101. 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.
102. In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is
103. The closed loop pole of a stable second order system could be
104. When a bare thermocouple is covered by a protective sheath, the response becomes
105. Range of hydrogen gas constant volume themometer is __________ °C.
106. Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is
107. A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in
108. Which of the following fluid flow measuring devices can measure the largest flow rate?
109. 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?
110. Liquid flow rate in an open channel can not be measured by a/an
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