MCQOPTIONS
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MCQOPTIONS
This section includes 111 Mcqs, each offering curated multiple-choice questions to sharpen your UPSEE knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Prandtl Pitot tube was used to measure the velocity of a fluid of specific gravity S1. The differential manometer, with a fluid of specific gravity S2 connected to the Pitot tube recorded a level difference as ‘h’ as shown in figure below. The velocity V is given by the expression |
| A. | \(\sqrt {2gh\left( {\frac{{{S_1}}}{{{S_2}}} - 1} \right)} \) |
| B. | \(\sqrt {2gh\left( {\frac{{{S_2}}}{{{S_1}}} - 1} \right)} \) |
| C. | \(\sqrt {2gh\left( {{S_1} - {S_2}} \right)} \) |
| D. | \(\sqrt {2gh\left( {{S_2} - {S_1}} \right)} \) |
| Answer» C. \(\sqrt {2gh\left( {{S_1} - {S_2}} \right)} \) | |
| 52. |
A surveyor measured the distance between two points on the plan drawn to a scale 1 cm = 40 m and the result was 468 m. Later however, he discovered that he had used a scale of 1 cm = 20 m. Find the true distance between the two points. |
| A. | 1023 m |
| B. | 451 m |
| C. | 220 m |
| D. | 936 m |
| E. | 810 m |
| Answer» E. 810 m | |
| 53. |
If the 20 m chain is used to set out a 4° curve, then the radius of the curve is ___________. |
| A. | 276.5 m |
| B. | 286.5 m |
| C. | 278.5 m |
| D. | 284.5 m |
| Answer» C. 278.5 m | |
| 54. |
A ______ is a device used for measuring the rate of flow of a fluid flowing through a pipe. |
| A. | barometer |
| B. | venturimeter |
| C. | manometer |
| D. | hygrometer |
| Answer» C. manometer | |
| 55. |
In a bucket of water, Piezometric head: |
| A. | increases in horizontal direction |
| B. | increases linearly in vertical direction |
| C. | decreases in horizontal direction |
| D. | remains constant at every point |
| Answer» C. decreases in horizontal direction | |
| 56. |
______ is useful for measuring the flow of a conducting fluid. |
| A. | Rotameter |
| B. | Electro-magnetic flow meter |
| C. | Vane meter |
| D. | Orifice meter |
| Answer» C. Vane meter | |
| 57. |
Chain surveying is recommended when the area to be surveyed is: |
| A. | Small in extent with lot of vegetation |
| B. | Small in extent and on less undulating |
| C. | Small in extent and undulating |
| D. | Large in extent and undulating |
| Answer» C. Small in extent and undulating | |
| 58. |
In a pitot tube, velocity of a flowing fluid at any point in a pipe is given by: |
| A. | V = Cc√2gh |
| B. | V = √2 gh |
| C. | V = Cd√2 gh |
| D. | V = Cv√2 gh |
| Answer» E. | |
| 59. |
An area of 64 square kilometre is represented by 256 square centimetres on a map. The R. F. of the scale is |
| A. | 1/4 |
| B. | 1/50000 |
| C. | 1/2 |
| D. | 1/5000 |
| Answer» C. 1/2 | |
| 60. |
A nozzle meter is used to measure: |
| A. | Viscosity |
| B. | Flow rate |
| C. | Volume |
| D. | Velocity |
| Answer» C. Volume | |
| 61. |
A venturi meter is preferable to orifice meter because |
| A. | it is cheaper |
| B. | it is more convenient |
| C. | energy loss is less |
| D. | it is easy to assemble |
| Answer» D. it is easy to assemble | |
| 62. |
Pitot tube measures ______. |
| A. | dynamic pressure of a moving stream |
| B. | temperature of moving water |
| C. | pressure difference between two fluids |
| D. | gauge pressure |
| Answer» B. temperature of moving water | |
| 63. |
A fluid jet discharging from a 100 mm diameter orifice has a diameter of 80 mm at its vena contracta. The coefficient of contraction is |
