Hydraulics and Fluid Mechanics in ME The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to Half the breadth Half the depth Twice the depth Twice the breadth Half the breadth Half the depth Twice the depth Twice the breadth ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe. None of these Less than More than Equal to None of these Less than More than Equal to ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called Pascal’s law Archimedes’s principle Principle of flotation Bernoulli’s theorem Pascal’s law Archimedes’s principle Principle of flotation Bernoulli’s theorem ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to 1/2 × sloping side 1/2 × breadth 1/2 × depth 1/4 × (depth + breadth) 1/2 × sloping side 1/2 × breadth 1/2 × depth 1/4 × (depth + breadth) ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME A flow is called sub-sonic, if the Mach number is Unity Between 1 and 6 More than 6 Less than unity Unity Between 1 and 6 More than 6 Less than unity ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is greater than 2d between 1.5 d and 2d less than d between d and 1.5 d greater than 2d between 1.5 d and 2d less than d between d and 1.5 d ANSWER DOWNLOAD EXAMIANS APP
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