For a differential function f(x) to have maximum, df/dx & d2f/dx2 should be
The primary task of a microprocessor based controller is
A proportional controller with a gain of KC is used to control a first order process. The offset will increase if
The basic principle involved in the measurement of temperature by thermocouple is
The time constant of a first order process with resistance R & capacitance C is
A sinusoidal variation in the input passing through a linear first order system