118 Sub-Engineer Mock Test of 50 Past Question #84 Sub-Engineer Collection of 50 Past Question from Loksewa Aayog Mock Test. 1 / 50 1. For true difference in elevations between two points A and B, the level must be set up A. at any point between A and B B. at the exact mid point of A and B C. near the point A D. near the point B 2 / 50 2. ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30° the bearing of CD, is A. 90° B. 120° C. 210° D. 270° 3 / 50 3. Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than A. 30 m B. 25 m C. 20 m D. 15 m 4 / 50 4. Pick up the correct statement from the following A. Box sextant is used for the measurement of horizontal angles B. Cross staff is used for setting out right angles C. Gradiometer is used for setting out any required gradient D. All of the above 5 / 50 5. Initial setting time of cement for asbestos cement products should be not less than A. 30 minutes B. 50 minutes C. 75 minutes D. 90 minutes 6 / 50 6. The variety of pig iron used for the manufacture of steel by Bessemer process, is A. Bessemer pig B. Grey pig C. White forge pig D. Mottled pig 7 / 50 7. For melting one tonne of cast iron A. 700m³ air is required B. 20 kg limestone is required C. one quintal coke is required D. all of the above 8 / 50 8. 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 9 / 50 9. A cantilever beam rectangular in cross-section is subjected to an isolated load at its free end.If the width of the beam is doubled, the deflection of the free end will be changed in the ratio of A. 8 B. 1/8 C. 1/2 D. 2 10 / 50 10. The phenomenon of slow extension of materials having constant load, i.e. increasing with the time is called A. creeping B. yielding C. breaking D. none of these 11 / 50 11. The maximum resistance against rotation, is offered by the weld at a point A. most distant B. least distant C. at either end D. centrally located 12 / 50 12. For structural analysis of forces, the method refers to A. moment-area theorem B. three-moment equation C. Maxwell's reciprocal theorem D. none of these 13 / 50 13. For the most economical trapezoidal open channel A. Failure plane carries maximum shear stress B. Failure plane does not carry maximum shear stress C. Failure plane carries shear stress equal to maximum shear stress D. All of the above 14 / 50 14. Hydraulic ram is a device A. for lifting water without an electric motor B. for accelerating water flow C. for lifting heavy loads D. none of these 15 / 50 15. Gauge pressure is: A. absolute pressure – atmospheric pressure B. absolute pressure + atmospheric pressure C. atmospheric pressure – absolute pressure D. none of these 16 / 50 16. Failure of the stability of slopes, generally occurs along A. slip plane B. a horizontal surface C. a curved surface D. all the surfaces 17 / 50 17. Pick up the correct statement from the following A. Failure plane carries maximum shear stress B. Failure plane does not carry maximum shear stress C. Failure plane carries shear stress equal to maximum shear stress D. none of these 18 / 50 18. Geologic cycle for the formation of soil, is A. Upheavel→ transportation→ deposition → weathering B. Weathering→ upheaval → transportation → deposition C. Transportation →upheaval →weathering→ deposition D. Weathering →transportation →deposition → upheaval 19 / 50 19. If a column is subjected to dead load and super imposed load only, the maximum ratio 1/r should not be greater than A. 180 B. 250 C. 350 D. 400 20 / 50 20. If the dimensions of a rectangular section of a short column are 15 cm x 20 cm, its unsupported length should be restricted to A. 9.0m B. 10.0m C. 11.0m D. 12.0m 21 / 50 21. The designed transverse shear in lacing is assumed as A. 2.5% of axial load B. 3% of axial load C. 3.5% of axial load D. 4% of axial load 22 / 50 22. For the stability of a structural part, the weight or anchorage should be A. 1.2 times the minimum overturning moment due to dead load B. 1.4 times the minimum overturning moment due to dead load C. sum of (a) and (b) D. none of these. 23 / 50 23. A solid core of rock is formed inside the cylinder in the case of A. auger boring B. percussion drilling C. diamond drilling D. wash boring 24 / 50 24. The single stage well point system of dewatering an excavation can be used if the depth of excavation does not exceed A. 5m B. 15m C. 25m D. 35m 25 / 50 25. After casting, an ordinary cement concrete on drying A. expands B. mix C. shrinks D. none of these. 