Process Control and Instrumentation Change of angle of refraction with composition comprises the working principle of a Polarograph Refractrometer Spectrometer Polarimeter Polarograph Refractrometer Spectrometer Polarimeter ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following temperature measuring instruments need not touch the object whose temperature is being measured? Mercury in glass thermometer Filled system thermometer Thermo electric pyrometer Radiation/infrared pyrometer Mercury in glass thermometer Filled system thermometer Thermo electric pyrometer Radiation/infrared pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury. 700 250 550 350 700 250 550 350 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is π/3 π/6 π/12 5π/12 π/3 π/6 π/12 5π/12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Emf generated in a thermocouple depends on the temperature Of cold junction only Difference between cold junction and atmospheric temperature Of hot junction only Difference between hot and cold junctions Of cold junction only Difference between cold junction and atmospheric temperature Of hot junction only Difference between hot and cold junctions ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase lag of the sinusoidal response of a first order system is 180° 30° 90° 120° 180° 30° 90° 120° ANSWER DOWNLOAD EXAMIANS APP
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