Process Control and Instrumentation Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the Iron-constantan thermocouple Optical pyrometer Mercury in glass thermometer Alcohol filled thermometer Iron-constantan thermocouple Optical pyrometer Mercury in glass thermometer Alcohol filled thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a Large area but small mass High thermal conductivity Small specific heat All of these Large area but small mass High thermal conductivity Small specific heat All of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Cascade control means One feed-back loop More than one feed-back loop Feed forward control On-off control One feed-back loop More than one feed-back loop Feed forward control On-off control ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by Accounting for the tube expansion Filling nitrogen under pressure in the stem Increasing the diameter of the tube Using steel tube in place of glass tube Accounting for the tube expansion Filling nitrogen under pressure in the stem Increasing the diameter of the tube Using steel tube in place of glass tube ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermodynamic celcius scale of temperature measurement is Both A&B Here Having an interval of 100° between ice point to steam point Defined on the basis of melting point of ice and evaporation temperature of water vapor Having an interval of 100° between ice point to steam point Both A&B Here Having an interval of 100° between ice point to steam point Defined on the basis of melting point of ice and evaporation temperature of water vapor Having an interval of 100° between ice point to steam point ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In a closed loop system, the process to be controlled is an integrating process with transfer function l/2s. The controller proposed to be used in an integral controller with transfer function 1/T₁s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit Overdamped response Underdamped response Unstable response Undamped response Overdamped response Underdamped response Unstable response Undamped response ANSWER DOWNLOAD EXAMIANS APP
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