MCQOPTIONS
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MCQOPTIONS
This section includes 115 Mcqs, each offering curated multiple-choice questions to sharpen your Maharashtra CET knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
A circular plate of diameter 1.6 m is placed vertically in water in such a way that the centre of the plate is 2.5 m below the free surface of the water. The location of the centre of pressure is |
| A. | 2.564 m |
| B. | 2.5 m |
| C. | 2.864 m |
| D. | 2.654 m |
| Answer» B. 2.5 m | |
| 52. |
A water tank contains 1.3 m deep water. The pressure exerted by water per metre length of tank is |
| A. | 8.29 kN |
| B. | 18.29 kN |
| C. | 28.9 kN |
| D. | 0.28 kN |
| Answer» B. 18.29 kN | |
| 53. |
On curved surface, the vertical component of hydrostatic force on a submerged curved surface is equal to the |
| A. | Volume of the liquid directly above the submerged surface. |
| B. | Hydrostatic force on the projected plane on the vertical plane. |
| C. | Hydrostatic force on the projected plane on the horizontal plane. |
| D. | Weight of the liquid directly above the submerged surface. |
| Answer» E. | |
| 54. |
A large vessel containing gas of density ρ under pressure releases a jet of the gas at velocity V from an ideal orifice of area A on its side. The reaction force on the vessel is: |
| A. | ρAV |
| B. | 2ρV/A |
| C. | ρAV2 |
| D. | ρAV2/(2g) |
| Answer» D. ρAV2/(2g) | |
| 55. |
A square gate, 1.5 m × 1.5 m, on one of the vertical sides of a fully filled water tank, has one side on the free water surface. It is hinged on the lower horizontal side and is held in position by a force applied on the vertical central line at depth of 0.75 m below the free surface. The right magnitude of this force is |
| A. | 500 × 9.81 N |
| B. | 600 × 9.81 N |
| C. | 750 × 9.81 N |
| D. | 1128 × 9.81 N |
| Answer» E. | |
| 56. |
Determine the total pressure on a circular plate of diameter 1.5 m which is placed vertically in water in such a way that the centre of plate is 3 m below the surface of water |
| A. | 52002.81 N |
| B. | 520.028 N |
| C. | 52.002 N |
| D. | 5200.281 N |
| Answer» B. 520.028 N | |
| 57. |
Hydraulic press is a device used ________. |
| A. | To store pressure energy, which may be applied to any machine later on |
| B. | To increase the intensity of pressure of water by measure of energy available from a large quantity of water at a low pressure |
| C. | To lift larger load by the application of a comparatively much smaller force |
| D. | None of these |
| Answer» D. None of these | |
| 58. |
A circular plate of 3 m diameter is immersed vertically with its centroid at a depth of 20 m below water. Another similar plate is lying horizontally at a depth of 20 m. The total force on the horizontal plate will be: |
| A. | More than the force on the vertical plate |
| B. | Less than the force on the vertical plate |
| C. | Same as on the force on the vertical plate |
| D. | None of these |
| Answer» D. None of these | |
| 59. |
An inclined plate 2 m long and 1 m wide lies with its length inclined at 45° to the surface of water and the nearest edge 1 m below it. If the specific weight of water is 1000 kg/m3, then the total pressure force on the plate (in kg) is approximately |
| A. | 2150 |
| B. | 2510 |
| C. | 3220 |
| D. | 3420 |
| Answer» E. | |
| 60. |
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance_______from the liquid surface. |
| A. | H/3 |
| B. | H/2 |
| C. | 2H/3 |
| D. | 3H/4 |
| Answer» D. 3H/4 | |
| 61. |
Consider a frictionless, massless and leak-proof plug blocking a rectangular hole of dimensions 2R × L at the bottom of an open tank as shown in the figure. The head of the plug has the shape of a semi-cylinder of radius R. The tank is filled with a liquid of density ρ up to the tip of the plug. The gravitational acceleration is g. Neglect the effect of the atmospheric pressure.The force F required to hold the plug in its position is |
| A. | \(2\rho {R^2}gL\left( {1 - \frac{\pi }{4}} \right)\) |