| A. | 0.8 |
| B. | 1.25 |
| C. | 0.2 |
| D. | 0.64 |
| Answer» E. | |
| 64. |
Identify the positive displacement type of flow meter from the following. |
| A. | Constant area variable head |
| B. | Oval gear type |
| C. | Constant head variable area |
| D. | Variable area variable head |
| Answer» C. Constant head variable area | |
| 65. |
Pitot tubes are used to check: |
| A. | Measure gases |
| B. | Air velocity in ducts |
| C. | Mass calculation |
| D. | Surface temperatures |
| Answer» C. Mass calculation | |
| 66. |
10 divisions of Vernier scale are equal to 11 divisions of a main scale of each 0.1 mm. What is the least count of the Vernier scale? |
| A. | 0.009 |
| B. | 0.01 |
| C. | 0.1 |
| D. | 1.1 |
| Answer» C. 0.1 | |
| 67. |
During chaining along a straight line, the leader of the survey party has three arrows and while follower has five arrows, the distance of the follower from the starting point will be _________. |
| A. | Three chains |
| B. | Four chains |
| C. | Five chains |
| D. | None of these |
| Answer» D. None of these | |
| 68. |
A surveyor assumes P as difference in elevation between Points X and Y having slope S. What will be the expression to calculate slope correction? |
| A. | P2/2S |
| B. | P2/4S |
| C. | S2/2S |
| D. | P2/2S2 |
| Answer» B. P2/4S | |
| 69. |
Flow velocity at the throat of a converging-diverging nozzle is ______ when designed for maximum discharge. |
| A. | sonic |
| B. | hypersonic |
| C. | sub-sonic |
| D. | supersonic |
| Answer» B. hypersonic | |
| 70. |
Compensating errors in chaining are _______. |
| A. | Proportional to the length of the line |
| B. | Proportional to the square root of the length of the line |
| C. | Inversely proportional to the square root of the length of the line |
| D. | Inversely proportional to the length of the line |
| Answer» C. Inversely proportional to the square root of the length of the line | |
| 71. |
Figure shows the schematic for the measurement of velocity of air (density = 1.2 kg /m3 ) through a constant–area duct using a pitot tube and a water-tube manometer. The differential head of water (density = 1000 kg /m3) in the two columns of the manometer is 10mm. Take acceleration due to gravity as 9.8m/ s2 . The velocity of air in m/s is |
| A. | 6.4 |
| B. | 9 |
| C. | 12.8 |
| D. | 25.6 |
| Answer» D. 25.6 | |
| 72. |
A linen tape which is reinforced with copper or brass wires is termed as |
| A. | Invar tape |
| B. | Metalic tape |
| C. | Linen tape |
| D. | Steel tape |
| Answer» C. Linen tape | |
| 73. |
Gunter’s chain is also known as ___________. |
| A. | Band chain |
| B. | Engineer’s chain |
| C. | Surveyor’s chain |
| D. | Revenue chain |
| Answer» D. Revenue chain | |
| 74. |
____________ is a small opening of any cross section on the side or bottom of the tank on which fluid is flowing. |
| A. | Weir |
| B. | Notch |
| C. | Mouth piece |
| D. | Orifice |
| Answer» E. | |
| 75. |
Pitot tube is used for the measurement of |
| A. | Velocity |
| B. | Pressure |
| C. | Flow |
| D. | Viscosity |
| Answer» B. Pressure | |
| 76. |
A tank 1.5 m stands on a trolly and is full of water. It has an orifice of diameter 0.1 m at 0.3 m from the bottom of the tank. If the orifice is suddenly opened and coefficient of velocity is 0.60, then the propelling force on the trolley will be |
| A. | 69.37 N |
| B. | 66.51 N |
| C. | 63.79 N |
| D. | 65.39 N |
| Answer» C. 63.79 N | |
| 77. |
