MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Type of flow in which the fluid particles also rotates about their own axes while flowing is known as |
| A. | compressible flow |
| B. | incompressible flow |
| C. | rotational flow |
| D. | ir-rotational flow |
| Answer» D. ir-rotational flow | |
| 2. |
Type of flow in which the density is constant for the fluid flow is known as |
| A. | compressible flow |
| B. | incompressible flow |
| C. | rotational flow |
| D. | ir-rotational flow |
| Answer» C. rotational flow | |
| 3. |
If fr = 1, then type of flow is |
| A. | super critical flow |
| B. | sub critical flow |
| C. | critical flow |
| D. | equivalent critical flow |
| Answer» D. equivalent critical flow | |
| 4. |
If Reynolds Number is between 2000 to 4000, the type of flow is, |
| A. | Laminar flow |
| B. | Transition flow |
| C. | Turbulent flow |
| D. | None of the above |
| Answer» C. Turbulent flow | |
| 5. |
When the free surface of a stream is in contact with the atmosphere and the flow is flowing due to gravitational force and atmospheric pressure, it is called |
| A. | canal |
| B. | river |
| C. | aqueduct |
| D. | all of the above |
| Answer» E. | |
| 6. |
In the gravitational system, normally Water requirements is |
| A. | 2 to 7 liter per capita per day. |
| B. | 10 to 45 liter per capita per day. |
| C. | 1 to 2 liter per capita per day. |
| D. | 150 to 200 liter per capita per day. |
| Answer» E. | |
| 7. |
The angle of converging cone is about |
| A. | 2.5° |
| B. | 7° |
| C. | 7.5° |
| D. | 20° |
| Answer» E. | |
| 8. |
Pressure of liquid per unit area is called |
| A. | pressure |
| B. | force |
| C. | Pressure intensity |
| D. | force intensity |
| Answer» D. force intensity | |
| 9. |
The perimeter of channel cross section which is in contact with flowing water is called |
| A. | perimeter |
| B. | dry perimeter |
| C. | wetted perimeter |
| D. | water perimeter |
| Answer» D. water perimeter | |
| 10. |
The cross-section is irregular in shape in artificial channel. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» C. all | |
| 11. |
Water is flowing through a rectangular notch, having base width 500 mm and head over it is160 mm. Find discharge of notch if Cd = 0.6. |
| A. | 0.0567 m3/sec |
| B. | 56.70 m3/sec |
| C. | 0.0567 lit/sec |
| D. | 56.70 lit/sec |
| Answer» B. 56.70 m3/sec | |
| 12. |
If pressure heads (P/w) of a liquid Bowing in a pipe be plotted as vertical ordinates on the center line of the pipe, then the line joining the tops of such ordinates is known as |
| A. | Hydraulic Line |
| B. | Hydraulic Gradient Line |
| C. | Total Energy Line |
| D. | Energy Line |
| Answer» C. Total Energy Line | |
| 13. |
The length of diverging cone is about |
| A. | 2.5 d1 |
| B. | 7 d1 |
| C. | 7.5 d1 |
| D. | 20 d1 |
| Answer» D. 20 d1 | |
| 14. |
Head loss due to sudden contraction. |
| A. | h = 0.5 V12/2g |
| B. | h = 0.5 V22/2g |
| C. | h = (V2 – V3)2/2g |
| D. | h = 0.5 V32/2g |
| Answer» C. h = (V2 – V3)2/2g | |
| 15. |
In ___________ Reynolds carried out number of to decide the type of flow. |
| A. | 1823 |
| B. | 1833 |
| C. | 1843 |
| D. | 1853 |
| Answer» C. 1843 | |
| 16. |
The instantaneous pictures of the position of all fluid particles, which have passed through agiven point at some previous time, are called |
| A. | stream line |
| B. | streak line |
| C. | potential line |
| D. | stream tube |
| Answer» C. potential line | |
| 17. |
In the gravitational system, normally Velocity of flow is |
| A. | 2 to 7 m/sec |
