In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the ______________ variable?
A. Load
B. Controlled
C. Manipulated
D. None of these
Process Control and Instrumentation
The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter D. and shape & number of corrugations. Its deflection is proportional to_______________?
The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter D. and shape & number of corrugations. Its deflection is proportional to_______________?
A. d
B. d2
C. d3
D. d4
Nichol’s chart deals with __________________?
Nichol’s chart deals with __________________?
A. A.R. vs. phase lag of first order
B. A.R. vs. phase lag of second order
C. Closed loop values vs. open loop values
D. Frequency response values of controllers
Configuration of Bourdon spring tube is never made of _____________ shape?
Configuration of Bourdon spring tube is never made of _____________ shape?
A. Circular
B. Semi-circular
C. Helical
D. Spiral
Which of the following is not a variable area flow meter ?
Which of the following is not a variable area flow meter ?
A. Piston type meter
B. Rotameter
C. Magnetic flow meter
D. Orifice and tapered plug meter
The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by ____________________?
The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by ____________________?
A. Reducing value of Kc
B. Introducing integral control
C. Introducing derivative control
D. None of the above
What is the Laplace transform of impulse input having magnitude „X‟ ?
What is the Laplace transform of impulse input having magnitude „X‟ ?
A. X
B. X2
C. 1/X
D. 1
An aneroid barometer measures the _____________ pressure?
An aneroid barometer measures the _____________ pressure?
A. Atmospheric
B. Absolute
C. Vacuum
D. Gage
The unit of ‘time constant’ of a system is the same as that of___________________?
The unit of ‘time constant’ of a system is the same as that of___________________?
A. Velocity
B. Time
C. (Time)-1
D. None of these
____________ stability method uses open loop transfer function?
____________ stability method uses open loop transfer function?
A. Nyquist
B. Mikhailov
C. Ruth
D. None of these