Q. The hammer blow in pipes occurs when

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Q. When a body is placed over a liquid, it will sink down if

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Q. When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis ω rad/s, then depth of parabola which the liquid assumes is

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Q. A manometer is used to measure

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Q. The product of mass and accelaration of flowing liquid is called

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Q. The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)

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Q. If the value of coefficient of discharge increases, the discharge through the orifice decreases.

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Q. A point, in a compressible flow where the velocity of fluid is zero, is called

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Q. A differential manometer is used to measure

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Q. The metacentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is

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Q. The point at which the resultant pressure on an immersed surface acts, is known as

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Q. A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to bring the liquid level from H1 to H2 will be

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Q. The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)

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Q. The power transmitted through the nozzle is maximum when the head lost due to friction in the pipe is __________ of the total supply head.

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Q. In case of flow through parallel pipes,

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Q. The flow at critical depth in an open channel is called torrential flow.

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Q. The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)

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Q. Coefficient of velocity is defined as the ratio of

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Q. The mass of 2.5 m³ of a certain liquid is 2 tonnes. Its mass density is

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Q. The dynamic viscosity of the liquid __________ with rise in temperature.

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