Conduction occurs when heat is transferred to an object through direct contact with particles.
The first figure matches the description
There are only two things you can do to increase the work output of a machine:
1). Increase the work INput to the machine.
2). Make the machine more efficient ... do things like lubricating it better to eliminate some internal friction.
The element number 17 is associate with Chrlorine which has 17 protons and 18 neutrons.