McqMate
1. |
When a body is placed over a liquid, it will sink down if |
A. | Gravitational force is equal to the up-thrust of the liquid |
B. | Gravitational force is less than the up-thrust of the liquid |
C. | Gravitational force is more than the up-thrust of the liquid |
D. | None of the above |
Answer» C. Gravitational force is more than the up-thrust of the liquid |
2. |
The property by virtue of which a liquid opposes relative motion between its different layers is called |
A. | Surface tension |
B. | Coefficient of viscosity |
C. | Viscosity |
D. | Osmosis |
Answer» C. Viscosity |
3. |
A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest. |
A. | Equal to |
B. | Less than |
C. | More than |
D. | None of these |
Answer» B. Less than |
4. |
Euler's dimensionless number relates the following |
A. | Inertial force and gravity |
B. | Viscous force and inertial force |
C. | Viscous force and buoyancy force |
D. | Pressure force and inertial force |
Answer» D. Pressure force and inertial force |
5. |
When a body floating in a liquid, is displaced slightly, it oscillates about |
A. | C.G. of body |
B. | Center of pressure |
C. | Center of buoyancy |
D. | Metacentre |
Answer» D. Metacentre |
6. |
When the Mach number is between __________ the flow is called super-sonic flow. |
A. | 1 and 2.5 |
B. | 2.5 and 4 |
C. | 4 and 6 |
D. | 1 and 6 |
Answer» D. 1 and 6 |
7. |
In an immersed body, centre of pressure is |
A. | At the centre of gravity |
B. | Above the centre of gravity |
C. | Below be centre of gravity |
D. | Could be above or below e.g. depending on density of body and liquid |
Answer» C. Below be centre of gravity |
8. |
Steady flow occurs when |
A. | The direction and magnitude of the velocity at all points are identical |
B. | The velocity of successive fluid particles, at any point, is the same at successive periods of time |
C. | The magnitude and direction of the velocity do not change from point to point in the fluid |
D. | The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane |
Answer» B. The velocity of successive fluid particles, at any point, is the same at successive periods of time |
9. |
A flow is called super-sonic if the |
A. | Velocity of flow is very high |
B. | Discharge is difficult to measure |
C. | Mach number is between 1 and 6 |
D. | None of these |
Answer» C. Mach number is between 1 and 6 |
10. |
In a forced vortex, the velocity of flow everywhere within the fluid is |
A. | Maximum |
B. | Minimum |
C. | Zero |
D. | Nonzero finite |
Answer» D. Nonzero finite |
11. |
Mach number is significant in |
A. | Supersonics, as with projectiles and jet propulsion |
B. | Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. |
C. | Simultaneous motion through two fluids where there is a surface of discontinuity, gravity force, and wave making effects, as with ship's hulls |
D. | All of the above |
Answer» A. Supersonics, as with projectiles and jet propulsion |
12. |
In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than |
A. | Frictional force |
B. | Viscosity |
C. | Surface friction |
D. | All of the above |
Answer» D. All of the above |
13. |
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by |
A. | dQ/Q = 3/2 × (dH/H) |
B. | dQ/Q = 2 × (dH/H) |
C. | dQ/Q = 5/2 × (dH/H) |
D. | dQ/Q = 3 × (dH/H) |
Answer» C. dQ/Q = 5/2 × (dH/H) |
14. |
For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal |
A. | Ratio of inertial force to force due to viscosity |
B. | Ratio of inertial force to force due to gravitation |
C. | Ratio of inertial force to force due to surface tension |
D. | All the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity |
Answer» D. All the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity |
15. |
The value of coefficient of velocity for a sharp edged orifice __________ with the head of water. |
A. | Decreases |
B. | Increases |
C. | Remain same |
D. | None of these |
Answer» B. Increases |
16. |
If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be |
A. | Higher than the surface of liquid |
B. | The same as the surface of liquid |
C. | Lower than the surface of liquid |
D. | Unpredictable |
Answer» C. Lower than the surface of liquid |
17. |
The ratio of the inertia force to the __________ is called Euler's number. |
A. | Pressure force |
B. | Elastic force |
C. | Surface tension force |
D. | Viscous force |
Answer» A. Pressure force |
18. |
A one dimensional flow is one which |
A. | Is uniform flow |
B. | Is steady uniform flow |
C. | Takes place in straight lines |
D. | Involves zero transverse component of flow |
Answer» D. Involves zero transverse component of flow |
