ISRO Scientist or Engineer Civil 2020

Instructions

For the following questions answer them individually

ISRO Scientist or Engineer Civil 2020 - Question 41


Which of the following tests compares the dynamic modulus of elasticity of samples of concrete?

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ISRO Scientist or Engineer Civil 2020 - Question 42


The bulk modulus of the elasticity of the material is twice its moduus of rigidity . The Poisson's ratio of the material is

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ISRO Scientist or Engineer Civil 2020 - Question 43


Two planks each of $$50mm \times 50 mm $$ section are glued together along the length to form a section 50mm \times 100 mm and used as a beam .If the shear force at a section is 1000 N ,What is the maximum shear stress on the glue ?

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ISRO Scientist or Engineer Civil 2020 - Question 44


At certain point in a structural member , there are perpendicular stresses 80 $$\frac{N}{mm^{2}}$$ and 20 $$\frac{N}{mm^{2}}$$,both tensile .what is the equivalent stress in simple tension ,according to the maximum principal strain theory ?(poisson's ratio=0.25)

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ISRO Scientist or Engineer Civil 2020 - Question 45


Two simply supported beams are made up of the same material and are of the same cross section .Both beams carry uniformly distributed loads of equal intensities .one of the beam is 2 m long and the other is 4 m long . The 2 m long beam shows a central deflection of 1mm.what is the central deflection of the 4m long beam?

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ISRO Scientist or Engineer Civil 2020 - Question 46


when the ratio of the long to short dimensions of the slab is greater than X,the slab shall be designed as one-way slab , where X is

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ISRO Scientist or Engineer Civil 2020 - Question 47


A reinforced concrete cantilever porch has thickness t . The main reinforcement steel will be placed :

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ISRO Scientist or Engineer Civil 2020 - Question 48


A purely cohensive soil was tested by unconfined compression test .The mean unconfined compression strength was obtained as 50 $$\frac{kN}{sq.m}$$. The net ultimate bearing capacity of the soil adopting terzaghils concept will be (adopt bearing capacity factor =5.7,1 kg approximately equal to 10 N)

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ISRO Scientist or Engineer Civil 2020 - Question 49


Web buckling occurs ina beam due to excessive

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ISRO Scientist or Engineer Civil 2020 - Question 50


In an Isolated reinforced concrete footing of effective depth d , the stress in punching shear is checked

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