Comparator Reference
Heater
Room
value To
Error
signal
Room
temperatur
(T.-)
Ta
E
Temperature measuring
device
h
Figure 1: A closed loop control system

The four giant gas points that are made primarily of lightweight elements are

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?