Process Control and Instrumentation Phase margin is equal to 180° - phase lag Phase lag - 180° Phase lag + 180° Phase lag + 90° 180° - phase lag Phase lag - 180° Phase lag + 180° Phase lag + 90° 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? Mercury Methyl alcohal Carbon-tetrachloride Water Mercury Methyl alcohal Carbon-tetrachloride Water ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The frequency response of a first order system, has a phase shift with lower and upper bounds given by -π/2, π/2 - ∞, π/2 -π/2, 0 0, π/2 -π/2, π/2 - ∞, π/2 -π/2, 0 0, π/2 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is Either A, B or C Iron-constantan Chromel-alumel Platinum-platinum+rhodium Either A, B or C Iron-constantan Chromel-alumel Platinum-platinum+rhodium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of radiation pyrometer is based on the Stafan-Boltzman law Kirchoffs law Wien's law Seebeck effect Stafan-Boltzman law Kirchoffs law Wien's law Seebeck effect ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dome temperature of blast furnace stove is most accurately measured by a Platinum resistance thermometer Platinum-platinum/rhodium ther-mocuple Iron-constantan thermocouple Radiation pyrometer Platinum resistance thermometer Platinum-platinum/rhodium ther-mocuple Iron-constantan thermocouple Radiation pyrometer ANSWER DOWNLOAD EXAMIANS APP
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