MCQs

Civil Engineering MCQs with Explanations

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2871Civil EngineeringMedium

Consider the following statements?

A(i) and (ii) are correct

B(i), (ii) and (iii) are correct

C(i) and (iii) are correct

D(ii) and (iii) are correct

Correct answer

B. (i), (ii) and (iii) are correct

Explanation

The correct answer is (i), (ii) and (iii) are correct.

2872Civil EngineeringMedium

Froude number is significant in________?

Aall of the above

Bfull immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

Csupersonics, as with projectile and jet propulsion

Dsimultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls

Enone of the above

Correct answer

D. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls

Explanation

The correct answer is simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls.

2873Civil EngineeringMedium

Assertion A.: The determination of pH value of sewerage is important. Reason (R): The efficiency of certain treatment methods depends upon the availability of pH value________?

AA is true but R is false

BBoth A and R are true and R is the correct explanation of A

CBoth A and R are true but R is not a correct explanation of A

DA is false but R is true

Correct answer

B. Both A and R are true and R is the correct explanation of A

Explanation

The correct answer is Both A and R are true and R is the correct explanation of A.

2874Civil EngineeringMedium

With the same cross-sectional area and immersed in same turbulent flow, the largest total drag will be on________?

Aa cylinder

Ba sphere

Ca circular disc of plate held normal to flow

Da streamlined body

Correct answer

C. a circular disc of plate held normal to flow

Explanation

The correct answer is a circular disc of plate held normal to flow.

2875Civil EngineeringMedium

The maximum shear stress (q) in concrete of a reinforced cement concrete beam is________?

ALever arm/(Shear force × Width)

BShear force/(Lever arm × Width)

CWidth/(Lever arm × Shear force)

D(Shear force × Width)/Lever arm

Correct answer

B. Shear force/(Lever arm × Width)

Explanation

The correct answer is Shear force/(Lever arm × Width).

2876Civil EngineeringMedium

The minimum cover to the ties or spirals should not be less than________?

A25 mm

B15 mm

C50mm

D20 mm

Correct answer

A. 25 mm

Explanation

The correct answer is 25 mm.

2877Civil EngineeringMedium

You borrow P3,500.00 for one year from a friend at an interest rate of 1.5% per month instead of taking a loan from a bank at a rate of 18% per year. How much lesser you will pay by borrowing the money from the bank?

AP37.56

BP 62.44

CP54.66

DP44.55

Correct answer

C. P54.66

Explanation

The correct answer is P54.66.

2878Civil EngineeringMedium

A uniform pyramid and a uniform prism of same height lie with their base on the surface. Which is more stable?

Apyramid

Bprism

Cnone of the above

Dboth equally stable

Correct answer

A. pyramid

Explanation

The correct answer is pyramid.

2879Civil EngineeringMedium

A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about________?

A1/4

B1/5

C1/2

D1/3

Correct answer

A. 1/4

Explanation

The correct answer is 1/4.

2880Civil EngineeringMedium

If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is________?

A9/4

B4/3

C3/2

D27/8

Correct answer

A. 9/4

Explanation

The correct answer is 9/4.

Froude number is significant in________?

Aall of the above

Bfull immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

Csupersonics, as with projectile and jet propulsion

Dsimultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls

Enone of the above

Correct answer

D. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls

Explanation

The correct answer is simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls.

Assertion A.: The determination of pH value of sewerage is important. Reason (R): The efficiency of certain treatment methods depends upon the availability of pH value________?

AA is true but R is false

BBoth A and R are true and R is the correct explanation of A

CBoth A and R are true but R is not a correct explanation of A

DA is false but R is true

Correct answer

B. Both A and R are true and R is the correct explanation of A

Explanation

The correct answer is Both A and R are true and R is the correct explanation of A.