Choose the best answer for what a DC blocking or coupling capacitor does, assume the capacitor value is chosen to be too small.
O Blocks the DC and is relatively high impedance to the AC voltage.
O Blocks only the AC voltage going into the next stage.
O Blocks the DC voltage going into the next stage, but lets the AC signal go through.
O Has a variable voltage gain and blocks the DC level.
O Works well with a BJT transistor only.

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj