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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