Process Control and Instrumentation Photoelectric pyrometers are suitable in the temperature range of __________ °C. 800-1600 400-1600 400-1000 800-2500 800-1600 400-1600 400-1000 800-2500 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
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. None of these Bode stability Nyquist Routh stability None of these Bode stability Nyquist Routh stability ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Time constant is the Same as transportation lag Same as dead time Time required by the measured variable to reach 63.2% of its ultimate change Time taken by the controlled variable to reach 63.2% of its full change Same as transportation lag Same as dead time Time required by the measured variable to reach 63.2% of its ultimate change Time taken by the controlled variable to reach 63.2% of its full change ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a variable area flow meter? Orifice and tapered plug meter Magnetic flow meter Piston type meter Rotameter Orifice and tapered plug meter Magnetic flow meter Piston type meter Rotameter ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Flow rate through an orifice is __________ the pressure differential. Proportional to Inversely proportional to the square root of Inversely proportional to the square of Proportional to the square root of Proportional to Inversely proportional to the square root of Inversely proportional to the square of Proportional to the square root of ANSWER DOWNLOAD EXAMIANS APP
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