McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 501. |
Barometer is used to measure |
| A. | velocity of liquid |
| B. | atmospheric pressure |
| C. | pressure in pipes and channels |
| D. | difference of pressure between two points in a pipe |
| Answer» B. atmospheric pressure | |
| 502. |
An ideal fluid is frictionless and incompressible. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 503. |
The vacuum pressure is always the negattive gauge pressure. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 504. |
The Cippoletti weir is a |
| A. | rectangular |
| B. | triangular |
| C. | trapezoidal |
| D. | circular |
| Answer» C. trapezoidal | |
| 505. |
The density of a liquid in kg / m3 is numerically equal to its specific gravity. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 506. |
The specific gravity of water is taken as |
| A. | 0.001 |
| B. | 0.01 |
| C. | 0.1 |
| D. | 1 |
| Answer» D. 1 | |
| 507. |
The frictional resistance of a pipe varies approximately with |
| A. | pressure |
| B. | velocity |
| C. | square of velocity |
| D. | cube of velocity |
| Answer» C. square of velocity | |
| 508. |
The intensity of pressure at any point, in a liquid, is |
| A. | equal |
| B. | directly proportional |
| C. | inversely proportional |
| Answer» B. directly proportional | |
| 509. |
A fluid which obeys the Newton's law of viscosity is termed as |
| A. | real fluid |
| B. | ideal fluid |
| C. | newtonian fluid |
| D. | non-newtonian fluid |
| Answer» C. newtonian fluid | |
| 510. |
A flow in which the quantity of liquid flowing per second is constant, is called |
| A. | steady |
| B. | stream line |
| C. | turbulent |
| D. | unsteady |
| Answer» A. steady | |
| 511. |
The atmospheric pressure at sea level is |
| A. | 103 kN / m3 |
| B. | 10.3 m of water |
| C. | 760 mm of mercury |
| D. | all of the above |
| Answer» D. all of the above | |
| 512. |
Viscous force is the |
| A. | sum |
| B. | different |
| C. | product |
| D. | ratio |
| Answer» C. product | |
| 513. |
For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called |
| A. | continuity equation |
| B. | Bernoulli's equation |
| C. | Pascal's law |
| D. | Archimede's principle |
| Answer» B. Bernoulli's equation | |
| 514. |
The pressure of fluid due to hammer blow is |
| A. | directly proportional to density of fluid |
| B. | inversely proportional to density of fluid |
| C. | directly proportional to (density)1/2 of fluid |
| D. | inversely proportional to (density)1/2 of fluid |
| Answer» C. directly proportional to (density)1/2 of fluid | |
| 515. |
Surface tension force is the product of surface tension per unit length and cross-sectional area of flow. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 516. |
The mercuty does not wet the glass. This is due to the property of the liquid known as |
| A. | cohesion |
| B. | adhesion |
| C. | viscosity |
| D. | surface tension |
| Answer» D. surface tension | |
| 517. |
In a convergent mouthpiece, the absolute pressure head at vena contracta is the same as the of the atmosphere. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 518. |
The value of coefficient of velocity for a sharp edged orifice |
| A. | decrease |
| B. | increases |
| Answer» B. increases | |
| 519. |
The specific weight is also known as weight density. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 520. |
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to over-come the viscous resistance will be |
| A. | double |
| B. | four times |
| C. | eight times |
| D. | sixteen times |
| Answer» A. double | |
| 521. |
To product of mass and accelaration of flowing liquid is called |
| A. | inertia force |
| B. | viscous force |
| C. | gravity force |
| D. | pressure force |
| Answer» A. inertia force | |
| 522. |
The maximum efficiency of transmission through a pipe is |
| A. | 50% |
| B. | 56.70% |
| C. | 66.67% |
| D. | 76.66% |
| Answer» C. 66.67% | |
| 523. |
Euler's number is the ratio of |
| A. | inertia |
| B. | gravity |
| C. | viscous |
| Answer» A. inertia | |
| 524. |
To to of the weir over which the water flows in known as |
| A. | sill or crest |
| B. | nappe or vein |
| C. | oriffice |
| D. | none of these |
| Answer» A. sill or crest | |
| 525. |
A weir is usually made of masonry or concrete. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 526. |