19. |
According to Manning's formula, the discharge through an open channel is (where M = Manning's constant) |
A. | A × M × m1/2 × i2/3 |
B. | A × M × m2/3 × i1/2 |
C. | A1/2 × M 2/3 × m × i |
D. | A2/3 × M1/3 × m × i |
Answer» B. A × M × m2/3 × i1/2 |
20. |
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called |
A. | Weir |
B. | Notch |
C. | Orifice |
D. | None of these |
Answer» B. Notch |
21. |
The property of fluid by virtue of which it offers resistance to shear is called |
A. | Surface tension |
B. | Adhesion |
C. | Cohesion |
D. | Viscosity |
Answer» D. Viscosity |
22. |
Coefficient of velocity is defined as the ratio of |
A. | Actual velocity of jet at vena contracta to the theoretical velocity |
B. | Area of jet at vena contracta to the area of orifice |
C. | Actual discharge through an orifice to the theoretical discharge |
D. | None of the above |
Answer» A. Actual velocity of jet at vena contracta to the theoretical velocity |
23. |
The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is |
A. | 200 kg/m3 |
B. | 400 kg/m3 |
C. | 600 kg/m3 |
D. | 800 kg/m3 |
Answer» D. 800 kg/m3 |
24. |
A fluid in equilibrium can't sustain |
A. | Tensile stress |
B. | Compressive stress |
C. | Shear stress |
D. | Bending stress |
Answer» C. Shear stress |
25. |
When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow. |
A. | Less than |
B. | More than |
C. | Equal to |
D. | None of these |
Answer» A. Less than |
26. |
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is |
A. | 10 m/sec² |
B. | 9.81 m/sec² |
C. | 9.75 m/sec² |
D. | 9 m/sec |
Answer» A. 10 m/sec² |
27. |
A flow is called hyper-sonic, if the Mach number is |
A. | Less than unity |
B. | Unity |
C. | Between 1 and 6 |
D. | None of these |
Answer» D. None of these |
28. |
Liquids |
A. | Cannot be compressed |
B. | Occupy definite volume |
C. | Are not affected by change in pressure and temperature |
D. | None of the above |
Answer» D. None of the above |
29. |
When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of |
A. | A triangle |
B. | A paraboloid |
C. | An ellipse |
D. | None of these |
Answer» B. A paraboloid |
30. |
Fluid is a substance that |
A. | Cannot be subjected to shear forces |
B. | Always expands until it fills any container |
C. | Has the same shear stress at a point regardless of its motion |
D. | Cannot remain at rest under action of any shear force |
Answer» D. Cannot remain at rest under action of any shear force |
31. |
The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called |
A. | Newton's law of motion |
B. | Newton's law of cooling |
C. | Newton's law of viscosity |
D. | Newton's law of resistance |
Answer» D. Newton's law of resistance |
32. |
The property of a fluid which enables it to resist tensile stress is known as |
A. | Compressibility |
B. | Surface tension |
C. | Cohesion |
D. | Adhesion |
Answer» C. Cohesion |
33. |
The loss of pressure head in case of laminar flow is proportional to |
A. | Velocity |
B. | (Velocity)2 |
C. | (Velocity)3 |
D. | (Velocity)4 |
Answer» A. Velocity |
34. |
The surface tension of mercury at normal temperature compared to that of water is |
A. | More |
B. | Less |
C. | Same |
D. | More or less depending on size of glass tube |
Answer» A. More |
35. |
An air vessel is provided at the summit in a siphon to |
A. | Avoid interruption in the flow |
B. | Increase discharge |
C. | Increase velocity |
D. | Maintain pressure difference |
Answer» A. Avoid interruption in the flow |
36. |
The unit of viscosity is |
A. | Metres² per sec |
B. | kg-sec/metre |
C. | Newton-sec per metre² |
D. | Newton-sec per meter |
Answer» B. kg-sec/metre |
37. |
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. |
Answer» D. Weber's number is the ratio of inertia force to surface tension force. |
38. |
Choose the wrong statement. Alcohol is used in manometer, because |
A. | Its vapour pressure is low |
B. | It provides suitable meniscus for the inclined tube |
C. | Its density is less |
D. | It provides longer length for a given pressure difference |
Answer» A. Its vapour pressure is low |
39. |
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid |
A. | Remains horizontal |
B. | Becomes curved |
C. | Falls on the front end |
D. | Falls on the back end |
Answer» C. Falls on the front end |
40. |
A pressure of 25 m of head of water is equal to |
A. | 25 kN/ m² |
B. | 245 kN/ m² |
C. | 2500 kN/m² |
D. | 2.5 kN/ m² |
Answer» B. 245 kN/ m² |
41. |
The hammer blow in pipes occurs when |
A. | There is excessive leakage in the pipe |
B. | The pipe bursts under high pressure of fluid |
