Process Control and Instrumentation A sinusoidal variation in the input passing through a linear first order system Gets amplified (magnitude increases) Becomes less oscillatory (frequency decreases) Gets attenuated (magnitude decreases) Becomes more oscillatory (frequency increases) Gets amplified (magnitude increases) Becomes less oscillatory (frequency decreases) Gets attenuated (magnitude decreases) Becomes more oscillatory (frequency increases) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation If response of a control system is to be free of offset and oscillation, the most suitable controller is Proportional-derivative(PD)controller Proportional-integral (PI) controller Proportional integral-derivative (PID) controller Proportional controller Proportional-derivative(PD)controller Proportional-integral (PI) controller Proportional integral-derivative (PID) controller Proportional controller ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Conversion formula for converting amplitude ratio (AR) into decibels is Decibel = 20 log10 (AR) Decibel = 20 loge (AR) Decibel = 20 log10 (AR)0.5 Decibel = 20 loge (AR)0.5 Decibel = 20 log10 (AR) Decibel = 20 loge (AR) Decibel = 20 log10 (AR)0.5 Decibel = 20 loge (AR)0.5 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples can measure the maximum temperature? Platinum-rhodium Iron-constantan Chromel-alumel Tungsten-molybdenum Platinum-rhodium Iron-constantan Chromel-alumel Tungsten-molybdenum ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The transfer function for a P-D controller is Kc(1 +1/τD s) Kc τD s Kc(1+τD s) Kc/τD s Kc(1 +1/τD s) Kc τD s Kc(1+τD s) Kc/τD s ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Meleoid gauge measures the __________ pressure. Sub-atmospheric Positive Atmospheric Very high Sub-atmospheric Positive Atmospheric Very high ANSWER DOWNLOAD EXAMIANS APP
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