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 0° 90° 180° 45° 0° 90° 180° 45° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Degree to which an instrument indicates the changes in measured variable without dynamic error is called its Fidielity Reproducibility Speed of response Static characteristics Fidielity Reproducibility Speed of response Static characteristics ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following controllers has maximum offset? P-I-D controller P-I controller P-controller P-D controller P-I-D controller P-I controller P-controller P-D controller ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The function of a transducer is to Convert the primary signal into a more useful quantity, usually an electric impulse Codify/decodify the input signal Modify the input signal Amplify the input signal Convert the primary signal into a more useful quantity, usually an electric impulse Codify/decodify the input signal Modify the input signal Amplify the input signal 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
Process Control and Instrumentation Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion? Nickel Invar Chromel Brass Nickel Invar Chromel Brass ANSWER DOWNLOAD EXAMIANS APP
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