Process Control and Instrumentation Pick out the most suitable instrument for measuring temperature in the range of-40 to 425°C. Radiation pyrometer Mercury thermometer Bimetallic thermometer None of these Radiation pyrometer Mercury thermometer Bimetallic thermometer None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change? Methyl alcohal Water Carbon-tetrachloride Mercury Methyl alcohal Water Carbon-tetrachloride Mercury ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermistors are made of Iron-copper alloys Nickel-chromium alloys Ultra pure metals Metal oxides Iron-copper alloys Nickel-chromium alloys Ultra pure metals Metal oxides ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability? Mercury in glass thermometer Nitrogen in steel thermometer Alcohol in glass thermometer Fused metal (Na or K) in steel thermometer Mercury in glass thermometer Nitrogen in steel thermometer Alcohol in glass thermometer Fused metal (Na or K) in steel thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury. 250 700 350 550 250 700 350 550 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Turbine flow meters are suitable for Cryogenic flow measurements Aerospace and in air borne applications Both B and C Very limited flow ranges Cryogenic flow measurements Aerospace and in air borne applications Both B and C Very limited flow ranges ANSWER DOWNLOAD EXAMIANS APP