239.  Yielding of steel in singly reinforced beam occurs in
A. balanced reinforced beam
B. under-reinforced beam
C. over reinforced beam
D. none of these

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240. In under reinforced singly reinforced beam, concrete crushes at its maximum strain i.e.,
A.0.35%
B.0.30%
C.0.25%
D.0.20%

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241.  The ratio of the limiting value of the depth of neutral axis and the depth of the section of a singly reinforced beam is equal to:
A.0.0035
B.0.0055
C.0.0055 + 0.87
D.0.0035 + 0.87 Ts

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242.  The depth of neutral axis of singly reinforced beam
A. decreases with the increases of characteristic strength of steel
B. increases with the increases of characteristic strength of steel
C. remains unaffected the change of characteristic strength of steel
D. none of these

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243. The characteristic strength of steel is defined as the value of the strength of 3teel below which not more than
A. 2% of the test results fail
B. 3% of the test results fail
C. 4% of the test results fail
D. 5% of the test results fail

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244. The characteristic strength (aK) of concrete is usually referred to
A. 5 days cube strength
B. 7 days cube strength
C. 21 days cube strength
D. 28 days cube strength

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245.  Characteristic load on structure is defined as the load which has probability not being exceeded during the life time of the structure
A.85%
B.90%
C.95%
D. None of these

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