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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.
| 3501. |
To measure very low pressure, we use |
| A. | barometers |
| B. | piezometers |
| C. | manometers |
| D. | differential manometers. |
| Answer» D. differential manometers. | |
| 3502. |
For a steel member of slenderness ratio 350, the allowable stress is 76 kg/cm2 if it is |
| A. | HTW grade of thickness exceeding 32 mm |
| B. | HT grade of thickness exceeding 45 mm |
| C. | HT grade of thickness not exceeding 45 mm |
| D. | All the above. |
| Answer» E. | |
| 3503. |
Effective sectional area of a compression member is : |
| A. | gross sectional area - area of rivet hole |
| B. | gross sectional ares + area of rivet hole |
| C. | gross sectional ares x area of rivet hole |
| D. | gross sectional ares + area of rivet hole. |
| Answer» B. gross sectional ares + area of rivet hole | |
| 3504. |
In a grillage column footing maximum bending moment M occurs at the centre of grillage beams. Its value is (where P, L and a are axial load, length of the beam and length of the column base respectively). |
| A. | <i>M = P(L - a)</i> |
| B. | <img src="/_files/images/civil-engineering/steel-structure-design/100-14-95-1.png"> |
| C. | <img src="/_files/images/civil-engineering/steel-structure-design/100-14-95-2.png"> |
| D. | <img src="/_files/images/civil-engineering/steel-structure-design/100-14-95-3.png"> |
| E. | <img src="/_files/images/civil-engineering/steel-structure-design/100-14-95-4.png"> |
| Answer» D. <img src="/_files/images/civil-engineering/steel-structure-design/100-14-95-3.png"> | |
| 3505. |
The pressure less than atmospheric , pressure, is known |
| A. | suction pressure |
| B. | vacuum pressure |
| C. | negative gauge pressure |
| D. | all the above. |
| Answer» E. | |
| 3506. |
A rise or fall of liquid in a glass tube of a very small diameter when dipped is |
| A. | directly proportional to the force per unit length of periphery |
| B. | direcly proportional to the sine of the angle of contact |
| C. | directly proportional to the specific weight of liquid |
| D. | inversely proportional to the diameter of the glass tube. |
| Answer» D. inversely proportional to the diameter of the glass tube. | |
| 3507. |
Which one of the following equation is applicable to unsteady flow in open channels : |
| A. | <img src="/_files/images/civil-engineering/hydraulics/163-7.286-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/163-7.286-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/163-7.286-3.png"> |
| D. | <img src="/_files/images/civil-engineering/hydraulics/163-7.286-4.png"> |
| Answer» E. | |
| 3508. |
The strength of ISA 125 = 75 x 10 mm used as a tie member with its longer leg connected at the ends by 27 mm diameter rivets, is |
| A. | 26,000 kg |
| B. | 26,025 kg |
| C. | 26,050 kg |
| D. | 26,075 kg |
| E. | 27,000 kg |
| Answer» E. 27,000 kg | |
| 3509. |
The stress in the wall of a thin cylinder subjected to internal pressure, is |
| A. | hoop compression |
| B. | shear |
| C. | torsional shear |
| D. | hoop tension. |
| Answer» E. | |
| 3510. |
With usual notations of the letters, the shear stress fs at any point of the cross-section is given by |
| A. | <img src="/_files/images/civil-engineering/steel-structure-design/103-14-129-1.png"> |
| B. | <img src="/_files/images/civil-engineering/steel-structure-design/103-14-129-2.png"> |
| C. | <img src="/_files/images/civil-engineering/steel-structure-design/103-14-129-3.png"> |
| D. | <img src="/_files/images/civil-engineering/steel-structure-design/103-14-129-4.png"> |
| Answer» B. <img src="/_files/images/civil-engineering/steel-structure-design/103-14-129-2.png"> | |
| 3511. |
In flowing liquids pitot tubes are used measure |
| A. | discharge |
| B. | pressure |
| C. | velocity |
| D. | depth. |
| Answer» D. depth. | |
| 3512. |
