A machine which can supply mechanical work continuously without consumption of any energy is called as

A machine which can supply mechanical work continuously without consumption of any energy is called as

a. Perpetual Motion Machine of the First kind (PMM1)
b. Perpetual Motion Machine of the Second kind (PMM2)
c. Perpetual Motion Machine of the Third kind (PMM3)
d. none of the above

Correct Answer : a. Perpetual Motion Machine of the First kind (PMM1)

Explanation :

The first law of thermodynamics states that the energy can neither be created nor be destroyed. It can only gets transformed from one form to another form. Perpetual Motion Machine is the machine which violates the law of thermodynamics. A machine, which can supply mechanical work continuously without consumption of any energy, violates the first law of thermodynamics. Thus this machine is the Perpetual Motion Machine of the First kind (PMM1). When a machine violates the second law or third law of thermodynamics then this machine is called as PMM2 or PMM3 respectively. Perpetual Motion Machine is an hypothetical concept.