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.Management Sciences
Category: Process Control and Instrumentation
Working principle of radiation pyrometer is based on the __________________?
A. Wien’s law
B. Kirchoff’s law
C. Stefan Boltzmann law
D. Seebeck effect
Liquid levels in autoclaves are measured by ________________?
A. Simple float
B. Differential float type manometer
C. Glass gauge
D. None of these
In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the _____________ variable?
A. Load
B. Manipulated
C. Controlled
D. None of these
Turbine flow meters are suitable for_________________?
A. Very limited flow ranges
B. Cryogenic flow measurements
C. Aerospace and in air borne applications
D. Both B. and C.
A sinusoidal variation in the input passing through a linear first order system _________________?
A. Becomes more oscillatory (frequency increases)
B. Becomes less oscillatory (frequency decreases)
C. Gets amplified (magnitude increases)
D. Gets attenuated (magnitude decreases)
High temperature of around 2000°C of incandescent gas mantles is measured by a/an __________________?
A. Specially designed thermocouple
B. Optical pyrometer
C. Radiation pyrometer
D. None of these
To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with ________________?
A. Air
B. A metal powder or graphite
C. Oil
D. Mercury
Positioning controllers are used for _______________?
A. Low loads
B. Temperature changes
C. High loads
D. Flow rate changes
Radiation thermometer cannot measure the temperature ___________________?
A. Inside a pressure vessel
B. Of an object without coming in contact with it
C. Of liquid oxygen
D. Of moving objects at high temperature
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