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. Routh stability None of these Nyquist Bode stability Routh stability None of these Nyquist Bode stability ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermometers is not suitable for distant reading upto 60 metres? Constant volume gas thermometer Mercury in glass thermometer Vapor pressure thermometer Resistance thermometer Constant volume gas thermometer Mercury in glass thermometer Vapor pressure thermometer Resistance thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Liquid argon level in a pressurised storage tank (at 3 kg/cm² ) is measured by a/an None of these Differential pressure gage Gage glass External float gage None of these Differential pressure gage Gage glass External float gage ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Zirconia probe is used for the measurement of % CO₂ in flue gas % O₂ in flue gas Humidity of air Speed of a submarine % CO₂ in flue gas % O₂ in flue gas Humidity of air Speed of a submarine ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Typical specifications for design stipulates the gain margin and phase margin to be respectively < 1.7 and < 30° > 1.7 and < 30° > 1.7 and > 30° < 1.7 and > 30° < 1.7 and < 30° > 1.7 and < 30° > 1.7 and > 30° < 1.7 and > 30° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C. - 39 and 350 - 79 and 395 - 51 and 439 - 10 and 425 - 39 and 350 - 79 and 395 - 51 and 439 - 10 and 425 ANSWER DOWNLOAD EXAMIANS APP
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