1.With the use of appropriate graphs, for centrifugal pumps only explain the relationship between pressure and volumetric flow, and power consumed and volumetric flow.
2.In continuos process control a 'PID controller' is installed which uses a combination of proportional, integral and derivative action. Why are these three modes of control used in conjunction?
3.An inductive proximity switch is a device used in valve feedback, describe the construction, operating principle and beneficial features of the switch?
4.A 40 KVA 3300/240V.50Hz .1 phase transformer has 660 turns on the primary . determine 1, the number of turns on the secondary , 2, the maximum value of flux in the core ?