Process Control and Instrumentation Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the Iron-constantan thermocouple Mercury in glass thermometer Alcohol filled thermometer Optical pyrometer Iron-constantan thermocouple Mercury in glass thermometer Alcohol filled thermometer Optical pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Presence of a small amount of water in the organic systems can be determined by the __________ method. Dielectric constant end loss factor Electrical conductivity Polarimetry Emission spectroscopy Dielectric constant end loss factor Electrical conductivity Polarimetry Emission spectroscopy ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Routh stability method uses __________ loop transfer function. Neither A nor B Open Closed Either A or B Neither A nor B Open Closed Either A or B ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A sinusoidal variation in the input passing through a linear first order system Gets amplified (magnitude increases) Gets attenuated (magnitude decreases) Becomes more oscillatory (frequency increases) Becomes less oscillatory (frequency decreases) Gets amplified (magnitude increases) Gets attenuated (magnitude decreases) Becomes more oscillatory (frequency increases) Becomes less oscillatory (frequency decreases) 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. 350 550 700 250 350 550 700 250 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A typical example of a physical system with under damped characteristic is a U-tube manometer CSTR with first order reaction Spring loaded diaphragm valve Thermocouple kept immersed in a liquid filled thermowell U-tube manometer CSTR with first order reaction Spring loaded diaphragm valve Thermocouple kept immersed in a liquid filled thermowell ANSWER DOWNLOAD EXAMIANS APP
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