81. __________ strain gauge is the most sensitive sensing element for strain measurement.
82. Acetylene should never be conveyed through __________ pipe, as it forms an unstable compound that dissociates violently at the slightest shock.
83. The thermal efficiency of a heat engine giving an output of 4 KW with an input of 10000 Joules/sec is __________ percent.
84. Hardness & tensile strength of austenitic stainless steel can be increased by
85. In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)
86. Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
87. In which of the following reactions, application of vacuum will help ?
88. Light year is the unit of
89. Minimum number of members required to form a Public Limited Joint Stock Company is
90. Which of the following is a commonly used manometric liquid for low pressure range?
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