Engineering MCQ Quiz Hub

1. A pitot tube is used to measure
pressure
difference in pressure
velocity of flow
none of these.

2. The thickness of a sharp crested weir is kept less than
one-third of the height of water on the sill
one-half of the height of water on the sill
one-fourth of the height of water on the sill
two-third of the height of water on the sill

3. The property of steam function ψ is :
ψ is constant everwhere on any stream line
the flow around any path in the fluid is zero for continuous flow
the rate of change of ψ with distance in an arbitrary direction, is proportional to the component of velocity normal to that direction
all the above.

4. The maximum vacuum created at the summit of a syphon is
2.7 m of water
7.4 m of water
5.5 m of water
none.

5. If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.1 kg/cm2, the pressure at a depth of 2.5 m, is
1 metre of water
2 metres of water
3 metres of water
3.5 metres of water

6. The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid, if
area is horizontal
area is vertical
area is inclined
all the above.

7. If the volume of a liquid weighing 3000 kg is 4 cubic metres, 0.75 is its
specific weight
specific mass
specific gravity
none of these.

8. Bernoulli's equation assumes that
fluid is non-viscous
fluid is homogeneous
flow is steady
all the above.

9. A syphon is used
to connect water reservoirs at different levels intervened by a hill
to supply water to a town from higher level to lower level
to fill up a tank with water at higher level from a lower level
none of these.

10. Most economical section of a circular channel for maximum discharge
depth of water = 0.95 diameter of circular section
hydraulic mean depth = 0.286 diameter of circular section
wetted perimeter = 2.6 diameter of circular section
all the above.

11. The ratio of maximum velocity to average velocity of viscous fluid through a circular pipe is
0.5
0.75
1.25
2

12. The shear stress distribution in viscous fluid through a circular pipe is :
maximum at the centre
maximum at the inside of surface
same throughout the section
none of these.

13. The side slope of Cipolletti weir is generally kept
1 to 4
1 to 3
1 to 2
1 : 5

14. The momentum correction factor (β) for the viscous flow through a circular pipe is
1.25
1.33
1.5
1.66

15. A piezometer opening in pipes measures
velocity head
static pressure
total pressure
negative static pressure.

16. An independent mass of a fluid does not posses
elevation energy
kinetic energy
pressure energy
none of these.

17. A short tube mouthpiece will not run full at its outlet if the head under which the orifice works, is
less than 12.2 m of the water
more than 12.2 m of the water
equal of 12.2 m of water
none of these.

18. Hydrostatic pressure on a dam depends upon its
length
depth
shape
both (b) and (c).

19. Maximum efficiency of transmission of power through a pipe, is
25%
33.30%
50%
66.67%.

20. An ideal flow of a liquid obeys
Continuity equation
Newton's law of viscosity
Newton's second law of motion
dynamic viscosity law,

21. Reynold number is the ratio of initial force and
viscosity
elasticity
gravitational force
surface tension.

22. When a body is totally or partially immersed in a fluid, it is buoyed up by a force equal to
weight of the body
weight of the fluid displaced by the body
weight of the body and fluild displaced by the body
none of these.

23. If the total head of the nozzle of a pipe is 37.5 m and discharge is 1 cumec, the power generated is
400 H.P.
450 H.P.
500 H.P.
550 H.P.

24. The phenomenon occuring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream causing a distinct rise of liquid surface, is
water hammer
hydraulic jump
critical discharge
none of these.

25. The horizontal component of the force on a curved surface is equal to
weight of liquid vertically below the curved surface
force on a vetical projection of the curved surface
product of pressure at its centroid and the area
weight of liquid retained by the curved area.

26. The radius of gyration of the water line of a floating ship is 4 m and its metacentric height is 72.5 cm. The period of oscillation of the ship, is
π
2π
3π
4π

27. Differential manometers are used to measure
pressure in water channels, pipes, etc.
difference in pressure at two points
atmospheric pressure
very low pressure.

28. A tank 4m x 3m x 2m containing an oil of specific gravity 0.83 is moved with an acceleration g/2 m sec2. The ratio of the pressures at its bottom when it is moving vertically up and down, is
2
3
1 upon 2
1 upon 3

29. Highest dam in India, is
Bhakra dam
Hirakund dam
Nagarjuna Sagar dam
Iddiki dam.