The pressure of a liquid measured with the help of a piezometer tube is |
| A. | vacuum pressure |
| B. | gauge pressure |
| C. | absolute pressure |
| D. | atmospheric pressure |
| Answer» B. gauge pressure | |
| 527. |
The pressure of liquid at throat in a venturimeter is |
| A. | higher |
| B. | lower |
| Answer» B. lower | |
| 528. |
The ratio of velocity of fluid in an undisturbed stream to the velocity of sound wave is known as Mach number. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 529. |
In a footstep bearing, if the radius 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» D. sixteen times | |
| 530. |
A flow through an expanding tube at increasing rate is called unsteady non-uniform flow. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 531. |
An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be |
| A. | equal to |
| B. | directly proportional |
| C. | inversely proportional |
| Answer» B. directly proportional | |
| 532. |
When the pipes are in series, the total head loss is equal to the sum of the head loss in each pipe. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 533. |
The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called |
| A. | density of liquid |
| B. | specific gravity of liquid |
| C. | compressibility of liquid |
| D. | surface tension of liquid |
| Answer» B. specific gravity of liquid | |
| 534. |
In an external mouthpiece, the absolute pressure head at vena contracta is |
| A. | less than |
| B. | more than |
| Answer» A. less than | |
| 535. |
The unit of kinematic viscosity in S. I. units is |
| A. | N-m/s |
| B. | N-s/m2 |
| C. | m2/s |
| D. | N - m |
| Answer» C. m2/s | |
| 536. |
Re-entrant or Borda's mouthpiece is an |
| A. | internal |
| B. | external |
| Answer» A. internal | |
| 537. |
The power transmitted through the nozzle is maximum when the head lost due to friction in the pipe is |
| A. | one-half |
| B. | one-third |
| C. | two-third |
| Answer» B. one-third | |
| 538. |
The coefficient of venturiflume, generally lies between |
| A. | 0.3 to 0.45 |
| B. | 0.50 to 0.75 |
| C. | 0.75 to 0.95 |
| D. | 0.95 to 1.0 |
| Answer» D. 0.95 to 1.0 | |
| 539. |
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 | |
| 540. |
In a venturimeter, the velocity of liquid at throat is |
| A. | higher |
| B. | lower |
| Answer» A. higher | |
| 541. |
When a body is placed over a liquid, it will float if |
| A. | gravitational force is equal to the upthrust of the liquid |
| B. | gravitational force is less than the upthrust of the liquid |
| C. | gravitational force is more than the upthrust of the liquid |
| D. | none of the above |
| Answer» B. gravitational force is less than the upthrust of the liquid | |
| 542. |
The hydraulic gradient line may be above or below the centre line of the pipe. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 543. |
The property of a liquid which enables into resist tensile stress is called its surface tension. |
| A. | Agree |
| B. | Disagree |
| Answer» A. Agree | |
| 544. |
In a sharp-crested weir, the thickness of the weir is kept less than half of the height of water above the crest of the weir. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 545. |
The viscosity of a liquid |
| A. | effects |
| B. | does not effect |
| Answer» A. effects | |
| 546. |
A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is |
| A. | 2.89 kM |
| B. | 8.29 kN |
| C. | 9.28 kN |
| D. | 28.9 kN |
| Answer» B. 8.29 kN | |
| 547. |
A flow is called sonic, if the Mach number is unity. |
| A. | Agree |
| B. | Disagree |
| Answer» A. Agree | |
| 548. |
An internal mouthpiece is said to be running free if the length of the mouthpiece is |
| A. | less than twice |
| B. | more than twice |
| C. | less than three times |
| D. | more than three times |
| Answer» C. less than three times | |
| 549. |
The hydraulic mean depth or the hydraulic radius is the ratio of |
| A. | area of flow and wetted perimeter |
| B. | wetted perimeter and diameter of pipe |
| C. | velocity of flow and area of flow |
| D. | none of these |
| Answer» A. area of flow and wetted perimeter | |
| 550. |
When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure |
| A. | less than |
| B. | more than |
| Answer» A. less than | |
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