MCQ
21. Sensitivity of a soil can be defined as-
Percentage of volume change of soil under saturated condition
Ratio of compressive strength of unconfined undisturbed soil to that of soil in a remoulded state
Ratio of volume of voids to volume of solids
None of the above
22. Cast iron তৈরিতে ব্যবহৃত ফার্নেস হলো-
Blast furnace
Cupola furnace
Open hearth furnace
Bessemer converter
23. The pacing of transverse reinforcement of columa is decided by the following considerations:
Pitched and sloping
Flat roof roof
Shell roof
None of those
24. At the neutral axis of a beam, the shear stress is-
zero
minimum
maximum
infinity
25. The compression index of a soil
Decreases with an increase in the liquid limit
Increases with an increase in the liquid limit
Decreases with an increase in the plastic limit
Is not related with plastic limit
26. প্রথম শ্রেণির ইটের নূন্যতম ক্রাশিং স্ট্রেংথ সাধারণত কত MN/m² হয়ে থাকো -
7.5
10.5
12.5
14.0
27. কোনটি Mechanical property?
Density
Thermal conductivity
Hardness
Porosity
28. RCC column minimum clear cover কত রাখা উচিত?
<40mm or diameter
>40mm or diameter
>25mm or diameter
<25mm or diameter
29. কংক্রিটের Strength জানার জন্য সাধারণত Concrete-এর Cylinder-এর কতদিনের test করা হয়?
15 দিন
20 দিন
28 দিন
35 দিন
30. If the load on beam is increased, the tensile stress in the concrete below the neutral axis will-
decrease
increase
remain unchanged
all of these
31. Slab এ Clear cover সর্বনিম্ন কত মিমি রাখা উচিত?
10
12
15
18
32. A continuous beam is one which is--
fixed at both ends
fixed at one end and free at the other end
extending beyond the supports
supported on more than two supports
33. Slab-এর ক্ষেত্রে Rainforcment এর সর্বোচ্চ % কত?
২%
৪%
৬%
৮%
34. Concrete are unit weigth—
150 lb/ft³
160 lb/ft³
145 lb/ft³
155 lb/ft³
35. If the coefficient of the active pressure Ka is 1/3, the coefficient of passive pressure Kp, is-
1/3
1
2/3
3
36. Investment casting-এ ব্যবহৃত হয় কোন Pattern?
Wax pattern
Wooden pattern
Polystyrene pattern
Lead pattern
37. The diameter of longitudinal bars in a column should not be less than-
4 mm
8 mm
12 mm
16 mm
38. গিয়ার তৈরিতে সাধারণত ব্যবহৃত হয় –
Cast iron
Steel
Copper
Wrought iron
39. Le-chatelier apparatus used to perform-
Fineness test
Soundness test
Consistency test
Compressive strength test
40. Durable concrete-এর জন্য Water-Cement ratio সর্বোচ্চ-
0.2
0.4
0.6
0.8