Process Control and Instrumentation Nichol's chart deals with R. vs. phase lag of second order R. vs. phase lag of first order Closed loop values vs. open loop values Frequency response values of controllers R. vs. phase lag of second order R. vs. phase lag of first order Closed loop values vs. open loop values Frequency response values of controllers ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is 90° 180° 0° 45° 90° 180° 0° 45° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following filled system expansion thermometer has the capability to measure the lowest temperature? Mercury in steel thermometer Alcohol in glass thermometer Fused metal (Na or K) in steel thermometer Mercury in glass thermometer Mercury in steel thermometer Alcohol in glass thermometer Fused metal (Na or K) in steel thermometer Mercury in glass thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change? Carbon-tetrachloride Water Methyl alcohal Mercury Carbon-tetrachloride Water Methyl alcohal Mercury ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if Kc is reduced Integral control action is introduced Kc is increased Derivative control action is introduced Kc is reduced Integral control action is introduced Kc is increased Derivative control action is introduced ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Flapper nozzle is used in a/an __________ controller. None of these Pneumatic Electronic Hydraulic None of these Pneumatic Electronic Hydraulic ANSWER DOWNLOAD EXAMIANS APP
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