411. Finer grinding of cement______________?
A. affects only the early development of strength
B. affects only the ultimate strength
C. both (A. and (B.
D. does not affect the strength

412. Poisson’s ratio for concrete_______________?
A. remains constant
B. increases with richer mixes
C. decreases with richer mixes
D. none of the above

413. The factor of safety for______________?
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

414. The fineness modulus of fine aggregate is in the range of______________?
A. 2.0 to 3.5
B. 3.5 to 5.0
C. 5.0 to 7.0
D. 6.0 to 8.5

415. The compressive strength of 100 mm cube as compared to 150 mm cube is always_______________?
A. less
B. more
C. equal
D. none of the above

416. If a beam fails in bond, then its bond strength can be increased most economically by___________?
A. increasing the depth of beam
B. using thinner bars but more in number
C. using thicker bars but less in number
D. providing vertical stirrups

417. If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called________________?
A. balanced beam
B. under-reinforced beam
C. over-reinforced beam
D. none of the above

418. If the permissible stress in steel in tension is 140 N/mm2, then the depth of neutral axis for a singly reinforced rectangular balanced section will be___________________?
A. 0.35 d
B. 0.40 d
C. 0.45 d
D. dependent on grade of concrete also

419. Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is_____________?
A. M15
B. M20
C. M 10
D. M25

420. Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is_______________?
A. 28 liters
B. 30 liters
C. 32 liters
D. 34 liters

NOTE
IF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.
PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.
THANK YOU

Leave a Reply