If a heat engine produce work only by interacting with one source. What kind of machine is this?

Perpetual motion machine of third kind (PMM3)

Perpetual motion machine of first kind (PMM1)

Perpetual motion machine of second kind (PMM2)

If a heat engine produce work only by interacting with one source. Wha

1.	If a heat engine produce work only by interacting with one source. What kind of machine is this?
A.	Perpetual motion machine of first kind (PMM1)
B.	Perpetual motion machine of second kind (PMM2)
C.	Perpetual motion machine of third kind (PMM3)
D.	None of these
Answer» C. Perpetual motion machine of third kind (PMM3)

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If a heat engine produce work only by interacting with one source. What kind of machine is this?

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