C. | The flow of fluid through the pipe is suddenly brought to rest by closing of the valve |
D. | The flow of fluid through the pipe is gradually brought to rest by closing of the valve |
Answer» C. The flow of fluid through the pipe is suddenly brought to rest by closing of the valve |
42. |
The resultant upward pressure of the fluid on an immersed body is called |
A. | Up-thrust |
B. | Buoyancy |
C. | Center of pressure |
D. | All the above are correct |
Answer» B. Buoyancy |
43. |
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as |
A. | Narrow-crested weir |
B. | Broad-crested weir |
C. | Ogee weir |
D. | Submerged weir |
Answer» D. Submerged weir |
44. |
If the surface of liquid is convex, men |
A. | Cohesion pressure is negligible |
B. | Cohesion pressure is decreased |
C. | Cohesion pressure is increased |
D. | There is no cohesion pressure |
Answer» C. Cohesion pressure is increased |
45. |
The atmospheric pressure with rise in altitude decreases |
A. | Linearly |
B. | First slowly and then steeply |
C. | First steeply and then gradually |
D. | Unpredictable |
Answer» B. First slowly and then steeply |
46. |
Dynamic viscosity of most of the gases with rise in temperature |
A. | Increases |
B. | Decreases |
C. | Remain unaffected |
D. | Unpredictable |
Answer» A. Increases |
47. |
According to Bernoulli's equation |
A. | Z + p/w + v²/2g = constant |
B. | Z + p/w - v²/2g = constant |
C. | Z - p/w + v²/2g = constant |
D. | Z - p/w - v²/2g = constant |
Answer» A. Z + p/w + v²/2g = constant |
48. |
Newton's law of viscosity is a relationship between |
A. | Pressure, velocity and temperature |
B. | Shear stress and rate of shear strain |
C. | Shear stress and velocity |
D. | Rate of shear strain and temperature |
Answer» B. Shear stress and rate of shear strain |
49. |
Differential manometer is used to measure |
A. | Pressure in pipes, channels etc. |
B. | Atmospheric pressure |
C. | Very low pressure |
D. | Difference of pressure between two points |
Answer» D. Difference of pressure between two points |
50. |
Non uniform flow occurs when |
A. | The direction and magnitude of the velocity at all points are identical |
B. | The velocity of successive fluid particles, at any point, is the same at successive periods of time |
C. | Velocity, depth, pressure, etc. change from point to point in the fluid flow. |
D. | The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane |
Answer» C. Velocity, depth, pressure, etc. change from point to point in the fluid flow. |
51. |
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury? |
A. | 0.5 |
B. | 0.4 |
C. | 0.515 |
D. | 0.5 |
Answer» C. 0.515 |
52. |
A flow through an expanding tube at constant rate is called |
A. | Steady uniform flow |
B. | Steady non-uniform flow |
C. | Unsteady uniform flow |
D. | Unsteady non-uniform flow |
Answer» B. Steady non-uniform flow |
53. |
Reynolds number is significant in |
A. | Supersonics, as with projectile and jet propulsion |
B. | Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. |
C. | Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls |
D. | All of the above |
Answer» B. Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. |
54. |
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number) |
A. | 1/RN |
B. | 4/RN |
C. | 16/RN |
D. | 64/RN |
Answer» C. 16/RN |
55. |
The tendency of a liquid surface to contract is due to the following property |
A. | Cohesion |
B. | Adhesion |
C. | Viscosity |
D. | Surface tension |
Answer» D. Surface tension |
56. |
The Newton's law of resistance is based on the assumption that the |
A. | Planes of the body are completely smooth |
B. | Space around the body is completely filled with the fluid |
C. | Fluid particles do not exert any influence on one another |
D. | All of the above |
Answer» D. All of the above |
57. |
For manometer, a better liquid combination is one having |
A. | Higher surface tension |
B. | Lower surface tension |
C. | Surface tension is no criterion |
D. | High density and viscosity |
Answer» A. Higher surface tension |
58. |
The flow in a pipe is neither laminar nor turbulent when Reynold number is |
A. | Less than 2000 |
B. | Between 2000 and 2800 |
C. | More than 2800 |
D. | None of these |
Answer» B. Between 2000 and 2800 |
59. |
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as |
A. | Meta center |
B. | Center of pressure |
C. | Center of buoyancy |
D. | Center of gravity |
Answer» B. Center of pressure |
60. |
Stoke is the unit of |
A. | Kinematic viscosity in C. G. S. units |
B. | Kinematic viscosity in M. K. S. units |
C. | Dynamic viscosity in M. K. S. units |
D. | Dynamic viscosity in S. I. units |
