Process Control and Instrumentation Phase lag of the frequency response of a second order system to a sinusoidal forcing function Is 30° Is 90° at the most Approaches 180° asymptotically Is 120° Is 30° Is 90° at the most Approaches 180° asymptotically Is 120° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dome temperature of blast furnace stove is most accurately measured by a Iron-constantan thermocouple Platinum-platinum/rhodium ther-mocuple Radiation pyrometer Platinum resistance thermometer Iron-constantan thermocouple Platinum-platinum/rhodium ther-mocuple Radiation pyrometer Platinum resistance thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system? >1 < 1 1 None of these >1 < 1 1 None of these ANSWER DOWNLOAD EXAMIANS APP
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/12 π/6 π/3 5π/12 π/12 π/6 π/3 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Measurement of pressure in ammonia reactor is done by Bourdon gauge Pirani guage Inclined tube manometer U-tube manometer Bourdon gauge Pirani guage Inclined tube manometer U-tube manometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since The function is exponential The Laplace transform of integral of exp(at) has finite values only for s > a The Laplace transform integral of exp(at) has initial values only for s > a The function exp(at) is piece-wise continuous only for s > a The function is exponential The Laplace transform of integral of exp(at) has finite values only for s > a The Laplace transform integral of exp(at) has initial values only for s > a The function exp(at) is piece-wise continuous only for s > a ANSWER DOWNLOAD EXAMIANS APP
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