85. Barometer is used to measure
A.Pressure in pipes, channels etc.
C.Very low pressure
D.Difference of pressure between two points
86. Which of the following instrument can be used for measuring speed of a submarine moving in deep sea
C.Hot wire anemometer
87. Which of the following instrument can be used for measuring speed of an aeroplane (a) Venturimeter (b) Orifice plate
A.(c) hot wire anemometer
C.(e) pitot tube.
D.8.114. Which of the following instruments is used to measure flow on the application of Bernoulli's theorem
88. Which of the following instruments is used to measure flow on the application of Bernoulli's theorem
B.All of the above.
89. The speed of sound in a ideal gas varies directly as its
D.Modulus of elasticity
90. Flow maters based on obstruction principle like orifice plates can be used with Reynold's number upto approximately
91. Dynamic viscosity of most of the liquids with rise in temperature
C.(a) remains unaffected
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