MCQ
1461. এক ঘনমিটার চুনের ওজন-
৬৪০ কেজি
৬৮০ কেজি
৬৯০ কেজি
৭০০ কেজি
1462. A compound truss may be formed by connecting two simple rigid frames, by --
Two bars
Three bars
Three parallel bars
Three bars intersecting at a point
1463. মাটির কাজের পরিমাণ নির্ণয়ে নিচের কোন সূত্রটি তুলনামূলকভাবে নির্ভরযোগ্য?
গড় প্রস্থচ্ছেদ সূত্র
মধ্য প্রস্থচ্ছেদ সূত্র
প্রিজমডোল সূত্র
সবগুলোই
কোনোটিই নয়
1464. The ratio of the area of cross-section of a circular section to the area of its core, is--
4
8
12
16
1465. For determining the force in the member AB of the truss shown in the given figure by method of sections, the section is made to pass through AB, AD and ED and the moments are taken about
Joint C
Joint B
Joint D
Joint A
1466. The force in CD of the truss shown in given figure, is--
3t compression
3t tension
Zero
1.5t compression
1467. The force in CD of the truss shown in given figure, is--
3t compression
3t tension
Zero
1.5t compression
1468. A masonry dam (density = 20,000 N/m3) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be --
75 N/m2
750 N/m2
7500 N/m2
75000 N/m
1469. The ratio of crippling loads of a column having both the ends fixed to the column having both the ends hinged, is --
1
2
3
4
1470. In plastic analysis, the shape factor for rectangular section, is
1.4
1.5
1.6
1.7
1471. The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length 1 and of flexural rigidly EI, is --
wl3/3El
wl4/3E1
wl4/8EI
wl4/12E1
1472. At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of the section by--
Depth of the section
Depth of the neutral axis
Maximum tensile stress at the section
Maximum compressive stress at the section
1473. The ratio of the area of cross-section of a circular section to the area of its core, is--
Material is homogeneous
Material is isotropic
Young's modulus is same in tension as well as in compression
All the above
1474. A spring of mean radius 40 mm contains 8 action coils of steel (N80000 N/mm2), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is --
25 N
30 N
35 N
40 N
1475. A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm2 is:
4.0 mm
4.5 mm
5.0 mm
5.5 mm
1476. At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of the section by--
Depth of the section
Depth of the neutral axis
Maximum tensile stress at the section
Maximum compressive stress at the section
1477. An isolated load W is acting at a distance a from the left hand support, of a three hinged arch of span 21 and rise h hinged at the crown, the horizontal reaction at the support, is--
Wa/h
Wa/2h
2W/ha
2h/Wa
1478. The forces acting normally on the cross section of a bar shown in the given figure introduce--
Compressive stress
Tensile stress
Shear stress
None of these
1479. The maximum bending moment for a simply supported beam with a uniformly distributed load w/unit length, is --
W12
WF/4
WF/8
WP/12
1480. A bar L metre long and having its area of cross- section A, is subjected to a gradually applied tensile load W. The strain energy stored in the bar is --
WL/2AE
WL/AE
WIL/AE
W^2L/2AE