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. Bode stability Routh stability None of these Nyquist Bode stability Routh stability None of these Nyquist 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? Thermocouples Optical pyrometer Radiation pyrometer Photoelectric pyrometer Thermocouples Optical pyrometer Radiation pyrometer Photoelectric pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Pick out the one which is a first order instrument. Bare vapor pressure thermometer All of these Bare metallic thermometer Mercury in glass thermometer (without any covering or air gap) Bare vapor pressure thermometer All of these Bare metallic thermometer Mercury in glass thermometer (without any covering or air gap) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple? 0.1 13 3 29 0.1 13 3 29 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following fluid flow measuring devices can measure the largest flow rate? Weir V-notch Orificemeter Rotameter Weir V-notch Orificemeter Rotameter ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is an undesirable dynamic characteristic of an instrument? Time lag Dead zone Static error Reproducibility Time lag Dead zone Static error Reproducibility ANSWER DOWNLOAD EXAMIANS APP
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