Process Control and Instrumentation A sinusoidal variation in the input passing through a linear first order system Becomes more oscillatory (frequency increases) Becomes less oscillatory (frequency decreases) Gets attenuated (magnitude decreases) Gets amplified (magnitude increases) Becomes more oscillatory (frequency increases) Becomes less oscillatory (frequency decreases) Gets attenuated (magnitude decreases) Gets amplified (magnitude increases) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is 45° -180° -90° -45° 45° -180° -90° -45° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C. 0.0001 0.1 0.01 0.001 0.0001 0.1 0.01 0.001 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature of __________ can not be measured by an optical or radiation pyrometer. Combustion space in boilers Rotary limestone calcination kiln Hot blast (air) from stoves Molten slag flowing out of blast furnace Combustion space in boilers Rotary limestone calcination kiln Hot blast (air) from stoves Molten slag flowing out of blast furnace 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 None of these < 1 >1 1 None of these < 1 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is an undesirable dynamic characteristic of an instrument? Time lag Reproducibility Dead zone Static error Time lag Reproducibility Dead zone Static error ANSWER DOWNLOAD EXAMIANS APP
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