| B. | 10 to 45 m/sec |
| C. | 1 to 2 m/sec |
| D. | 150 to 200 m/sec |
| Answer» D. 150 to 200 m/sec | |
| 18. |
An average value of Cd is about 0.62. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» C. all | |
| 19. |
The cippoletti weir is a trapezoidal weir, having side slope 1 horizontal to 4 vertical. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» B. false | |
| 20. |
If fr < 1, then type of flow is |
| A. | super critical flow |
| B. | sub critical flow |
| C. | critical flow |
| D. | equivalent critical flow |
| Answer» C. critical flow | |
| 21. |
Ratio of actual velocity of flow and critical velocity of flow is known as |
| A. | Reynolds number |
| B. | Froude number |
| C. | manning’s number |
| D. | cutter’s number |
| Answer» C. manning’s number | |
| 22. |
The Hagen William formula is used to design the pipeline. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» B. false | |
| 23. |
In Reynolds experiment, beyond the upper critical velocity, the flow will be fully disturbed and such a flow is known as |
| A. | Laminar flow |
| B. | Transition flow |
| C. | Turbulent flow |
| D. | None of the above |
| Answer» D. None of the above | |
| 24. |
The equation of rectangular notch is deal with H is |
| A. | 2/3 |
| B. | 3/2 |
| C. | 5/2 |
| D. | 2/5 |
| Answer» C. 5/2 | |
| 25. |
Type of flow in which the fluid characteristics like velocity, pressure, density etc. at a pointchange with time is known as |
| A. | steady flow |
| B. | unsteady flow |
| C. | uniform flow |
| D. | non-uniform flow |
| Answer» C. uniform flow | |
| 26. |
"The intensity of pressure at any point in a fluid at rest, is same in all directions".This is statement of |
| A. | Pascal’s law |
| B. | Continuity equation |
| C. | Bernoulli’s equation |
| D. | Darcy’s law |
| Answer» B. Continuity equation | |
| 27. |
The velocity of liquid particles at the centre of pipe is less than the velocity of particles nearthe inner surface of pipe. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» C. all | |
| 28. |
For a liquid having mass 2000 kg and volume 2.5 m3. Calculate mass density. |
| A. | 0.00125 kg/m3 |
| B. | 0.00125 kN/m2 |
| C. | 800 kg/m3 |
| D. | 800 kg/m2 |
| Answer» D. 800 kg/m2 | |
| 29. |
If Reynolds Number is greater than 4000, the type of flow is, |
| A. | Laminar flow |
| B. | Transition flow |
| C. | Turbulent flow |
| D. | None of the above |
| Answer» D. None of the above | |
| 30. |
As the flow moves in the pipe, fluid pressure decreases. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» B. false | |
| 31. |
An inverted triangular plate is having base parallel to water surface with width 1.6 m and height 2.10 m. It is submerged in water in such a way that its base is 1.0 m below free surface. Find total pressure. |
| A. | 28.01 N |
| B. | 28.01 kN |
| C. | 16.48 kN |
| D. | 16.48 N |
| Answer» C. 16.48 kN | |
| 32. |
The energy possessed by a liquid particle by virtue of its existing pressure is known as |
| A. | potential energy |
| B. | kinetic energy |
| C. | pressure energy |
| D. | friction energy |
| Answer» D. friction energy | |
| 33. |
________________ is an Instrument to determine the velocity of flow at the required point in a pipe or a stream. |
| A. | Venturi meter |
| B. | orifice meter |
| C. | Pitot tube |
| D. | Venturiflume |
| Answer» D. Venturiflume | |
| 34. |
A simple manometer containing mercury is used to measure pressure of oil (sp. gr. 0.8) flowing in a pipe as shown below. Mercury level in open tube is 150 mm higher than that on left limb. If height of oil in left limb is 90 mm, determine the pressure in terms of head of water in a pipe. |
