Hydraulics and Fluid Mechanics MCQs | Page - 1

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M

Mr. Dubey • 51.72K Points
Coach

Q. An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

(A) 10 m/sec²
(B) 9.81 m/sec²
(C) 9.75 m/sec²
(D) 9 m/sec
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M

Mr. Dubey • 51.72K Points
Coach

Q. A flow is called hyper-sonic, if the Mach number is

(A) Less than unity
(B) Unity
(C) Between 1 and 6
(D) None of these
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M

Mr. Dubey • 51.72K Points
Coach

Q. Liquids

(A) Cannot be compressed
(B) Occupy definite volume
(C) Are not affected by change in pressure and temperature
(D) None of the above
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M

Mr. Dubey • 51.72K Points
Coach

Q. When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of

(A) A triangle
(B) A paraboloid
(C) An ellipse
(D) None of these
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M

Mr. Dubey • 51.72K Points
Coach

Q. Fluid is a substance that

(A) Cannot be subjected to shear forces
(B) Always expands until it fills any container
(C) Has the same shear stress at a point regardless of its motion
(D) Cannot remain at rest under action of any shear force
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M

Mr. Dubey • 51.72K Points
Coach

Q. The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called

(A) Newton's law of motion
(B) Newton's law of cooling
(C) Newton's law of viscosity
(D) Newton's law of resistance
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Mr. Dubey • 51.72K Points
Coach

Q. The property of a fluid which enables it to resist tensile stress is known as

(A) Compressibility
(B) Surface tension
(C) Cohesion
(D) Adhesion
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Mr. Dubey • 51.72K Points
Coach

Q. The loss of pressure head in case of laminar flow is proportional to

(A) Velocity
(B) (Velocity)2
(C) (Velocity)3
(D) (Velocity)4
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M

Mr. Dubey • 51.72K Points
Coach

Q. The surface tension of mercury at normal temperature compared to that of water is

(A) More
(B) Less
(C) Same
(D) More or less depending on size of glass tube
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Mr. Dubey • 51.72K Points
Coach

Q. An air vessel is provided at the summit in a siphon to

(A) Avoid interruption in the flow
(B) Increase discharge
(C) Increase velocity
(D) Maintain pressure difference
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