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.Management Sciences
Category: Process Control and Instrumentation
Mcleod gauge is used to measure the __________________?
0
A. Point velocity
B. Flow rate
C. Vacuum
D. Pressure
Routh stability method uses ______________ loop transfer function?
A. Open
B. Closed
C. Either A. or B.
D. Neither A. nor B.
Liquid flow rate in a small channel is best measured by a/an____________________?
A. Weir
B. Pitot tube
C. Vane meter
D. Venturimeter
The operation of a Rotameter is based on ________________?
A. Variable flow area
B. Rotation of a turbine
C. Pressure drop across a nozzle
D. Pressure at a stagnation point
Temperature of molten pig iron (1450°C) and molten slag (1500°C) flowing out of a blast furnace is measured by a/an_______________?
A. Chromel-alumel thermocouple
B. Optical pyrometer
C. Radiation pyrometer
D. Either B. or C.
In an exothermic chemical reactor, the manipulated variable is the flow rate of_______________?
A. Coolant
B. Reactants
C. Product
D. None of these
Thermal wells used in temperature measurements should have __________________?
A. Very thick walls
B. Low emissivity
C. Polished surface
D. High transmissivity of radiation
Helium gas constant volume thermometer is suitable for the measurement of a temperature of ______________ °C?
A. < 100
B. < 0
C. > 0
D. > 800
Humidity of air can be determined by a__________________?
A. Chromatograph
B. Sling psychrometer
C. Mass spectrometer
D. Polarimeter
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