Which of the following instruments is not used for measuring sub-zero (<0°) temperatures ? A. Platinum resistance thermometer B. Mercury in glass thermometer C. Vapor pressure thermometerD. Radiation pyrometer
Maximum differential pressure in liquid manometer is ______________ psi? A. 20B. 30 C. 40 D. 50
Which is the strongest paramagnetic gas ? A. CO2B. O2 C. NO D. NO2
Liquid column manometers are used for measuring the pressure ______________ kgf/cm2? A. > 2 (gage)B. < 3 (gage) C. < 10 (gage) D. < atmospheric
Continuous measurement of moisture content of paper in paper industry is done by measuring the_________________? A. Thermal conductivity through the paperB. Electrical resistance through the paper C. Magnetic susceptibility D. None of these
Mcleod gauge measures the _____________ pressure? A. PositiveB. Sub-atmospheric C. Very high D. Atmospheric
According to Bode stability criterion, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is_________________? A. 0° B. 45° C. 90°D. 180°
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…
Pyrometry refers to the measurement of temperature_________________? A. With the mercurial thermometer upto 350°C B. DirectlyC. Which is of higher magnitude D. All A., B. & C.
Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 – 1600°C ? A. Optical pyrometer B. Radiation pyrometer C. Photoelectric pyrometerD. Thermocouples