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 A negative gain margin expressed in decibels means a/an __________ system. Unstable Stable Critically damped None of these Unstable Stable Critically damped None of these 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 45° 90° 180° 0° 45° 90° 180° 0° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple. Chromel-alumel Platinum-platinum/rhodium Iron-constantan None of these Chromel-alumel Platinum-platinum/rhodium Iron-constantan None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to D⁴ D³ D D² D⁴ D³ D D² ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Range of hydrogen gas constant volume themometer is __________ °C. 100 - 500 -10 to 20 400 - 1000 0 to 100 100 - 500 -10 to 20 400 - 1000 0 to 100 ANSWER DOWNLOAD EXAMIANS APP
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