| B. | \(2\rho {R^2}gL\left( {1 + \frac{\pi }{4}} \right)\) |
| C. | πR2ρgL |
| D. | \(\frac{\pi }{2}\rho {R^2}gL\) |
| Answer» B. \(2\rho {R^2}gL\left( {1 + \frac{\pi }{4}} \right)\) | |
| 62. |
Find the pressure intensity at the depth of 50m below the free water surface. Take specific weight of water equal to 9.81 KN/m3. |
| A. | 390.50 KN/m2 |
| B. | 490.50 KN/m2 |
| C. | 550.50 KN/m2 |
| D. | 450.50 KN/m2 |
| Answer» C. 550.50 KN/m2 | |
| 63. |
A circular opening of 'd' m diameter in a vertical side of tank is closed by disc of 'd' m diameter. Calculate the force on disc if head of water above horizontal diameter is 4 m : |
| A. | \(\rho g\frac{\pi }{4}{d^2}\;\) |
| B. | \(3\rho g\frac{\pi }{4}{d^2}\;\) |
| C. | 2ρgπd2 |
| D. | ρgπd2 |
| Answer» E. | |
| 64. |
An oil of specific gravity 0.9 contained in a vessel. At a point the height of oil is 40 m and for the density of water = 1000 kg/m3, the corresponding height of water at the point will be |
| A. | 28 m |
| B. | 32 m |
| C. | 36 m |
| D. | 40 m |
| Answer» D. 40 m | |
| 65. |
Centre of pressure on an inclined plane is ________. |
| A. | At the centroid |
| B. | Above the centroid |
| C. | Below the centroid |
| D. | At metacentre |
| Answer» D. At metacentre | |
| 66. |
'A fluid is at rest' means that |
| A. | it has zero normal stress and non-zero shear stress |
| B. | it has non-zero normal stress and zero shear stress |
| C. | it has non-zero normal stress and shear stress |
| D. | it has zero normal stress and zero shear stress |
| Answer» C. it has non-zero normal stress and shear stress | |
| 67. |
Atmospheric pressure at ground level is approximately: |
| A. | 1 N/m2 |
| B. | 1 N |
| C. | 1 dyne/m2 |
| D. | 1 kgf/cm2 |
| Answer» E. | |
| 68. |
A square plane surface is 4 m wide and 4 m deep. It lies in vertical plane in water and its upper edge is horizontal and coincides with water surface. Estimate the total pressure on the plane surface. |
| A. | 500 kN |
| B. | 214 kN |
| C. | 200 kN |
| D. | 314 kN |
| Answer» E. | |
| 69. |
A tank of length, breadth and height in the ratio of 2 : 1 : 2 is full of water. The ratio of total hydrostatic force at the bottom to any larger vertical surface is |
| A. | 2.0 |
| B. | 1.5 |
| C. | 1.0 |
| D. | 0.5 |
| Answer» D. 0.5 | |
| 70. |
Pull on both ends of an object is termed as |
| A. | Contact force |
| B. | Tension |
| C. | Friction |
| D. | Weight |
| Answer» C. Friction | |
| 71. |
Example of a scalar quantity is |
| A. | 30 N |
| B. | 10 m s-2 |
| C. | 2 kg |
| D. | 50 km North |
| Answer» D. 50 km North | |
| 72. |
Example of a vector quantity is |
| A. | 50 km |
| B. | 20 m³ |
| C. | 12.5 Joules |
| D. | 8 m s-2 |
| Answer» E. | |
| 73. |
On earth object weighs 57 N and on moon it weighs 9.12 N. Its mass is |
| A. | 35.6 N |
| B. | 5.7 N |
| C. | 0.912 N |
| D. | 7.52 N |
| Answer» C. 0.912 N | |
| 74. |
Force is a |
| A. | Scalar quantity |
| B. | Vector quantity |
| C. | Base quantity |
| D. | Derived quantity |
| Answer» C. Base quantity | |
| 75. |
A truck pulls a car with a force of 50 N with acceleration of 5 m s-2. mass of car would be |
| A. | 45 kg |
| B. | 10 kg |
| C. | 250 kg |
| D. | 55 kg |
| Answer» C. 250 kg | |
| 76. |
Two forces of magnitude 5 N and 10 N act on a wooden block of mass 2 kg. If 5 N force acts towards right and 10 N force acts towards left, which of following statements is correct? |
| A. | Resultant force is 15 N towards the left |
| B. | Resultant force is 15 N towards the right |
| C. | Resultant force is 5 N towards the right |
| D. | Resultant force is 5N towards the left |
| Answer» E. | |
| 77. |
If acceleration or deceleration is zero, force acting on it are |
| A. | balanced or add up to zero |
| B. | unbalanced |
| C. | balanced but would not add up to zero |
| D. | unbalanced and add up to zero |
| Answer» B. unbalanced | |
| 78. |
If an object of mass 20 kg accelerates at rate of 2 m s-2. force applied on object would be |
| A. | 18 N |
| B. | 22 N |
| C. | 10 N |
| D. | 20 N |
| Answer» E. | |
| 79. |
Time is a |
