Civil Engineering MCQ Short Test- 7

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PWD, WRD, SSC, MPSC, ZP, नगरपरिषद, जलसंपदा, सरळसेवा परीक्षा साठी उपयुक्त

1➤ If the average bending stress is 6 kg/cm2 for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is

ⓐ 28 d
ⓑ 38 d
ⓒ 48 d
ⓓ 58 d

2➤ For M 150 mix concrete, according to I.S. specifications, local bond stress is

ⓐ 100 kg
ⓑ 15 kg
ⓒ 10 kg
ⓓ 20 kg

3➤ Distribution of shear intensity over a rectangular section of a beam, follows:

ⓐ A straight line
ⓑ A parabolic curve
ⓒ A circular curve
ⓓ An elliptical curve

4➤ If the shear stress in a R.C.C. beam is

ⓐ Equal or less than 5 kg/cm2, no shear reinforcement is provided
ⓑ Greater than 20 kg/cm2, the size of the section is changed
ⓒ Greater than 4 kg/cm2, but less than 20 kg/cm2, shear reinforcement is provided
ⓓ All the above

5➤ In a pre-stressed member it is advisable to use

ⓐ Low strength concrete only
ⓑ Low strength concrete but high tensile steel
ⓒ High strength concrete only
ⓓ High strength concrete and high tensile steel

6➤ In a simply supported slab, alternate bars are curtailed at

ⓐ 1/7th of the span
ⓑ 1/5th of the span
ⓒ 1/4th of the span
ⓓ 1/6th of the span

7➤ In which of the following cases the method of deflection distances is used?

ⓐ Road survey
ⓑ Town survey
ⓒ Land surveys
ⓓ Railway planning survey

8➤ Which of the following is having the same principle as that of photo-theodolite?

ⓐ Theodolite surveying
ⓑ Plane-table surveying
ⓒ Compass surveying
ⓓ Traverse surveying

9➤ Which of the following processes has more accuracy in its output?

ⓐ Plane table surveying
ⓑ Chain surveying
ⓒ Total station
ⓓ Compass surveying

10➤ The point on the celestial sphere vertically below the observer's position, is called

ⓐ nadir
ⓑ pole
ⓒ zenith
ⓓ celestial point

11➤ The bubble tube is nearly filled with.

ⓐ alcohol or chloroform
ⓑ a liquid having low freezing point
ⓒ a liquid which is very mobile
ⓓ all the above.

12➤ The branch of surveying in which both horizontal and vertical positions of a point, are determined by making instrumental observations, is known

ⓐ tacheometry
ⓑ tachemetry
ⓒ telemetry
ⓓ all the above

13➤ Tachometric formula for horizontal distance using inclined sights through θ is obtained by multiplying

ⓐ the constants by sin2 θ
ⓑ the constants by cos2 θ
ⓒ the multiplying constant by cos2 θ and additive constant by cos θ.
ⓓ the constants by cos θ

14➤ While taking Observations for the height and distances, which of the following method of surveying is used?

ⓐ Geodic surveying
ⓑ Chain surveying
ⓒ Plane surveying
ⓓ Compass surveying

15➤ The liquid limit is determined from the Casagrande apparatus. The apparatus consists of a semi-spherical brass cup that is repeatedly dropped onto hard rubber base from a height of

ⓐ 10 mm
ⓑ 15 mm
ⓒ 30 mm
ⓓ 20 mm

16➤ The ratio of the breadth to effective depth of a beam is kept

ⓐ 0.25
ⓑ 0.50
ⓒ 0.75
ⓓ 0.70

17➤ In a cantilever retaining wall without a heel slab

ⓐ Thickness of the stem is kept same throughout
ⓑ Width of the base slab is kept 0.7 time the total height of the wall
ⓒ Base slab is made 10 cm thicker than the stem
ⓓ All the above

18➤ . ‘P’ is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is ‘A’ and sectional modulus is ‘Z’. The maximum stress ‘f’ in the beam, subjected to a maximum bending moment ‘M’, is

ⓐ f = (P/A) + (M/Z)
ⓑ f = (A/P) + (M/Z)
ⓒ f = (P/A) + (Z/M)
ⓓ f = (P/A) + (M/6Z)

19➤ T-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis

ⓐ Remains within the flange
ⓑ Remains below the slab
ⓒ Coincides the geometrical centre of the beam
ⓓ None of these

20➤ For the design of a simply supported T-beam the ratio of the effective span to the overall depth of the beam is limited to

ⓐ 20
ⓑ 60
ⓒ 50
ⓓ 10

21➤ The width of the rib of a T-beam, is generally kept between

ⓐ 1/3 to 1/2 of rib depth
ⓑ 1/2 to 3/4 of rib depth
ⓒ 1/7 to 1/3 of rib depth
ⓓ 1/3 to 2/3 of rib depth

22➤ A ribbed slab is provided for

ⓐ Thermal insulation
ⓑ Acoustic insulation
ⓒ A plain ceiling
ⓓ All the above

23➤ The maximum diameter of a bar used in a ribbed slab, is

ⓐ 6 mm
ⓑ 20 mm
ⓒ 12 mm
ⓓ 22 mm

24➤ A column is regarded as long column if the ratio of its effective length and lateral dimension, exceeds

ⓐ 15
ⓑ 20
ⓒ 10
ⓓ 25

25➤ According to the steel beam theory of doubly reinforced beams

ⓐ Tension is resisted by tension steel
ⓑ Stress in tension steel equals the stress in compression steel
ⓒ Compression is resisted by compression steel
ⓓ All the above