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Hydraulics and Fluid Mechanics

41.

The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ρ) and rotating at (ω) rad/s is

Answer: C

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42.

When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

Answer: C

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43.

The pressure of the liquid flowing through the divergent portion of a Venturimeter

Answer: C

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44.

Dynamic viscosity of most of the gases with rise in temperature

Answer: A

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45.

The resultant upward pressure of the fluid on an immersed body is called

Answer: B

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46.

When the Mach number is between __________ the flow is called super-sonic flow.

Answer: D

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48.

A liquid compressed in cylinder has a volume of 0.04 m⊃3; at 50 kg/cm⊃2; and a volume of 0.039 m⊃3; at 150 kg/cm⊃2;. The bulk modulus of elasticity of liquid is

Answer: B

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49.

The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.

Answer: A

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Answer: A

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