| A. | Scalar quantity |
| B. | Vector quantity |
| C. | Base quantity |
| D. | A and C both |
| Answer» E. | |
| 80. |
Energy is a |
| A. | Scalar quantity |
| B. | Vector quantity |
| C. | Base quantity |
| D. | Derived quantity |
| Answer» B. Vector quantity | |
| 81. |
If no force is applied to a moving object, it will stop due to |
| A. | gravity |
| B. | backward force |
| C. | Magnetic force |
| D. | Friction |
| Answer» E. | |
| 82. |
Reduction in efficiency of cars by 20% is a |
| A. | positive effect of friction |
| B. | negative effect of friction |
| C. | neutral effect |
| D. | combined effect (positive and negative both) |
| Answer» C. neutral effect | |
| 83. |
If an apple is hanging on a tree, downward force would be weight and upward force would be |
| A. | Friction |
| B. | Weight |
| C. | Tension |
| D. | resistance |
| Answer» D. resistance | |
| 84. |
Power is a |
| A. | Scalar quantity |
| B. | Vector quantity |
| C. | Base quantity |
| D. | Derived quantity |
| Answer» B. Vector quantity | |
| 85. |
A box of candies weighs 40 N. If acceleration due to gravity = 10 m s-2, mass of this box equals |
| A. | 0.4 kg |
| B. | 4 kg |
| C. | 40 kg |
| D. | None of the above |
| Answer» C. 40 kg | |
| 86. |
Velocity is a |
| A. | Scalar quantity |
| B. | Vector quantity |
| C. | Base quantity |
| D. | Derived quantity |
| Answer» C. Base quantity | |
| 87. |
Type of force that opposes motion in fluids (water and air) is termed as |
| A. | resistance |
| B. | Tension |
| C. | Weight |
| D. | Friction |
| Answer» B. Tension | |
| 88. |
Pull or push or movement of electrical charges is termed as |
| A. | Magnetic force |
| B. | Electrical force |
| C. | Tension |
| D. | Viscous force |
| Answer» C. Tension | |
| 89. |
Friction and resistance cause energy loss in form of |
| A. | Electrical energy |
| B. | Potential Energy |
| C. | Thermal energy |
| D. | Kinetic energy |
| Answer» D. Kinetic energy | |
| 90. |
Scalar quantity in four of following is |
| A. | acceleration |
| B. | velocity |
| C. | force |
| D. | energy |
| Answer» E. | |
| 91. |
If two forces of 3 N acting on an object in opposite direction. resultant force will be |
| A. | 6 N |
| B. | 3 N |
| C. | 9 N |
| D. | Zero |
| Answer» E. | |
| 92. |
If an object is stationary which force is still acting on it? |
| A. | Friction |
| B. | Tension |
| C. | Weight |
| D. | resistance |
| Answer» D. resistance | |
| 93. |
If an object flies into space, its |
| A. | mass and weight both would remain same |
| B. | mass would change but weight would remain same |
| C. | mass would remain same but weight would change |
| D. | mass and weight both would change |
| Answer» D. mass and weight both would change | |
| 94. |
If two forces of 10 N and 5 N are acting on an object in a same direction, what will be total force acting on object? |
| A. | 10 N |
| B. | 15 N |
| C. | 50 N |
| D. | 5 N |
| Answer» C. 50 N | |
| 95. |
An object weighs 24 N on moon, its mass would be |
| A. | 15 kg |
| B. | 16 kg |
| C. | 23.4 kg |
| D. | 2.4 kg |
| Answer» B. 16 kg | |
| 96. |
If a car is accelerating at a rate of 20 m s-2 with a force of 10000 N, its mass is |
| A. | 200 kg |
| B. | 500 kg |
| C. | 200000 kg |
| D. | 9980 kg |
| Answer» C. 200000 kg | |
| 97. |
A box full of bricks weighs 128 N on moon and has a mass of 80 kg. gravitational pull of moon is |
| A. | 40 m s-2 |
| B. | 1.28 m s-2 |
| C. | 50 m s-2 |
| D. | 1.6 m s-2 |
| Answer» E. | |
| 98. |
A wheelbarrow of mass 75 kg accelerates from rest and reaches speed of 10 m s-2 in 5 seconds. Its force is |
| A. | 150 N |
| B. | 375 N |
| C. | 750 N |
| D. | 3750 N |
| Answer» B. 375 N | |
| 99. |
A wooden trolley of mass 20 kg accelerates at 2 m s-2, if force due to engine is 50 N, friction force is equal to |
| A. | 1 N |
| B. | 10N |
| C. | -10 N |
| D. | None of the above |
| Answer» C. -10 N | |
| 100. |
Density is a |
| A. | Scalar quantity |
| B. | Vector quantity |
| C. | Base quantity |
| D. | Derived quantity |
| Answer» B. Vector quantity | |