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.Management Sciences
Category: Process Control and Instrumentation
Which of the following does not figure in the list of seven substances selected for international temperature scale ?
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A. Ice (F.P) and steam (B.P)
B. Oxygen and sulphur (B.P)
C. Antimony and silver (F.P)
D. Zinc (B.P) and mercury (F.P)
The amplitude ratio for the sinusoidal response of a _____________ is 1?
A. First order system
B. Second order system
C. Transportation lag
D. None of these
Liquid flow rate in an open channel cannot be measured by a/an __________________?
A. Orifice meter
B. Cipolletti weir
C. Rectangular weir
D. V-notch
Volumetric expansion is the working principle of the ______________ thermometers?
A. Mercury in glass
B. Constant volume gas
C. Vapor pressure
D. Bimetallic
The inverse Laplace transform of the function f(S) = 1/S (1 + S) is_________________?
A. 1 + et
B. 1 – et
C. 1 + e-t
D. 1 – e-t
Working principle of disappearing filament type optical pyrometer is based on the ________________?
A. Wien’s law
B. Seebeck effect
C. Kirchoff’s law
D. Peltier effect
Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere ?
A. Platinum-platinum + rhodium
B. Iron-constantan
C. Copper-constantan
D. Chromel-alumel
Specific gravity of a liquid cannot be measured by a/an __________________?
A. Anemometer
B. Specific gravity bottle
C. Pycnometer
D. Hydrometer
Emission spectroscopy is used for__________________?
A. Solids and metal analysis
B. Determining water purity
C. Determination of CO2 in gases
D. NOx determination
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