38201. __________ are analysed using a polarograph.
38202. Which of the following judges the accuracy of an instrument ?
38203. On-off controllers are normally used for
38204. Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their
38205. Which of the following controllers has maximum offset ?
38206. Pressure of 0.01 psi (absolute) can be measured by __________ gauge.
38207. High temperature of around 2000°C of incandescent gas mantles is measured by a/an
38208. The unit step response of the transfer function 1/(s2 + 2s + 3)
38209. The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is
38210. Which of the following does not figure in the list of seven substances selected for international temperature scale ?
38211. A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0° C) temperature.
38212. pH meter has
38213. Routh test
38214. The open loop transfer function of a process is . In the root locus diagram, the poles will be at
38215. Water is entering a storage tank at a temperature T0 and flow rate Q0 and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross-section of the tank is A0. The model that describes the dynamic variation of temperature of water in the tank with time is given as :
38216. When a bare thermocouple is covered by a protective sheath, the response becomes
38217. What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple ?
38218. Helium gas constant volume thermometer is suitable for the measurement of a temperature of __________ °C.
38219. The transfer function of a second order system is
38220. Bode diagram are generated from output response of the system subjected to which of the following input?
38221. Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere ?
38222. Mercury thermometer can be used to measure the temperature upto __________ °C.
38223. The transfer function of a process is . If a step change is introduced into the system, then the response will be
38224. Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by
38225. Which of the following is not a differential pressure flow meter ?
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