Process Control and Instrumentation Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C. - 39 and 350 - 51 and 439 - 79 and 395 - 10 and 425 - 39 and 350 - 51 and 439 - 79 and 395 - 10 and 425 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? Water Carbon-tetrachloride Mercury Methyl alcohal Water Carbon-tetrachloride Mercury Methyl alcohal ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the Optical pyrometer Alcohol filled thermometer Iron-constantan thermocouple Mercury in glass thermometer Optical pyrometer Alcohol filled thermometer Iron-constantan thermocouple Mercury in glass thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple? 3 0.1 29 13 3 0.1 29 13 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Range of hydrogen gas constant volume themometer is __________ °C. 0 to 100 400 - 1000 -10 to 20 100 - 500 0 to 100 400 - 1000 -10 to 20 100 - 500 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency. This is __________ criterion. Nyquist None of these Bode stability Routh stability Nyquist None of these Bode stability Routh stability ANSWER DOWNLOAD EXAMIANS APP
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