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MCQOPTIONS
This section includes 5814 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
When a body is totally or partially immersed in a fluid, it is buoyed up by a force equal to |
| A. | weight of the body |
| B. | weight of the fluid displaced by the body |
| C. | weight of the body and fluild displaced by the body |
| D. | difference of weights of the fluid displaced and that of the body |
| E. | none of these. |
| Answer» C. weight of the body and fluild displaced by the body | |
| 452. |
If D is the diameter of a pipe of length L and f is the coefficient of friction of pipe then diameter of the nozzle d is |
| A. | <img src="/_files/images/civil-engineering/hydraulics/162-7.278-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/162-7.278-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/162-7.278-3.png"> |
| D. | none of these. |
| Answer» B. <img src="/_files/images/civil-engineering/hydraulics/162-7.278-2.png"> | |
| 453. |
While applying the Bernoulli's equation = total head, the work any section done on the flow system, if any |
| A. | is added on the right side of the equation |
| B. | is added on the left side of the equation |
| C. | is ignored |
| D. | none of these. |
| Answer» C. is ignored | |
| 454. |
A short tube mouthpiece will not run full at its outlet if the head under which the orifice works, is |
| A. | less than 12.2 m of the water |
| B. | more than 12.2 m of the water |
| C. | equal of 12.2 m of water |
| D. | none of these. |
| Answer» C. equal of 12.2 m of water | |
| 455. |
Hydrostatic pressure on a dam depends upon its |
| A. | length |
| B. | depth |
| C. | shape |
| D. | material |
| E. | both (b) and (c). |
| Answer» F. | |
| 456. |
A cylinder 3 m in diameter and 4 m long retains water one side as shown in the below figure. If the weight of the cylinder is 2000 kgf, the horizontal reaction at B is |
| A. | 10,000 kgf |
| B. | 15,000 kgf |
| C. | 20,000 kgf |
| D. | 18,000 kgf. |
| Answer» E. | |
| 457. |
The momentum correction factor ( ) for the viscous flow through a circular pipe is |
| A. | 1.25 |
| B. | 1.33 |
| C. | 1.50 |
| D. | 1.66 |
| E. | 2.00 |
| Answer» C. 1.50 | |
| 458. |
Inside pressure in a hollow soap bubble in the air is : (where d is the diameter of the bubble) |
| A. | <img src="/_files/images/civil-engineering/hydraulics/159-7.233-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/159-7.233-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/159-7.233-3.png"> |
| D. | <img src="/_files/images/civil-engineering/hydraulics/159-7.233-4.png"> |
| Answer» E. | |
| 459. |
A piezometer opening in pipes measures |
| A. | velocity head |
| B. | static pressure |
| C. | total pressure |
| D. | negative static pressure. |
| Answer» C. total pressure | |
| 460. |
An independent mass of a fluid does not posses |
| A. | elevation energy |
| B. | kinetic energy |
| C. | pressure energy |
| D. | none of these. |
| Answer» D. none of these. | |
| 461. |
For filling cracks in masonry structures, the type of bitumen used, is |
| A. | cut-back bitumen |
| B. | bitumen-emulsion |
| C. | blown bitumen |
| D. | plastic bitumen. |
| Answer» E. | |
| 462. |
The most familiar form of Bernoulli's equation, is |
| A. | <img src="/_files/images/civil-engineering/hydraulics/148-7.89-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/148-7.89-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/148-7.89-3.png"> |
| D. | = constant head |
| E. | none of these. |
| Answer» D. = constant head | |
| 463. |
Plastic |
| A. | is an organic substance |
| B. | consists of natural or synthetic binders |
| C. | finished products are rigid and stable at normal temperature |
| D. | is capable of flow when necessary heat and pressure are applied |
| E. | All the above. |
| Answer» F. | |
| 464. |
The diameter (d) of a nozzle fixed at the end of a pipe (diameter D, length L) for maximum energy, is |
| A. | <img src="/_files/images/civil-engineering/hydraulics/154-7.176-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/154-7.176-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/154-7.176-3.png"> |
| D. | <img src="/_files/images/civil-engineering/hydraulics/154-7.176-4.png"> |
| Answer» D. <img src="/_files/images/civil-engineering/hydraulics/154-7.176-4.png"> | |
| 465. |
