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.Management Sciences
Category: Process Control and Instrumentation
The transfer function of a first order system is______________?
0
A. 1/(Ts + 1)
B. 1/Ts
C. s/(Ts + 1)
D. None of these
In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the ____________ variable?
A. Load
B. Manipulated
C. Controlled
D. None of these
The ____________ of a vapor pressure thermometer is a secondary element ?
A. Pointer
B. Bourdon tube
C. Bulb
D. None of these
Resistance of a gas in a vessel is given by (where, P = pressure, V = volume of the vessel, n = no. of moles of the gas, R = gas constant) ?
A. V/nRT
B. nRT/V
C. nRT/P
D. P/nRT
Which of the following flow-metering instruments is an areameter ?
A. Venturimeter
B. Rotameter
C. Pitot tube
D. Hot wire anemometer
Reference points i.e., ice point and steam point in Reaumer temperature scale are respectively_________________?
A. – 273° & 80°
B. 0° & 80°
C. 32° & 460°
D. 32° & 80°
A system with a double pole at the origin is unstable since the corresponding term in the time domain________________?
A. Is a constant
B. Grows exponentially with time
C. Grows linearly with time
D. Decays linearly with time
The level of a liquid under pressure can be determined using___________________?
A. Bubbler system
B. Differential pressure manometer
C. Diaphragm box system
D. Air-trap system
If response of a control system is to be free of offset and oscillation, the most suitable controller is_________________?
A. Proportional controller
B. Proportional-derivative (PD) controller
C. Proportional-integral (PI) controller
D. Proportional integral-derivative (PID) controller
Polarograph is meant for the analysis of __________________?
A. Gaseous mixture
B. Miscible liquids
C. Solids
D. Isotopes
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