Hamad Process Control and Instrumentation 21/11/2021 A. Atmospheric B. Absolute C. Gauge D. None of these Related Mcqs: Thermistors are made of__________________?A. Ultra pure metals B. Metal oxides C. Iron-copper alloys D. Nickel-chromium alloys... Conversion formula for converting amplitude ratio (AR) into decibels is ________________?A. Decibel = 20 log10 (AR) B. Decibel = 20 loge (AR) C. Decibel = 20 log10 (AR)0.5 D. Decibel = 20 loge (AR)0.5... 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_______________?A. d B. d2 C. d3 D. d4... 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 ?A. Nickel B. Brass C. Chromel D. Invar... ______________ controller has the maximum stabilising time?A. P B. PD C. PI D. PID...
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