Chemical Engineering :: Process Control and Instrumentation
-
Time constant is the
-
Mercury manometer (U-tube type) exemplifies a __________ order system.
-
Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is
-
Bode stability method uses __________ loop transfer function.
-
Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion?
-
Which of the following is not a second order instrument ?
-
Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is
-
Specific conductance is defined as the reciprocal of resistance in ohms of 1c.c. of liquid at a specified temperature. Its value for distilled water is about __________ micro mho/cm3.
-
A simple pitot tube measures the
-
For a feed back control system to be stable, the
Whatsapp
Facebook
|
A.
roots of the characteristic equation should be real.
|
|
B.
poles of the closed loop transfer function should lie in the left half of the complex plane.
|
|
C.
Bode plots of the corresponding open loop transfer function should monotoni-cally decrease.
|
|
D.
poles of the closed loop transfer function should lie in the right half of the complex plane.
|