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.Management Sciences
Category: Process Control and Instrumentation
Transfer function of transportation lag is___________________?
0
A. eTS
B. e-TS
C. 1/(Ts + 1)
D. None of these
Range of hydrogen gas constant volume thermometer is _____________ °C?
A. -10 to 20
B. 0 to 100
C. 100 – 500
D. 400 – 1000
The unit step response of the transfer function (2s – 1)/[(3s + 1) (4s + 1)] reaches its final steady state asymptotically after _____________?
A. A monotonic increase
B. A monotonic decrease
C. Initially increasing and then decreasing
D. Increasing decreasing and then increasing
Thermocouple in a thermal well behaves as a true ________________?
A. First order system
B. Second order system (overdamped)
C. Multiple first order system
D. Second order system (underdamped)
Very low pressure is expressed in microns (μ), which is equal to ____________ mm of Hg column (absolute) at 0°C?
A. 0.0001
B. 0.001
C. 0.01
D. 0.1
The frequency at which maximum amplitude ratio is attained is called the ______________ frequency?
A. Corner
B. Resonant
C. Cross-over
D. Natural
The ____________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature ?
A. Pressure
B. Volume
C. Viscosity
D. All A., B. and C.
Which of the following controllers has the least maximum deviation ?
A. P-controller
B. P-I controller
C. P-I-D controller
D. P-D controller
Starting temperature of optical radiation pyrometer is ______________ °C?
A. 800
B. 400
C. 1200
D. 1500
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