it will never be possible to design a heat engine having 100 per cent efficiency.
Why is a perfect heat engine Impossible?
It is impossible to construct a perfect heat engine. Since it absorbs heat, its entropy is increased. If it increases its entropy enough, it will ensure that the entire system has a net increase in entropy.
Why is no machine 100 efficient or greater than 100 efficient?
Machines are not 100% efficient because some of the work done by a machine is used to overcome friction. So work output is always less than work input. Work: Done by machines is calculates as Mechanical Efficiency which is Work Output divided by Work Input.
Is there a 100 efficient machine?
The short answer is: It can’t. Almost all machines require energy to offset the effects of gravity, friction, and air/wind resistance. Thus, no machine can continually operate at 100 percent efficiency.
What is an example of a 100% efficient machine?
A simple machine, such as a lever, pulley, or gear train, is “ideal” if the power input is equal to the power output of the device, which means there are no losses. In this case, the mechanical efficiency is 100%.
Why efficiency is always less than 100?
The percentage of the work input that becomes work output is the efficiency of a machine. Because there is always some friction, the efficiency of any machine is always less than 100 percent.
Can a machine multiply input distance?
A machine can multiply input force or input distance, but NEVER input energy. 19.
Can simple machine multiply energy?
One way to characterize a “simple” machine is to say that it has no internal source of energy. It may nevertheless be very useful in that it multiply the input force to accomplish a task. The factor by which it multiplies the force is often called the “mechanical advantage”.
What is the common formula for work?
Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.
What is output force?
The output force (load) is the scientific name for the weight you want to move (In the picture, the output force is the weight of the elephant). The input force (effort) is the amount of effort used to push down on a rod, or pull on a rope in order to move the weight.
What is an example of output force?
The upward force the board exerts on the load is the output force. Examples of levers include: pliers, a wheelbarrow, and the human biceps and forearm. All levers include a stiff structure (the lever) that rotates around a fixed point called the fulcrum.
What is the difference between input and output force?
What is the difference between the input force and output force? Input- force you exert on a machine, output- force exerted by a machine. Output- the distance the output force is exerted through.