Process Control and Instrumentation Dilatometer is used to measure Contraction/expansion due to changes in temperature Deflection Strain Stress Contraction/expansion due to changes in temperature Deflection Strain Stress ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Positioning controllers are used for High loads Flow rate changes Low loads Temperature changes High loads Flow rate changes Low loads Temperature changes ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is 45° 90° 0° 180° 45° 90° 0° 180° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation __________ is undesirable in thermocouples used in industries, Corrosion resistance Linear relation of emf to temperature Non-linear relation of emf to temperature Oxidation resistance Corrosion resistance Linear relation of emf to temperature Non-linear relation of emf to temperature Oxidation resistance ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change? Methyl alcohal Carbon-tetrachloride Mercury Water Methyl alcohal Carbon-tetrachloride Mercury Water ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Radiation pyrometers as compared to thermocouples Can't measure the temperature of moving objects Can measure higher temperature Has a slower speed of response Is more affected by corrosive atmosphere Can't measure the temperature of moving objects Can measure higher temperature Has a slower speed of response Is more affected by corrosive atmosphere ANSWER DOWNLOAD EXAMIANS APP
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