Capillary rise of water is |
| A. | directly proportional to surface tension |
| B. | inversely proportional to water density |
| C. | inversely proportional to diameter of the tube |
| D. | All of these. |
| Answer» E. | |
| 3513. |
An error of 1% in measuring the head of water over the crest of a rectangular weir, produces an error in the discharge which is equal to |
| A. | 1.25% |
| B. | 1.5% |
| C. | 1.75% |
| D. | 2.25% |
| Answer» C. 1.75% | |
| 3514. |
The ratio of the percentage error in the discharge and percentage error in the measurement of head, over rectangular notch, is |
| A. | 1/2 |
| B. | 2/3 |
| C. | 3/2 |
| D. | 3/4 |
| Answer» D. 3/4 | |
| 3515. |
An ideal fluid |
| A. | is frictionless and incompressible |
| B. | obeys Newton's law of velocity |
| C. | is similar to gas |
| D. | is very viscous. |
| Answer» B. obeys Newton's law of velocity | |
| 3516. |
Equation of continuity of flow is based on the principle of conservation of |
| A. | mass |
| B. | momentum |
| C. | force |
| D. | none of these. |
| Answer» B. momentum | |
| 3517. |
For exerting a pressure of 4.8 kg/cm2, the depth of oil (specific gravity 0.8), should be |
| A. | 40 cm |
| B. | 41 cm |
| C. | 56 cm |
| D. | 60 cm |
| E. | 76 cm. |
| Answer» E. 76 cm. | |
| 3518. |
A cylindrical vessel 40 cm high is revolved about its vertical axis so that the water touches the bottom when it just spills out. If the radius of the cylinder is 5 cm, the angular velocity of rotation, is |
| A. | 2 rad/sec |
| B. | 3 rad/sec |
| C. | 4 rad/sec |
| D. | 5 rad/sec |
| E. | none of these. |
| Answer» B. 3 rad/sec | |
| 3519. |
In C.G.S. system the unit of visocity is |
| A. | dyne |
| B. | joule |
| C. | poise |
| D. | Newton |
| E. | none of these. |
| Answer» D. Newton | |
| 3520. |
In Newton's viscosity equation , the coefficient ( ) is known as coefficient of |
| A. | viscosity |
| B. | absolute viscosity |
| C. | dynamic viscosity |
| D. | simple viscosity |
| E. | all the above. |
| Answer» F. | |
| 3521. |
For the flow of liquid from an open ended tube (or nozzle) leading to the formation of spray of liquid drops, the number generally applied, is |
| A. | Froude number |
| B. | Weber number |
| C. | Reynold number |
| D. | Mach number. |
| Answer» C. Reynold number | |
| 3522. |
An error of 1% in measuring the head of water over the crest of a triangular notch, produces an error in the discharge which is equal to |
| A. | 1.25% |
| B. | 1.5% |
| C. | 2.0%. |
| D. | 2.5% |
| Answer» E. | |
| 3523. |
In C.G.S. system the units of kinematic viscosity, is |
| A. | stoke |
| B. | poise |
| C. | Newton |
| D. | none of these. |
| Answer» B. poise | |
| 3524. |
A triangular notch is preferred to a rectangular notch because |
| A. | only one reading is required |
| B. | its formula is simple to remember |
| C. | it gives more accurate results for low discharge |
| D. | it measures a wide range of flows accurately |
| E. | all the above. |
| Answer» F. | |
| 3525. |
In case of laminar flow through a circular pipe, |
| A. | momentum correction factor is 1.33 |
| B. | energy correction factor is 2.00 |
| C. | both (a) and (b) |
| D. | Neither (a) nor (b). |
| Answer» D. Neither (a) nor (b). | |
| 3526. |
Number of rivets required in a joint, is |
| A. | <img src="/_files/images/civil-engineering/steel-structure-design/94-14-40-1.png"> |
| B. | <img src="/_files/images/civil-engineering/steel-structure-design/94-14-40-2.png"> |
| C. | <img src="/_files/images/civil-engineering/steel-structure-design/95-14-40-3.png"> |
| D. | <img src="/_files/images/civil-engineering/steel-structure-design/95-14-40-4.png"> |
| E. | none of these. |
| Answer» E. none of these. | |
| 3527. |
Diameter of a rivet hole is made larger than the diameter of the rivet by |
| A. | 1.0 mm for rivet diameter upto 12 mm |
| B. | 1.5 mm for rivet diameter exceeding 25 mm |
