Process Control and Instrumentation Which of the following filled system expansion thermometer has the capability to measure the lowest temperature? Alcohol in glass thermometer Mercury in steel thermometer Mercury in glass thermometer Fused metal (Na or K) in steel thermometer Alcohol in glass thermometer Mercury in steel thermometer Mercury in glass thermometer Fused metal (Na or K) in steel thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A negative gain margin expressed in decibels means a/an __________ system. Unstable Critically damped Stable None of these Unstable Critically damped Stable None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Time constant is the Same as transportation lag Time required by the measured variable to reach 63.2% of its ultimate change Same as dead time Time taken by the controlled variable to reach 63.2% of its full change Same as transportation lag Time required by the measured variable to reach 63.2% of its ultimate change Same as dead time Time taken by the controlled variable to reach 63.2% of its full change ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature. Increase of thermal conductivity Volumetric expansion Increase of pressure Differential linear expansion Increase of thermal conductivity Volumetric expansion Increase of pressure Differential linear expansion ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an __________ pyrometer. Radiation None of these Optical Photoelectric Radiation None of these Optical Photoelectric ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following instruments is not used for measuring sub-zero (<0°) temperatures? Radiation pyrometer Platinum resistance thermometer Vapor pressure thermometer Mercury in glass thermometer Radiation pyrometer Platinum resistance thermometer Vapor pressure thermometer Mercury in glass thermometer ANSWER DOWNLOAD EXAMIANS APP
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