| A. | 19.306 kN/m3 |
| B. | 19.306N/m3 |
| C. | 19.306 kN/cm3 |
| D. | 19.306 N/cm3 |
| Answer» B. 19.306N/m3 | |
| 35. |
___________ is defined as the pressure at which the liquid will transform into vapour at thegiven temperature. |
| A. | Capillarity |
| B. | Viscosity |
| C. | Compressibility |
| D. | Vapor pressure |
| Answer» E. | |
| 36. |
As compared to notch, the size of weir is large. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» B. false | |
| 37. |
The measurement of velocity of flow. cross sectional area of river and discharge of water inthe river is known as |
| A. | river mapping |
| B. | river measurement |
| C. | river gauging |
| D. | none of this |
| Answer» D. none of this | |
| 38. |
The roughness of the pipe depends upon the new or old pipe. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» B. false | |
| 39. |
Such a velocity, at which the dye thread starts becoming irregular is known as |
| A. | lower critical velocity. |
| B. | upper critical velocity |
| C. | critical velocity |
| D. | None of the above |
| Answer» B. upper critical velocity | |
| 40. |
If weight density of liquid is 8.0 kN/m3 , find its specific gravity. |
| A. | 1.23 N |
| B. | 1.23 |
| C. | 0.815 N |
| D. | 0.815 |
| Answer» E. | |
| 41. |
In a static liquid, vertical distance from datum line to the free surface of liquid is known as |
| A. | head |
| B. | pressure head |
| C. | depth |
| D. | pressure depth |
| Answer» C. depth | |
| 42. |
______ is the branch of engineering dealing with the study of behaviour of liquid when it is atrest or in motion. |
| A. | Fluid Mechanics |
| B. | Hydraulics |
| C. | hydro statics |
| D. | Hydro dynamics |
| Answer» C. hydro statics | |
| 43. |
The energy possessed by a liquid particle by virtue of its position is known as |
| A. | potential energy |
| B. | kinetic energy |
| C. | pressure energy |
| D. | friction energy |
| Answer» B. kinetic energy | |
| 44. |
Head loss due to sudden enlargement. |
| A. | h = 0.5 V12/2g |
| B. | h = 0.5 V22/2g |
| C. | h = (V2 – V3)2/2g |
| D. | h = 0.5 V32/2g |
| Answer» D. h = 0.5 V32/2g | |
| 45. |
When viscosity of fluid is studied with reference to motion of fluid, it is called ___________. |
| A. | Cohesion |
| B. | Adhesion |
| C. | Dynamic Viscosity |
| D. | Kinetic Viscosity |
| Answer» E. | |
| 46. |
The lines joining the points of equal potential (head) on adjacent low lines are called |
| A. | stream line |
| B. | streak line |
| C. | potential line |
| D. | stream tube |
| Answer» D. stream tube | |
| 47. |
An opening provided in one side of a tank or a reservoir, with upstream liquid level below thetop edge of the opening is called |
| A. | circle |
| B. | orifice |
| C. | notch |
| D. | weir |
| Answer» D. weir | |
| 48. |
The diameters of a pipe at the sections 1 and 2 are 10 cm and15 cm respectively. Find the discharge through the pipe if the velocity of water flowing through the pipe at section 1 is 5 m/s. |
| A. | 0.00393 m3/sec |
| B. | 0.0393 m3/sec |
| C. | 0.393 m3/sec |
| D. | 3.93 m3/sec |
| Answer» C. 0.393 m3/sec | |
| 49. |
An average value of Cd is about |
| A. | 0.62 |
| B. | 0.64 |
| C. | 0.75 |
| D. | 0.95 to 0.99 |
| Answer» B. 0.64 | |
| 50. |
A sudden increase in the depth of canal flow is called |
| A. | specific energy curve |
| B. | Hydraulic jump |
| C. | water jump |
| D. | mean jump |
| Answer» C. water jump | |