Design of Concrete Structures MCQs

A. forces of tension and compression change but lever arm remains unchanged

B. forces of tension and compressions remain unchanged but lever arm changes with the moment

C. both forces of tension and compres-sion as well as lever arm change

D. both forces of tension and compres-sion as well as lever arm remain unchanged

A. 0.003

B. 0.0003

C. 0.00003

D. 0.03

A. 3.0 m and 1.5 m

B. 1.5 m and 3.0 m

C. 3.0 m and 3.0 m

D. 1.5 m and 1.5 m

A. steel and concrete are same

B. steel is lower than that for concrete

C. steel is higher than that for concrete

D. none of the above

A. 100 mm

B. 150 mm

C. 200 mm

D. 250 mm

A. 0.15% to 2%

B. 0.8% to 4%

C. 0.8% to 6%

D. 0.8% to 8%

A. 0.367 xu

B. 0.416 xu

C. 0.446 xu

D. 0.573 xu

A. increased by 10% for bars in compression

B. increased by 25% for bars in compression

C. decreased by 10% for bars in compression

D. decreased by 25% for bars in compression

A. ±5% of average

B. ± 10% of average

C. ± 15% of average

D. ±20% of average

A. directly proportional to compressive strength

B. inversely proportional to compressive strength

C. directly proportional to square root of compressive strength

D. inversely proportional to square root of compressive strength