Process Control and Instrumentation Which of the following is a desirable characteristic of an instrument? Poor reproducibility High drift High fidelity High measuring lag Poor reproducibility High drift High fidelity High measuring lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Emf generated in a thermocouple depends on the temperature Of cold junction only Difference between cold junction and atmospheric temperature Difference between hot and cold junctions Of hot junction only Of cold junction only Difference between cold junction and atmospheric temperature Difference between hot and cold junctions Of hot junction only ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A sinusoidal variation in the input passing through a linear first order system Gets amplified (magnitude increases) 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) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The open loop transfer function of a control system is KR/(1 + TS) . This represents Dead time system A second order system A first order system A first order time lag Dead time system A second order system A first order system A first order time lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dead zone in an instrument must be less than __________ percent of the scale. 0.2 8 4 1.5 0.2 8 4 1.5 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C? Radiation pyrometer Photoelectric pyrometer Thermocouples Optical pyrometer Radiation pyrometer Photoelectric pyrometer Thermocouples Optical pyrometer ANSWER DOWNLOAD EXAMIANS APP
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