Practice Test: Question Set - 13
1. According to IS: 4561978, minimum slenderness ratio for a short column is
- (A) Less than 12
- (B) Less than 18
- (C) Between 18 and 24
- (D) More than 24
2. Water cement ratio is
- (A) Volume of
water to that of cement
- (B) Weight of
water to that of cement
- (C) Weight
of concrete to that of water
- (D) Both (a) and
(b) of the above
3. For a concrete mix 1 : 3 : 6 and water cement ratio 0.6 both by weight, the quantity of water required per bag, is
- (A) 10 kg
- (B) 12 kg
- (C) 14 kg
- (D) 16 kg
4. Half of the main steel in a simply supported slab is bent up near the support at a distance of ‘x’ from the center of slab bearing where ‘x’ is equal to (Where ‘l’ is the span)
- (A) l/3
- (B) l/5
- (C) l/7
- (D) l/10
5. Pick up the incorrect statement from the following:
- (A) In properly
graded aggregates, bulk density is more
- (B) In single
size aggregates, bulk density is least
- (C) In single
size aggregates, bulk density is maximum
- (D) None of
these
6. To prevent segregation, the maximum height for placing concrete, is
- (A) 100 cm
- (B) 125 cm
- (C) 150 cm
- (D) 200 cm
7. For a simply supported beam of span 15 m, the minimum effective depth to satisfy the vertical deflection limits should be
- (A) 600 mm
- (B) 750 mm
- (C) 900 mm
- (D) More than 1 m
8. For compacting plain concrete road surface of thickness less than 20 cm, we use
- (A) Internal
vibrator
- (B) Screed
vibrator
- (C) Form
vibrator
- (D) None of
these
9. Expansion joints are provided if the length of concrete structures exceeds
- (A) 10 m
- (B) 15 m
- (C) 25 m
- (D) 45 m
10. The permissible diagonal tensile stress in reinforced brick work is
- (A) About 0.1 N/mm²
- (B) Zero
- (C) 0.3 N/mm² to 0.7 N/mm²
- (D) About 1.0 N/mm²
11. Pick up the correct statement from the following:
- (A) According to
the petrological characteristics, concrete aggregates are classified as heavy
weight, normal weight and light weight
- (B) According
to the shape of the particles, concrete aggregates are classified as rounded
irregular, angular and flaky
- (C) According
to the surface texture of the particles, the concrete aggregates are classified
as glassy, smooth, granular, rough, crystalline, honey combed and porous
- (D) All the
above
12. Pick up the correct statement from the following:
- (A) The
concrete gains strength due to hydration of cement
- (B) The
concrete does not set at freezing point
- (C) The
strength of concrete increases with its age
- (D) All the
above
13. The critical section for finding maximum bending moment for footing under masonry wall is located
- (A) At the middle of the wall
- (B) At the edge of the wall
- (C) Halfway between the middle and edge of the wall
- (D) At a distance equal to effective depth of
footing from the edge of the wall
14. Separation of water or water sand cement from a freshly concrete, is known
- (A) Bleeding
- (B) Creeping
- (C) Segregation
- (D) Flooding
15. On a grading curve, the gap grading is represented by
- (A) A horizontal
line
- (B) A vertical
line
- (C) N.W.
inclined line
- (D) N.E.
inclined line
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