ISRO Scientist or Engineer Civil 2019

Instructions

For the following questions answer them individually

Question 61

Efflorescence in cementis caused dueto the exceés\Sof

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Question 62

The average shearstress forstructutal steel rolled beamsis calculated by dividing the shear force at the cross section by the

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Question 63

Webcrippling of a structural steel beam occurs due to

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Question 64

PERT stands for

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Question 65

As per mohs's scale the hardness of quartz and topaz respectively are

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Question 66

The whole period of cultivation from the time when irrigation water is first supplied for preparation of the ground at the time of sowing to its last watering before harvesting is called

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Question 67

If the crop rice requires, about 10 cms depth of water at an average interval of about 10 days and the crop period ofthe ricé.is 110 days, the delta for the croprice will be

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Question 68

A barrel camber for a highway consists of

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Question 69

Creeping of rails can be checkedby using

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Question 70

The formation width of a highway with no transverse slope on an embankmentis B. The height of the embankment is d and side slope of the embankmentis S: 1, The area of cross
section of the embankment is

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