Answer» A. Kinematic viscosity in C. G. S. units |
61. |
The vapour pressure over the concave surface is |
A. | Less man the vapour pressure over the plane surface |
B. | Equal to the vapour pressure over the plane surface |
C. | Greater than the vapour pressure over the plane surface |
D. | Zero |
Answer» A. Less man the vapour pressure over the plane surface |
62. |
The velocity at which the flow changes from laminar flow to turbulent flow is called |
A. | Critical velocity |
B. | Velocity of approach |
C. | Sub-sonic velocity |
D. | Super-sonic velocity |
Answer» A. Critical velocity |
63. |
Mercury is often used in barometer because |
A. | It is the best liquid |
B. | The height of barometer will be less |
C. | Its vapour pressure is so low that it may be neglected |
D. | Both (B) and (C) |
Answer» D. Both (B) and (C) |
64. |
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct? |
A. | The pressure on the wall at the liquid level is minimum |
B. | The pressure on the bottom of the wall is maximum |
C. | The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum |
D. | The pressure on the bottom of the wall is zero |
Answer» C. The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum |
65. |
Center of pressure compared to e.g. is |
A. | Above it |
B. | Below it |
C. | At same point |
D. | Above or below depending on area of body |
Answer» B. Below it |
66. |
The centre of gravity of the volume of the liquid displaced by an immersed body is called |
A. | Centre of gravity |
B. | Centre of pressure |
C. | Metacentre |
D. | Centre of buoyancy |
Answer» D. Centre of buoyancy |
67. |
Gradually varied flow is |
A. | Steady uniform |
B. | Non-steady non-uniform |
C. | Non-steady uniform |
D. | Steady non- uniform |
Answer» D. Steady non- uniform |
68. |
The viscosity of water at 20°C is |
A. | One stoke |
B. | One centistoke |
C. | One poise |
D. | One centipoise |
Answer» D. One centipoise |
69. |
The velocity of jet of water travelling out of opening in a tank filled with water is proportional to |
A. | Head of water (h) |
B. | h² |
C. | V/T |
D. | h/2 |
Answer» C. V/T |
70. |
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe) |
A. | flv²/2gd |
B. | flv²/gd |
C. | 3flv²/2gd |
D. | 4flv²/2gd |
Answer» D. 4flv²/2gd |
71. |
According to Bernoulli's equation for steady ideal fluid flow |
A. | Principle of conservation of mass holds |
B. | Velocity and pressure are inversely proportional |
C. | Total energy is constant throughout |
D. | The energy is constant along a streamline but may vary across streamlines |
Answer» D. The energy is constant along a streamline but may vary across streamlines |
72. |
The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water. |
A. | Equal to |
B. | One-half |
C. | Three fourth |
D. | Double |
Answer» D. Double |
73. |
Bernoulli equation deals with the law of conservation of |
A. | Mass |
B. | Momentum |
C. | Energy |
D. | Work |
Answer» C. Energy |
74. |
Principle of similitude forms the basis of |
A. | Comparing two identical equipments |
B. | Designing models so that the result can be converted to prototypes |
C. | Comparing similarity between design and actual equipment |
D. | Hydraulic designs |
Answer» B. Designing models so that the result can be converted to prototypes |
75. |
The rise of liquid along the walls of a revolving cylinder about the initial level is __________ the depression of the liquid at the axis of rotation. |
A. | Same as |
B. | Less than |
C. | More than |
D. | None of these |
Answer» A. Same as |
76. |
Hot wire anemometer is used to measure |
A. | Pressure in gases |
B. | Liquid discharge |
C. | Pressure in liquids |
D. | Gas velocities |
Answer» D. Gas velocities |
77. |
Venturimeter is used to |
A. | Measure the velocity of a flowing liquid |
B. | Measure the pressure of a flowing liquid |
C. | Measure the discharge of liquid flowing in a pipe |
D. | Measure the pressure difference of liquid flowing between two points in a pipe line |
Answer» C. Measure the discharge of liquid flowing in a pipe |
78. |
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to |
A. | The weight of the body |
B. | More than the weight of the body |
C. | Less than the weight of the body |
D. | Weight of the fluid displaced by the body |
Answer» D. Weight of the fluid displaced by the body |
79. |
The pressure measured with the help of a pressure gauge is called |
A. | Atmospheric pressure |
B. | Gauge pressure |
C. | Absolute pressure |
D. | Mean pressure |
Answer» B. Gauge pressure |
80. |
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if |
A. | The area is horizontal |
