Fluid Mechanics The resistance wire used in a hot wire anemometer for conducting electrical current is made of Chromium Tungsten Copper Aluminium Chromium Tungsten Copper Aluminium ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition. ∂/∂s = 0 ∂/∂t = constant ∂/∂t = 0 ∂/∂t = constant ∂/∂s = 0 ∂/∂t = constant ∂/∂t = 0 ∂/∂t = constant ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around 10 1000 100 2000 10 1000 100 2000 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg. 1 0.01 0.1 0.001 1 0.01 0.1 0.001 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of Absolute roughness Friction co-efficient for flows at equal Reynold number Relative roughness All of these Absolute roughness Friction co-efficient for flows at equal Reynold number Relative roughness All of these ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10⁻⁶m²/s). 0.24 0.44 24000 24 0.24 0.44 24000 24 ANSWER DOWNLOAD EXAMIANS APP
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