In any venturimeter carrying a liquid at sufficiently high discharges, cavitation conditions can occur at the throat. This occurs due to pressure at the throat reaching a critical value controlled |
| A. | viscosity of the fluid |
| B. | eddy viscosity of the flow |
| C. | Volumetric bulk modulus of the fluid |
| D. | surface tension of the fluid |
| E. | room temperature |
| Answer» E. room temperature | |
| 78. |
Invar tapes are made of an alloy of _________. |
| A. | Nickel and steel |
| B. | Copper and steel |
| C. | Tin and steel |
| D. | Aluminium and steel |
| Answer» B. Copper and steel | |
| 79. |
A fluid jet discharging from 150 mm diameter orifice has a diameter of 100 mm at its vena contracta. The coefficient of contraction is |
| A. | 0.44 |
| B. | 1.24 |
| C. | 0.24 |
| D. | 0.64 |
| Answer» B. 1.24 | |
| 80. |
Consider the following statements:A. Pitot tube is used for measuring velocity of flow in the pipe.B. Manometer is used for measuring fluid pressure in a pipe.C. Venturimeter is used for measuring discharge in a pipe.Which of the above statements are correct?Select the code for the correct answer from the options given below: |
| A. | A and B only |
| B. | B and C only |
| C. | A and C only |
| D. | A, B and C |
| Answer» E. | |
| 81. |
In the case of flow-through orifices, the coefficient of velocity at vena contract is. |
| A. | equal to zero |
| B. | equal to one |
| C. | greater than one |
| D. | less than one |
| Answer» E. | |
| 82. |
A tank containing water has two orifices of the same size at depths of 40 cm and 90 cm below the free surface of water. The ratio of discharge through these orifices is |
| A. | 1 : 1 |
| B. | 2 : 3 |
| C. | 4 : 9 |
| D. | 16 : 81 |
| Answer» C. 4 : 9 | |
| 83. |
A venturimeter is a device used for measuring the: |
| A. | pressure developed inside the pipe |
| B. | head loss in a piping system |
| C. | rate of flow of fluid flowing through a pipe |
| D. | efficiency of the pumping system |
| E. | friction loss in a pipe system |
| Answer» D. efficiency of the pumping system | |
| 84. |
Cylinder and piston type flow meters are of _____ type. |
| A. | variable head |
| B. | variable area |
| C. | variable area variable head |
| D. | positive displacement |
| Answer» E. | |
| 85. |
A venturimeter having a throat diameter of 0.1 m is used to estimate the flow rate of a horizontal pipe having a diameter of 0.2 m. For an observed pressure difference of 2 m of water head and coefficient of discharge equal to unity, assuming that the energy losses are negligible, the flow rate (in m3/s) through the pipe is approximately equal to |
| A. | 0.5 |
| B. | 0.15 |
| C. | 0.05 |
| D. | 0.015 |
| Answer» D. 0.015 | |
| 86. |
A 30 m metric chain is found to be 10 cm too short throughout a measurement. If the distance measured is recorded as 300 m, what is the actual distance? |
| A. | 300.1 m |
| B. | 301.0 m |
| C. | 299.0 m |
| D. | 310.0 m |
| Answer» D. 310.0 m | |
| 87. |
For a given discharge through an orifice meter, the magnitude of Coefficient of discharge lies between: _______. |
| A. | 0.51 - 0.65 |
| B. | 0.64 - 0.76 |
| C. | 0.76 - 0.85 |
| D. | 0.86 - 0.98 |
| Answer» C. 0.76 - 0.85 | |
| 88. |
At ______ point in a flow, the components of the velocity vector are identically zero. |
| A. | uniform |
| B. | stagnation |
| C. | unsteady |
| D. | steady |
| Answer» C. unsteady | |
| 89. |
If W is the weight of the chain, L is the span and P is the tension or pull, then the sag correction of chain line will be: |
| A. | \(\frac {W^2L^2}{24P}\) |
