Civil Engineering MCQs

Page No. 184

In a forced vortex motion, the velocity of flow is________________?


adirectly proportional to its radial distance from axis of rotation


binversely proportional to its radial distance from the axis of rotation


cinversely proportional to the square of its radial distance from the axis of rotation


d directly proportional to the square of its radial distance from the axis of rotation



Equation of continuity is based on the principle of conservation of_________________?


amass


b energy


c momentum


d none of the above


View Answer mass

The pitot tube is used to measure________________?


a velocity at stagnation point


b stagnation pressure


cstatic pressure


ddynamic pressure



The theoretical value of coefficient of contraction of a sharp edged orifice is_______________?


a 0.611


b 0.85


c 0.98


d 1.00


View Answer 0.611

Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by________________?


a 5%


b10%


c15%


d 20%


View Answer 5%

The pressure at the summit of a syphon is_______________?


aequal to atmospheric


bless than atmospheric


c more than atmospheric


dnone of the above


View Answer less than atmospheric

Coefficient of velocity for Borda’s mouth piece running full is________________?


a 0.611


b0.707


c0.855


d 1.00


View Answer 0.707

The major loss of energy in long pipes is due to_______________?


asudden enlargement


bsudden contraction


cgradual contraction or enlargement


dfriction


View Answer friction

Which of the following has highest coefficient of discharge ?


asharp edged orifice


b venturimeter


cBorda’s mouthpiece running full


dCipoUetti weir


View Answer venturimeter

The discharge over a broad crested weir is maximum when the depth of flow is_______________?


a H/3


b H/2


c2 H/5


d 2 H/3


View Answer 2 H/3

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