Hydraulics And Fluid Mechanics In Me - Study Mode

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[#501] 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

(A) 400 kg/cm 2

(B) 4000 kg/cm 2

(C) 40 × 10 5 kg/cm 2

(D) 40 × 10 6 kg/cm 2

Correct Answer

(B) 4000 kg/cm 2

[#502] The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream

(A) Keeps on increasing

(B) Keeps on decreasing

(C) Remain constant

(D) May increase/decrease

Correct Answer

[#503] Select the correct statement

(A) Weber's number is the ratio of inertia force to elastic force

(B) Weber's number is the ratio of gravity force to surface tension force

(C) Weber's number is the ratio of viscous force to pressure force

(D) Weber's number is the ratio of inertia force to surface tension force

(E) Local atmospheric pressure depends upon elevation of locality only

(F) Standard atmospheric pressure is the mean local atmospheric pressure at sea level

(G) Local atmospheric pressure is always below standard atmospheric pressure

(H) A barometer reads the difference between local and standard atmospheric pressure

Correct Answer

(D) Weber's number is the ratio of inertia force to surface tension force
(F) Standard atmospheric pressure is the mean local atmospheric pressure at sea level

[#504] The discharge in an open channel corresponding to critical depth is

(A) Zero

(B) Minimum

(C) Maximum

(D) None of these

Correct Answer

[#505] A channel is said to be of most economical cross-section, if

(A) It gives maximum discharge for a given cross-sectional area and bed slope

(B) It has minimum wetted perimeter

(C) It involves lesser excavation for the designed amount of discharge

(D) All of the above

Correct Answer

(D) All of the above