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 45° 0° 180° 90° 45° 0° 180° 90° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is H/G G/H G/(1 + H) H(1 + G) H/G G/H G/(1 + H) H(1 + G) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by Reducing value of Kc Introducing derivative control Introducing integral control None of these Reducing value of Kc Introducing derivative control Introducing integral control None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with Air Oil Mercury A metal powder or graphite Air Oil Mercury A metal powder or graphite ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The fluid used in hydraulic controller is Steam Water Air Oil Steam Water Air Oil ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The temperature range for which copper resistance thermometer can be used is __________ °C -200 to 150 350 to 750 0 to 150 500 to 900 -200 to 150 350 to 750 0 to 150 500 to 900 ANSWER DOWNLOAD EXAMIANS APP
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