MCQ
3083. The modules of elasticity for 400 (60 grade) is approximately equal to-
214 kn/mm²
274 kn/mm²
314 kn/mm²
414 kn/mm²
3084. The setting time of the cement is the governing factor for-
mixing of concrete
placing of concrete
compaction of concrete
all of these
3086. A beam fixed at one end and free at the other end-
cantilever
truss
false beam
none of these
3087. When a load on the free end of a cantilever beam is increased, failure will occur-
at the free end
at the fixed end
at the middle of the beam
distance 2L/3 from end
3088. The bending moment on a section is maximum where shear force is-
minimum
maximum
changing
zero
3089. According to standard specifications the full strength of concrete is achieved after days-
7
14
21
28
3090. The slenderness ratio is the ratio of. প্লেন্ডারনেস রেশিও হলো)
area of column to least radius of gyration (কলামের আকার ও নূন্যতম রেডিয়াস অব জাইরেশন এর অনুপাত)
length of column to least radius of gyration (কলামের দৈঘ্য ও নূন্যতম রেডিয়াস অব জাইরেশন এর অনুপাত)
least radius of gyration to area of column (নূন্যতম রেডিয়াস অব জাইরেশন ও কলামের আকারের অনুপাত)
least radius of gyration to length of column (নূন্যতম রেডিয়াস অব জাইরেশন ও কলামের দৈর্ঘ্যের অনুপাত)
3091. A good building stone is one which does not absorb more than of it's weights of water after one day immersion.
5%
10%
15%
25%
3092. Moment of inertia of a circular section about its diameter (d) is (d ব্যাস বিশিষ্ট বৃত্তাকার ক্ষেত্রের মোমেন্ট অব ইনার্শিয়া)
π d³ /126
πd³/32
πd/32
πd²/64
3093. The unit bearing capacity of footing in sand-
decreases with depth of footing
decreases with width of footing
increases with depth of footing
increases with width of footing
3094. A continuous beam is one which is-
fixed at both end
fixed at one end free at other end
supported on more than two support
extending beyond the support
3095. The maximum water cement ratio for durable concrete is-
0.2
0.4
0.8
2.8
3096. The chief ingredient of paint is-
alcohol
oil
drier
pigment
3097. One cubic meter of water weights-
100 litter
250 litter
500 litter
1000 litter
3098. The shear force of a simply supported beam of length 'l' carrying a uniformly distributed load OD w per unit length is-
0
w1/4
w1/2
w¹ 1
3099. At the neutral axis of a beam the shear stress is-
zero
minimum
maximum
infinity
3100. The slump test of concrete is used to measure-
workability
homogeneity
impact
tensile strength