Table of Contents
What is PMM1 thermodynamics?
Perpetual motion machine of the first kind (PMM1): The first law of thermodynamics states that energy can neither be created nor be destroyed. It can only get transformed from one form to another form.
What is PMM1 and why it is impossible?
perpetual motion machine-1 is a machine which does not obey first law of thermodynamics. we all know that ,as one cannot do the work continuously without consuming some amount of energy. perpetual motion machine works by supplying work continuously without consuming or taking in some energy. so it is impossible.
What is PMM1 and PMM2?
Perpetual Motion Machine (PMM) of the First Kind (PMM1) would be one to violate the 1st Law of Thermodynamics, to permanently produce useful energy (work) without any energy source, or to produce more ‘energy’ than consumed (thus generate energy from nowhere); and Perpetual Motion Machine of the Second Kind (PMM2) …
What do you understand by PMM2?
The PMM2 gene provides instructions for making an enzyme called phosphomannomutase 2 (PMM2). This enzyme is involved in a process called glycosylation, which attaches groups of sugar molecules (oligosaccharides) to proteins. Glycosylation modifies proteins so they can perform a wider variety of functions.
What is true for PMM1?
Explanation: PMM1 is the machine which violates the first law of thermodynamics that the energy can neither be created nor be destroyed. Therefore total energy of the universe is constant.
What is the efficiency of PMM1?
Such machines will have efficiency 100\%, or we can say that perpetual motion machines of second kind will have higher efficiency than ideal Carnot cycle and in my opinion, it is not possible.
Why PMM1 Cannot be constructed in practice?
Perpetual motion machine of first kind (PMM1) Perpetual motion machine of first kind does not exist because such machines violate the first law of thermodynamics.
Why is PMM2 impossible?
PMM means perpetual motion machine. It’s a machine which can produce mechanical energy without any source i.e. it consumes no energy but produces output. Practically no system in the whole universe can have entropy equal to zero. PMM 1 violates first law and PMM 2 violates the second law of thermodynamics.
The COP of a heat pump or refrigerator operating at the Carnot efficiency has in its denominator the expression TH – TC. As the surroundings cool (TC reducing) the denominator increases and COP reduces. Therefore, the colder the surroundings, the lower the COP of any heat pump or refrigerator.
What is the efficiency of pmm1?
Why are cops more than 1?
The COP usually exceeds 1, especially in heat pumps, because, instead of just converting work to heat (which, if 100\% efficient, would be a COP of 1), it pumps additional heat from a heat source to where the heat is required. Most air conditioners have COP of 2.3 to 3.5.