B. | The area is vertical |
C. | The area is inclined |
D. | All of the above |
Answer» D. All of the above |
81. |
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to |
A. | Half the depth |
B. | Half the breadth |
C. | Twice the depth |
D. | Twice the breadth |
Answer» A. Half the depth |
82. |
Capillary action is due to the |
A. | Surface tension |
B. | Cohesion of the liquid |
C. | Adhesion of the liquid molecules and the molecules on the surface of a solid |
D. | All of the above |
Answer» D. All of the above |
83. |
The intensity of pressure on an immersed surface __________ with the increase in depth. |
A. | Does not change |
B. | Increases |
C. | Decreases |
D. | None of these |
Answer» B. Increases |
84. |
Which of the following statement is correct? |
A. | In a compressible flow, the volume of the flowing liquid changes during the flow |
B. | A flow, in which the volume of the flowing liquid does not change, is called incompressible flow |
C. | When the particles rotate about their own axes while flowing, the flow is said to be rotational flow |
D. | All of the above |
Answer» D. All of the above |
85. |
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will |
A. | Increase |
B. | Decrease |
C. | Remain same |
D. | Increase/decrease depending on depth of immersion |
Answer» C. Remain same |
86. |
A flow through a long pipe at constant rate is called |
A. | Steady uniform flow |
B. | Steady non-uniform flow |
C. | Unsteady uniform flow |
D. | Unsteady non-uniform flow |
Answer» A. Steady uniform flow |
87. |
Choose the wrong statement |
A. | Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force |
B. | Viscosity is due primarily to interaction between fluid molecules |
C. | Viscosity of liquids decreases with increase in temperature |
D. | Viscosity of liquids is appreciably affected by change in pressure |
Answer» D. Viscosity of liquids is appreciably affected by change in pressure |
88. |
The unit of dynamic viscosity in S.I. units is |
A. | N-m/s2 |
B. | N-s/m2 |
C. | Poise |
D. | Stoke |
Answer» B. N-s/m2 |
89. |
A perfect gas |
A. | Has constant viscosity |
B. | Has zero viscosity |
C. | Is in compressible |
D. | None of the above |
Answer» D. None of the above |
90. |
In a free nappe, |
A. | The pressure below the nappe is atmospheric |
B. | The pressure below the nappe is negative |
C. | The pressure above the nappe is atmospheric |
D. | The pressure above the nappe is negative |
Answer» A. The pressure below the nappe is atmospheric |
91. |
In a static fluid |
A. | Resistance to shear stress is small |
B. | Fluid pressure is zero |
C. | Linear deformation is small |
D. | Only normal stresses can exist |
Answer» D. Only normal stresses can exist |
92. |
One litre of water occupies a volume of |
A. | 1000 cm3 |
B. | 250 cm3 |
C. | 500 cm3 |
D. | 100 cm3 |
Answer» A. 1000 cm3 |
93. |
A balloon lifting in air follows the following principle |
A. | Law of gravitation |
B. | Archimedes principle |
C. | Principle of buoyancy |
D. | All of the above |
Answer» D. All of the above |
94. |
The ratio of absolute viscosity to mass density is known as |
A. | Specific viscosity |
B. | Viscosity index |
C. | Kinematic viscosity |
D. | Coefficient of viscosity |
Answer» C. Kinematic viscosity |
95. |
Reynold's number is the ratio of inertia force to |
A. | Pressure force |
B. | Elastic force |
C. | Gravity force |
D. | Viscous force |
Answer» D. Viscous force |
96. |
Metacentric height is given as the distance between |
A. | The center of gravity of the body and the metacentre |
B. | The center of gravity of the body and the center of buoyancy |
C. | The center of gravity of the body and the center of pressure |
D. | Center of buoyancy and metacentre |
Answer» A. The center of gravity of the body and the metacentre |
97. |
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be |
A. | Double |
B. | Four times |
C. | Eight times |
D. | Sixteen times |
Answer» A. Double |
98. |
The continuity equation is connected with |
A. | Open channel/pipe flow |
B. | Compressibility of fluids |
C. | Conservation of mass |
D. | Steady/unsteady flow |
Answer» C. Conservation of mass |
99. |
The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to |
A. | 1/2 × depth |
B. | 1/2 × breadth |
C. | 1/2 × sloping side |
D. | 1/4 × (depth + breadth) |
Answer» A. 1/2 × depth |
100. |
The absolute pressure is equal to |
A. | Gauge pressure + atmospheric pressure |
B. | Gauge pressure - atmospheric pressure |
C. | Atmospheric pressure - gauge pressure |
D. | Gauge pressure - vacuum pressure |
Answer» A. Gauge pressure + atmospheric pressure |
Done Reading?