| B. | \(\frac {W^2L}{24P^2}\) |
| C. | \(\frac {W^2L}{24P}\) |
| D. | \(\frac {W^2L^2}{24P^2}\) |
| Answer» C. \(\frac {W^2L}{24P}\) | |
| 90. |
A liquid of specific gravity 0.68 is flowing through a venturimeter having inlet diameter 50 cm and throat diameter 30 cm. The liquid-mercury differential manometer shows a reading of 20 cm. The specific gravity of mercury is 13.6. Find the difference of the pressure head. |
| A. | 3.8 m of liquid |
| B. | 2 m of liquid |
| C. | 5 m of liquid |
| D. | 5.8 m of liquid |
| Answer» B. 2 m of liquid | |
| 91. |
If a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta then its coefficient of contraction will be |
| A. | 0.80 |
| B. | 0.90 |
| C. | 1.25 |
| D. | 0.64 |
| Answer» E. | |
| 92. |
In flow measurement, a Venturi meter is preferred over an orifice plate because ______. |
| A. | pressure drop is more |
| B. | it is cheaper |
| C. | energy or head loss is less |
| D. | space is limited |
| Answer» D. space is limited | |
| 93. |
Gunter’s chain is ______ m long. |
| A. | 21.12 |
| B. | 22.12 |
| C. | 20.12 |
| D. | 23.12 |
| Answer» D. 23.12 | |
| 94. |
Coefficient of contraction is the ratio of: |
| A. | actual velocity of jet at Vena contracta to the theoretical velocity. |
| B. | loss of head in the orifice to the head of water available at the exit of the orifice. |
| C. | actual discharge through an orifice to the theoretical discharge. |
| D. | area of jet at Vena contracta to the area of orifice. |
| Answer» E. | |
| 95. |
A constant-head water tank has, on one of its vertical sides two identical small orifices issuing two horizontal jets in the same vertical plane. The vertical distance between the centres of orifices is 1.5 m and the jet trajectories intersect at a point 0.5 m below the lower orifice. What is the approximate height of water level in the tank above the point of intersection trajectories? |
| A. | 1.0 m |
| B. | 2.5 m |
| C. | 0.5 m |
| D. | 2.0 m |
| Answer» C. 0.5 m | |
| 96. |
A horizontal Venturimeter with inlet diameter of 30 cm and throat diameter of 15 cm is used to measure the flow of water. The reading on a differential manometer connected to the inlet and the throat is 20 cm of mercury. If Cd = 0.98, the rate of flow is nearly |
| A. | 12.5 l/s |
| B. | 25 l/s |
| C. | 125 l/s |
| D. | 250 l/s |
| Answer» D. 250 l/s | |
| 97. |
A simple pitot tube measures the: |
| A. | Static pressure |
| B. | Dynamic pressure |
| C. | Total pressure |
| D. | Difference in total and dynamic pressure |
| Answer» D. Difference in total and dynamic pressure | |
| 98. |
A tank of uniform cross sectional cross area (A) containing liquid upto height (H) has an orifice of cross sectional areas (a) at its bottom. The time required to empty the tank completely will be |
| A. | \(\frac{{2A\sqrt {{H_1}} }}{{{C_d}a\sqrt {2g} }}\) |
| B. | \(\frac{{2A{H_1}}}{{{C_d}a\sqrt {2g} }}\) |
| C. | \(\frac{{2AH_1^{3/2}}}{{{C_d}a\sqrt {2g} }}\) |
| D. | \(\frac{{2AH_1^2}}{{{C_d}a\sqrt {2g} }}\) |
| Answer» B. \(\frac{{2A{H_1}}}{{{C_d}a\sqrt {2g} }}\) | |
| 99. |
In a chain surveying work of a traverse, it is necessary to apply the correction due to sag for the tape. The correction is: |
| A. | either negative or positive |
| B. | always positive |
| C. | dependent on the temperature conditions |
| D. | always negative |
| Answer» E. | |
| 100. |
Borda's mouthpeice is also known as ________. |
| A. | convergent |
| B. | cylicndircal |
| C. | divergent |
| D. | re-entrant |
| Answer» E. | |