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UPSC Civil Service Exam Questions - Engineering

Q1:

Consider the following strengths of concrete :
1. Cube strength
2. Cylinder strength
3. Split-tensile strength
4. Modulus of rupture
The correct sequence in decreasing order of these strengths is

A 3, 4, 2, 1

B 3, 4, 1, 2

C 4, 3, 2, 1

D 4, 3, 1, 2

ANS:D - 4, 3, 1, 2

Cylinder=0.8 x cube strength;

Split tensile strength = 0.66 x modulus of rupture.
So, option A is correct.