Concrete Technology and Design of Concrete Structures Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than 42 MPa and 35 MPa 53 MPa and 42 MPa 42 MPa and 53 MPa 35 MPa and 42 MPa 42 MPa and 35 MPa 53 MPa and 42 MPa 42 MPa and 53 MPa 35 MPa and 42 MPa ANSWER DOWNLOAD EXAMIANS APP
Concrete Technology and Design of Concrete Structures Poisson’s ratio for concrete increases with richer mixes remains constant decreases with richer mixes None of these increases with richer mixes remains constant decreases with richer mixes None of these ANSWER DOWNLOAD EXAMIANS APP
Concrete Technology and Design of Concrete Structures The maximum value of hoop compression in a dome is given by (where, w = load per unit area of surface of dome R = radius of curvature d = thickness of dome) 2wR/d wR / 4d wR/d wR/2d 2wR/d wR / 4d wR/d wR/2d ANSWER DOWNLOAD EXAMIANS APP
Concrete Technology and Design of Concrete Structures In prestressed concrete forces of tension and compressions remain unchanged but lever arm changes with the moment forces of tension and compression change but lever arm remains unchanged both forces of tension and compres-sion as well as lever arm remain unchanged both forces of tension and compres-sion as well as lever arm change forces of tension and compressions remain unchanged but lever arm changes with the moment forces of tension and compression change but lever arm remains unchanged both forces of tension and compres-sion as well as lever arm remain unchanged both forces of tension and compres-sion as well as lever arm change ANSWER DOWNLOAD EXAMIANS APP
Concrete Technology and Design of Concrete Structures The design yield stress of steel according to IS: 456-1978 is (where fy is the characteristic yield strength of steel) 0.67 fy 0.37 fy 0.87 fy 0.57 fy 0.67 fy 0.37 fy 0.87 fy 0.57 fy ANSWER DOWNLOAD EXAMIANS APP
Concrete Technology and Design of Concrete Structures Diagonal tension in a beam Increases below the neutral axis and decreases above the neutral axis Remains same Decreases below the neutral axis and increases above the neutral axis Is maximum at neutral axis Increases below the neutral axis and decreases above the neutral axis Remains same Decreases below the neutral axis and increases above the neutral axis Is maximum at neutral axis ANSWER DOWNLOAD EXAMIANS APP
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