Process Control and Instrumentation The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is 5π/12 π/6 π/3 π/12 5π/12 π/6 π/3 π/12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0° C) temperature. Helium None of these Hydrogen Nitrogen Helium None of these Hydrogen Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature. Pressure Volume Viscosity All of these Pressure Volume Viscosity All of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Continuous measurement of specific gravity of a liquid is done by Hydrometer Both A and C Contact-type electric indicators Displacement meter Hydrometer Both A and C Contact-type electric indicators Displacement meter ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability? Nitrogen in steel thermometer Mercury in glass thermometer Fused metal (Na or K) in steel thermometer Alcohol in glass thermometer Nitrogen in steel thermometer Mercury in glass thermometer Fused metal (Na or K) in steel thermometer Alcohol in glass thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is Water Paraffin Carbon tetrachloride Ethylene glycol Water Paraffin Carbon tetrachloride Ethylene glycol ANSWER DOWNLOAD EXAMIANS APP
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