| C. | 2.0 mm for rivet diameter over 25 mm |
| D. | none of these. |
| Answer» D. none of these. | |
| 3528. |
When a tension member consists of two channel sections, the allowance for rivet hole is made for two holes from |
| A. | each web |
| B. | each flange |
| C. | both webs |
| D. | each web or one hole from each flange whichever is more |
| E. | each web or one hole from each flange whichever is less. |
| Answer» F. | |
| 3529. |
Rolled steel beams are designated by Indian Standard series and its |
| A. | weight per metre and depth of its section |
| B. | depth of section and weight per metre |
| C. | width of flange and weight per metre |
| D. | weight per metre and flange width. |
| Answer» C. width of flange and weight per metre | |
| 3530. |
The spans are considered approximately equal if the longest span does not exceed the shortest span by more than |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 20% |
| Answer» D. 20% | |
| 3531. |
If the depth of the section of an upper column is smaller than the lower column |
| A. | filler plates are provided with column splice |
| B. | bearing plates are provided with column splice |
| C. | neither filler plates nor bearing plates are provided with column splice |
| D. | filler plates and bearing plates are provided with column splice |
| E. | none of these. |
| Answer» E. none of these. | |
| 3532. |
The valve closure is said to be sudden if |
| A. | <img src="/_files/images/civil-engineering/hydraulics/162-7.275-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/162-7.275-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/162-7.275-3.png"> |
| D. | <img src="/_files/images/civil-engineering/hydraulics/162-7.275-4.png"> |
| Answer» C. <img src="/_files/images/civil-engineering/hydraulics/162-7.275-3.png"> | |
| 3533. |
A steady uniform flow is through |
| A. | a long pipe at decreasing rate |
| B. | a long pipe at constant rate |
| C. | an expanding tube at constant rate |
| D. | an expanding tube at increasing rate |
| E. | a long pipe at increasing rate. |
| Answer» C. an expanding tube at constant rate | |
| 3534. |
If Re is the Renold's number, the coefficient of friction for laminar flow is |
| A. | <img src="/_files/images/civil-engineering/hydraulics/160-7.253-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/160-7.253-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/160-7.253-3.png"> |
| D. | <img src="/_files/images/civil-engineering/hydraulics/160-7.253-4.png"> |
| Answer» E. | |
| 3535. |
Cavitation is caused by |
| A. | Low pressure |
| B. | High pressure |
| C. | Low velocity |
| D. | High velocity |
| E. | None of these. |
| Answer» B. High pressure | |
| 3536. |
The length of pipe is L, velocity of flow of a liquid in the pipe is V. If t is the time in second required to close the valve, the head of pressure |
| A. | <img src="/_files/images/civil-engineering/hydraulics/162-7.276-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/162-7.276-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/162-7.276-3.png"> |
| D. | none of these. |
| Answer» B. <img src="/_files/images/civil-engineering/hydraulics/162-7.276-2.png"> | |
| 3537. |
For critical depth of flow of water in open channels, fc the specific energy must be : |
| A. | minimum |
| B. | maximum |
| C. | average of maximum and minimum |
| D. | None of these. |
| Answer» B. maximum | |
| 3538. |
The terminal velocity (v) of a sphere of radius r and specific weight W, which travels vertically downwards in a liquid of viscosity and specific weight W, is |
| A. | <img src="/_files/images/civil-engineering/hydraulics/157-7.214-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/157-7.214-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/157-7.214-3.png"> |
| D. | <img src="/_files/images/civil-engineering/hydraulics/157-7.214-4.png"> |
