Question

a machine which convert heat into work is called​

Answer 1

Answer:

A heat engine is any machine which converts heat into useful work for example, a steam engine or a car engine. Real heat engines are complex and there are many ways of converting heat energy into useful work.

Answer 2

Answer:

Work is the transfer of energy by any process other than heat. Heat and work are related: work can be completely converted into heat, but the reverse is not true: heat cannot be completely converted to work.