Process Control and Instrumentation Phase margin is equal to Phase lag - 180° Phase lag + 180° 180° - phase lag Phase lag + 90° Phase lag - 180° Phase lag + 180° 180° - phase lag Phase lag + 90° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a second order instrument? Mercury in glass thermometer with covering None of these Bare mercury in glass thermometer Pressure gauge with one bellow, two tubes and a tank Mercury in glass thermometer with covering None of these Bare mercury in glass thermometer Pressure gauge with one bellow, two tubes and a tank ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation On-off controllers are normally used for Low loads Temperature changes Flow rate changes None of these Low loads Temperature changes Flow rate changes 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 D² D³ D D⁴ D² D³ D D⁴ ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation __________ is undesirable in thermocouples used in industries, Corrosion resistance Linear relation of emf to temperature Oxidation resistance Non-linear relation of emf to temperature Corrosion resistance Linear relation of emf to temperature Oxidation resistance Non-linear relation of emf to temperature 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 Speed of response Static characteristics Fidielity Reproducibility Speed of response Static characteristics Fidielity Reproducibility ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS