Answer Happy

A Proportional-Integral (PI) controller is notable for [1 mark] O being unconditionally stable when controlling third-order systems O offering the cheapest control solution for all industrial applications showing a tendency to overheat when controlling furnaces O its ability to eliminate zero-point errors
Important difference(s) between a digital and an analogue oscilloscope are [1 m. An analogue scope is essentially a modern equivalent of a digital scope O A digital scope can conveniently be controlled by software on a laptop An analogue scope is lighter, uses less power and has a smaller footprint Digital scopes are immune from signal overload and bandwidth limits
Which statement concerning a photomultiplier tube (PMT) is correct? [1 mark] Compared with a photodiode, PMTs use conveniently low voltages PMTs use a string of diodes to multiply the initial charge collection PMTs can easily be integrated into high-quality digital cameras O PMTs combine high sensitivity to light with fast response time