When two layers of a fluid separated by dy move over the other with a difference of velocity dv, causes a shearing stress , where is known as |
| A. | coefficient of viscosity |
| B. | absolute viscosity |
| C. | dynamic viscosity |
| D. | viscosity |
| E. | all the above. |
| Answer» F. | |
| 466. |
Highest dam in India, is |
| A. | Bhakra dam |
| B. | Hirakund dam |
| C. | Nagarjuna Sagar dam |
| D. | Iddiki dam. |
| Answer» B. Hirakund dam | |
| 467. |
Vanadium steel is generally used for |
| A. | railway switches and crossing |
| B. | bearing balls |
| C. | magnets |
| D. | axles and springs. |
| Answer» E. | |
| 468. |
The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as |
| A. | Cementation process |
| B. | Crucible process |
| C. | Bessemer process |
| D. | Open hearth process. |
| Answer» C. Bessemer process | |
| 469. |
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 |
| A. | water hammer |
| B. | hydraulic jump |
| C. | critical discharge |
| D. | none of these. |
| Answer» C. critical discharge | |
| 470. |
In a circular pipe of length L and diameter d, a viscous liquid is flowing with a velocity v. The loss in head, is |
| A. | <img src="/_files/images/civil-engineering/hydraulics/150-7.113-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/150-7.113-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/150-7.113-4.png"> |
| D. | <img src="/_files/images/civil-engineering/hydraulics/150-7.113-3.png"> |
| E. | none of these. |
| Answer» B. <img src="/_files/images/civil-engineering/hydraulics/150-7.113-2.png"> | |
| 471. |
Reynold number is the ratio of initial force and |
| A. | viscosity |
| B. | elasticity |
| C. | gravitational force |
| D. | surface tension. |
| Answer» B. elasticity | |
| 472. |
If the total head of the nozzle of a pipe is 37.5 m and discharge is 1 cumec, the power generated is |
| A. | 400 H.P. |
| B. | 450 H.P. |
| C. | 500 H.P. |
| D. | 550 H.P. |
| Answer» D. 550 H.P. | |
| 473. |
Maximum efficiency of transmission of power through a pipe, is |
| A. | 25% |
| B. | 33.3% |
| C. | 50% |
| D. | 66.67%. |
| Answer» E. | |
| 474. |
An ideal flow of a liquid obeys |
| A. | Continuity equation |
| B. | Newton's law of viscosity |
| C. | Newton's second law of motion |
| D. | dynamic viscosity law, |
| Answer» B. Newton's law of viscosity | |
| 475. |
The property of steam function is : |
| A. | is constant everwhere on any stream line |
| B. | the flow around any path in the fluid is zero for continuous flow |
| C. | the rate of change of with distance in an arbitrary direction, is proportional to the component of velocity normal to that direction |
| D. | the velocity vector may be found by differentiating the stream function |
| E. | all the above. |
| Answer» F. | |
| 476. |
In a combined footing if shear stress exceeds 5 kg/cm2, the nominal stirrups provided are: |
| A. | 6 legged |
| B. | 8 legged |
| C. | 10 legged |
| D. | 12 legged |
| E. | none of these. |
| Answer» E. none of these. | |
| 477. |
The maximum vacuum created at the summit of a syphon is |
| A. | 2.7 m of water |
| B. | 7.4 m of water |
| C. | 5.5 m of water |
| D. | none. |
| Answer» C. 5.5 m of water | |
| 478. |
Post tensioning system |
| A. | was widely used in earlier days |
| B. | is not economical and hence not generally used |
| C. | is economical for large spans and is adopted now a days |
| D. | none of these. |
| Answer» D. none of these. | |
| 479. |
The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of |
| A. | reverse curve |
| B. | next curve of the same order |
| C. | reverse curve plus the width of the river |
| D. | none of these. |
| Answer» C. reverse curve plus the width of the river | |
| 480. |
If B and d are the bed width and depth of a channel in metres, the combined losses due to evaporation and seepage in cumecs per kilometre length of the channel, is |
| A. | <img src="/_files/images/civil-engineering/irrigation/15-15-31-1.png"> |
| B. | <img src="/_files/images/civil-engineering/irrigation/15-15-31-2.png"> |
| C. | <img src="/_files/images/civil-engineering/irrigation/15-15-31-3.png"> |
| D. | <img src="/_files/images/civil-engineering/irrigation/15-15-31-4.png"> |
| Answer» E. | |
| 481. |
The minimum number of main steel bars provided in R.C.C. |
| A. | rectangular columns is 4 |
| B. | circular columns is 6 |
| C. | octagonal columns is 8 |
| D. | all the above. |
| Answer» E. | |
| 482. |
The maximum area of tension reinforcement in beams shall not exceed |
