ISRO Scientist or Engineer Civil 2018

Instructions

For the following questions answer them individually

Question 51

Which one of the following is employed to determine the strength of hardened concrete of an existing concrete structure?

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Question 52

Tricalcium aluminates (C3A)

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Question 53

The Vicatโ€™s apparatus is used for testing cement for its

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Question 54

If 1000 gms of sand is sieved through 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 gms, 100 gms, 150 gms, 200 gms, 350 gms and 200 gms respectively, then the fineness modulus of the sand is

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Question 55

Workability of a concrete mix with low water cement ratio is determined by

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Question 56

In a singly reinforced beam, the effective depth is measured from its compression edge to

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Question 57

The maximum shear stress in a rectangular beam is

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Question 58

A soil sample is partially saturated. Its natural moisture content was found to be 22% and bulk density 2 gms/c.c. If the specific gravity of the solid particles is 2.65 and the density of water is 1 gms/c.c, the void ratio of the sample is

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Question 59

The horizontal distance between parallel main reinforcement bars shall not be more than ------------ the effective depth of solid slab.

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Question 60

If the span to effective depth ratio of a simply supported beam, for span upto 10 m, does not exceed ------------, the vertical deflection limits may generally be satisfied.

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