Process Control and Instrumentation An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall. This is the working principle of a Chromatograph PH meter Polarimeter Polarograph Chromatograph PH meter Polarimeter Polarograph ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The frequency at which maximum amplitude ratio is attained is called the __________ frequency. Cross-over Natural Corner Resonant Cross-over Natural Corner Resonant ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature? Iron-constantan Chromel-constantan All of these Platinum-platinum + rhodium Iron-constantan Chromel-constantan All of these Platinum-platinum + rhodium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation 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) V/nRT nRT/P p/nRT nRT/V V/nRT nRT/P p/nRT nRT/V ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Turbine flow meters are suitable for Very limited flow ranges Aerospace and in air borne applications Both B and C Cryogenic flow measurements Very limited flow ranges Aerospace and in air borne applications Both B and C Cryogenic flow measurements ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the systems having following transfer functions is stable? 1/(s² + 2s + 2) 1/(s²+ 2) Exp(-20s)/(s² + 2s-l) 1/(s²-2s + 3) 1/(s² + 2s + 2) 1/(s²+ 2) Exp(-20s)/(s² + 2s-l) 1/(s²-2s + 3) ANSWER DOWNLOAD EXAMIANS APP
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