| A. | 0.15% |
| B. | 1.5% |
| C. | 4% |
| D. | 1% |
| Answer» D. 1% | |
| 483. |
The maximum length and pavement strength of the runway is that of |
| A. | A 1 |
| B. | B 2 |
| C. | B 3 |
| D. | G 7 |
| Answer» B. B 2 | |
| 484. |
For the taxiways, the following statement is true |
| A. | The maximum longitudinal grade is 3% |
| B. | The permissible rate of change of grade is 1% |
| C. | The permissible transverse grade is 1.5% |
| D. | All the above. |
| Answer» E. | |
| 485. |
According to the International Civil Aviation Organisation (I.C.A.O.), the runway lengths of aerodromes, have been coded by |
| A. | Seven English alphabets |
| B. | Last Seven English alphabets |
| C. | First Seven English alphabets |
| D. | First seven natural numbers. |
| Answer» D. First seven natural numbers. | |
| 486. |
If the width of the approach area near the runway end is 150 m, the width of the approach area at a distance of 3 kilometres from runway end will be |
| A. | 1500 m |
| B. | 1200 m |
| C. | 1000 m |
| D. | 800 m |
| Answer» C. 1000 m | |
| 487. |
The coordinates of the ends of a runway are (5000, 5000) and (8000, 7000). The co-ordinates of an other runway are (4600, 5100) and (7000, 5300). The co-ordinates of the A.R.P. are |
| A. | (6500, 6000) |
| B. | (5800, 5200) |
| C. | (61500, 5600) |
| D. | (8000, 7000) |
| Answer» D. (8000, 7000) | |
| 488. |
International Civil Aviation Organisation (I.C.A.O.) was set up at Montreal (Canada), in |
| A. | 1929 |
| B. | 1939 |
| C. | 1947 |
| D. | 1950 |
| Answer» D. 1950 | |
| 489. |
The air is blowing at a speed of 75 knots in the direction of the aircraft flying at a ground speed of 775 knots. The air speed of the aircraft, is |
| A. | 775 knots |
| B. | 75 knots |
| C. | 850 knots |
| D. | 675 knots |
| Answer» E. | |
| 490. |
A gradient of + 0.08% is followed by a gradient of - 0.07%. If the permissible rate of change of grade is 0.003 per 30 metres, the length of the transition curve, is |
| A. | 150 m |
| B. | 140 m |
| C. | 160 m |
| D. | 175 m |
| Answer» B. 140 m | |
| 491. |
The distance between main gears is 10 m, and the distance of nose gear from centre of main gears is 30 m. If the angle of turning is 60 , the distance of centre of rotation from the nearer main gear, is |
| A. | 12.30 m |
| B. | 11.30 m |
| C. | 10.30 m |
| D. | 9.30 m |
| Answer» B. 11.30 m | |
| 492. |
To cope up high temperature of 196 C, the taxi ways and aprons are constructed with |
| A. | asphaltic concrete |
| B. | rubberised tar concrete |
| C. | plain concrete |
| D. | epoxy asphalt concrete |
| E. | all the above. |
| Answer» F. | |
| 493. |
Pick up the correct abbreviation from the following: |
| A. | I.L.S. (instrument landing system) |
| B. | V.H.F, (very high frequency) |
| C. | L.O.M. (low powered outer marker) |
| D. | L.M.M. (low powered middle marker) |
| E. | All the above |
| Answer» F. | |
| 494. |
Beaufort scale is used to determine |
| A. | strength of winds |
| B. | direction of winds |
| C. | height of air-crafts |
| D. | none of these. |
| Answer» B. direction of winds | |
| 495. |
The runway orientation is made so that landing and take off are |
| A. | against the wind direction |
| B. | along the wind direction |
| C. | perpendicular to wind direction |
| D. | none of these. |
| Answer» B. along the wind direction | |
| 496. |
An aircraft is flying in an atmosphere of 30 C with a speed of 1260 km ph. Its speed is known as |
| A. | subsonic |
| B. | sonic |
| C. | super-sonic |
| D. | Mach. |
| Answer» C. super-sonic | |
| 497. |
The meterological condition which influences the size and location of an air port is |
| A. | atmosphere pressure |
| B. | air density |
| C. | reduced level |
| D. | wind direction |
| E. | all the above. |
| Answer» F. | |
| 498. |
Conical surface of the approach area rises outwards |
| A. | 1 in 10 |
| B. | 1 in 15 |
| C. | 1 in 20 |
| D. | 1 in 25 |
| Answer» D. 1 in 25 | |
| 499. |
The reduced level of the proposed site of an air port is 2500 m above M.S.L. If the recommended length by I.C.A.O. for the runway at sea level is 2500 m, the required length of the runway is |
| A. | 2500 m |
| B. | 3725 m |
| C. | 3000 m |
| D. | 3250 m |
| Answer» C. 3000 m | |
| 500. |
For Class A Air port the difference of reduced levels of higher and lower edges of the conical surface, is |
| A. | 25 m |
| B. | 50 m |
| C. | 75 m |
| D. | 100 m |
| Answer» E. | |