| Answer» C. <img src="/_files/images/civil-engineering/hydraulics/157-7.214-3.png"> | |
| 3539. |
A 20 mm dia steel bar which is subjected to an axial tension of 2300 kg/cm2 produces a strain of 0.004 cm. If Young's modulus of steel is 2.1 x 106 kg/cm2, the bar is |
| A. | in the elastic range |
| B. | in the plastic range |
| C. | at yield point |
| D. | none of these. |
| Answer» B. in the plastic range | |
| 3540. |
Mach number is the ratio of inertia force to |
| A. | viscosity |
| B. | surface tension |
| C. | gravitational force |
| D. | elasticity. |
| Answer» E. | |
| 3541. |
Hydraulic gradient is equal to difference in water surfaces |
| A. | <img src="/_files/images/civil-engineering/hydraulics/154-7.170-1.png"> |
| B. | <img src="/_files/images/civil-engineering/hydraulics/154-7.170-2.png"> |
| C. | <img src="/_files/images/civil-engineering/hydraulics/154-7.170-3.png"> |
| D. | <img src="/_files/images/civil-engineering/hydraulics/154-7.170-4.png"> |
| Answer» C. <img src="/_files/images/civil-engineering/hydraulics/154-7.170-3.png"> | |
| 3542. |
Euler's equation for the motion of liquids assumes that |
| A. | fluid is viscous |
| B. | fluid is homogeneous and incompressible |
| C. | velocity of flow is non-uniform over the section |
| D. | flow is unsteady along the stream line. |
| Answer» C. velocity of flow is non-uniform over the section | |
| 3543. |
Poisson's ratio for steel within elastic limit, ranges from |
| A. | 0.15 to 0.20 |
| B. | 0.25 to 0.24 |
| C. | 0.25 to 0.33 |
| D. | 0.33 to 0.35 |
| E. | 0.45 to 0.50 |
| Answer» D. 0.33 to 0.35 | |
| 3544. |
Flow in pipes is laminar if Reynold number is |
| A. | less than 2100 |
| B. | more than 3000 |
| C. | between 2100 and 3000 |
| D. | none of these. |
| Answer» B. more than 3000 | |
| 3545. |
In flow, the liquid particles may possess |
| A. | potential energy |
| B. | kinetic energy |
| C. | pressure energy |
| D. | all the above. |
| Answer» E. | |
| 3546. |
For eccentrically loaded columns, the bending factor is |
| A. | <img src="/_files/images/civil-engineering/steel-structure-design/98-14-79-1.png"> |
| B. | <img src="/_files/images/civil-engineering/steel-structure-design/98-14-79-2.png"> |
| C. | <img src="/_files/images/civil-engineering/steel-structure-design/98-14-79-3.png"> |
| D. | <img src="/_files/images/civil-engineering/steel-structure-design/98-14-79-4.png"> |
| Answer» D. <img src="/_files/images/civil-engineering/steel-structure-design/98-14-79-4.png"> | |
| 3547. |
A long plate girder is subjected to a maximum bending moment M in which permitted allowable bending stress is fb. The economical depth de and the thickness of the web tw, is given by |
| A. | <img src="/_files/images/civil-engineering/steel-structure-design/105-14-162-1.png"> |
| B. | <img src="/_files/images/civil-engineering/steel-structure-design/105-14-162-2.png"> |
| C. | <img src="/_files/images/civil-engineering/steel-structure-design/105-14-162-3.png"> |
| D. | <img src="/_files/images/civil-engineering/steel-structure-design/105-14-162-4.png"> |
| E. | none of these. |
| Answer» C. <img src="/_files/images/civil-engineering/steel-structure-design/105-14-162-3.png"> | |
| 3548. |
The maximum axial load which is just sufficient to keep a column in a small deflected shape, is called |
| A. | crippling load |
| B. | buckling load |
| C. | critical load |
| D. | all the above. |
| Answer» E. | |
| 3549. |
When a large value of radius of gyration is not required |
| A. | channels are placed back to back |
| B. | channel flanges are kept inward |
| C. | channel flanges are kept outward |
| D. | none of these. |
| Answer» C. channel flanges are kept outward | |
| 3550. |
Spans of continuous fillers are considered approximately equal if the longest span does not exceed the shortest span by more than |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 20% |
| E. | 25% |
| Answer» D. 20% | |