Hydraulics and Fluid Mechanics in ME If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by H = Hg × hf H = Hg + hf H = Hg - hf H = Hg/hf H = Hg × hf H = Hg + hf H = Hg - hf H = Hg/hf ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The coefficient of discharge for an external mouthpiece depends upon Velocity of liquid Pressure of liquid Area of mouthpiece Length of mouthpiece Velocity of liquid Pressure of liquid Area of mouthpiece Length of mouthpiece ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Euler’s dimensionless number relates the following pressure force and inertial force viscous force and inertial force inertial force and gravity viscous force and buoyancy force pressure force and inertial force viscous force and inertial force inertial force and gravity viscous force and buoyancy force ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The purpose of a surge tank is To regulate flow of water to turbines by providing necessary retarding head of water To control the pressure variations due to rapid changes in the pipe line flow All of these To eliminate water hammer possibilities To regulate flow of water to turbines by providing necessary retarding head of water To control the pressure variations due to rapid changes in the pipe line flow All of these To eliminate water hammer possibilities ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be Higher than the surface of liquid Unpredictable The same as the surface of liquid Lower than the surface of liquid Higher than the surface of liquid Unpredictable The same as the surface of liquid Lower than the surface of liquid ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME In order to avoid tendency of separation at throat in a Venturimeter, the ratio of the diameter at throat to the diameter of pipe should be 1/16 to 1/8 1/3 to 1/2 1/8 to 1/4 1/4 to 1/3 1/16 to 1/8 1/3 to 1/2 1/8 to 1/4 1/4 to 1/3 ANSWER DOWNLOAD EXAMIANS APP
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