26 / 50 26. Hydration of cement is due to chemical action of water with A. Tricalcium silicate and dicalcium silicate B. Dicalcium silicate and tricalcium aluminate C. Tricalcium aluminate and tricalcium alumino ferrite D. all the above 27 / 50 27. Manholes along the mains from the source to a city are provided at 500 m intervals in A. steel pipes B. R.C.C. pipes C. hume steel pipes D. all of the above 28 / 50 28. The population growth curve is A. S-shaped curve B. parabolic curve C. circular curve D. straight line 29 / 50 29. Recuperation test is carried out to determine A. turbidity of water B. pH value of water C. yield of well D. discharge from a well 30 / 50 30. Clogging of sewers, is caused due to A. silting B. low discharge C. greasy and oily matters D. all of the above 31 / 50 31. Water-shed line is abondened for aligning an irrigation canal if A. water shed forms a sharp loop B. canal has to take off from a river C. towns and villages are located on the water shed line D. all of the above 32 / 50 32. Meandering of a river generally occurs, in A. rocky stage B. delta stage C. boulder stage D. trough stage 33 / 50 33. Bed bars in a canal are provided A. to watch the general behaviour of canal B. to measure the discharge C. to raise the supply level D. to control the silting 34 / 50 34. Reinforcement in cement concrete slab of road pavements, is placed A. longitudinally B. transversely C. longitudinally and transversely D. in the form of welded wire mesh 35 / 50 35. The ideal shape of a transition curve, is A. clothoid B. cubic spiral C. cubic parabola D. lamniscate 36 / 50 36. Driving vehicles on wet surfaced roads, is dangerous because it may A. skid B. slip C. overturn D. all of the above 37 / 50 37. Length of vehicles does not affect A. extra widening B. minimum radius of turning C. passing sight distance D. width of shoulders 38 / 50 38. Transverse joints are provided at distances varying from A. 10 m to 15 m B. 12 m to 18 m C. 16 m to 24 m D. 17 m to 27 m 39 / 50 39. Floating gradients are generally provided A. along maximum gradients B. along minimum gradients C. at summit curves D. at valley curves 40 / 50 40. The inventor of road making as a building science, was A. Sully B. Tresguet C. Telford D. Macadam 41 / 50 41. The floor area includes the area of the balcony up to A. 100% B. 75% C. 50% D. 25% 42 / 50 42. While estimating the qualities for the construction of a building, the correct metric unit is A. Metre for length B. Cubic metre for area C. Kilogram for weight D. Litre for capacity 43 / 50 43. In a compaction test, as the compaction effort is increased, the optimum moisture content A. decreases B. remains same C. increases D. increases first and thereafter decreases 44 / 50 44. Principle involved in the relationship between submerged unit weight and saturated weight of a soil is based on A. Equilibrium of floating bodies B. Archimedes' principle C. Stokes' law D. Darcy's law 45 / 50 45. When a retaining wall moves away from the backfill, the pressure exerted on the wall is termed as A. passive earth pressure B. swelling pressure C. pore pressure D. active earth pressure 46 / 50 46. The removal of dissolved organic matter occurs in A. slow sand filters B. trickling filters C. rapid sand filters D. dual media filters 47 / 50 47. On an immersed body in a flowing fluid the lift force is : A. due to buoyant force B. always in the opposite direction to gravity C. due to Wake phenomenon D. the dynamic fluid-force component normal to approach velocity 48 / 50 48. In a section, shear centre is a point through which, if the resultant load passes, the section will not be subjected to any A. Bending B. Tension C. Compression D. Torsion 49 / 50 49. Bituminous materials are used in highway construction primarily because of their : A. cementing and water-proofing properties B. load bearing capacity C. high specific gravity D. black colour which facilitates road markings 50 / 50 50. Excessive fluoride in drinking water causes A. Alzheimer's disease B. Mottling of teeth and embrittlement of bones C. Methemoglobinemia D. Skin cancer Your score is The average score is 50% 0% Restart quiz Exit civil engineermcqcivilmock testpscsub engineerupsc
