Quiz: Civil Engineering
Each question carries 1 mark
Negative marking: 1/4 mark
Time: 8 Minutes
Q1. The true length of line is known to be 300m. when this line is again measured with a new 30 m tape, the length is found to be 300.90 m. the correct length of the tape is
(a) 28.90 m
(b) 29.91 m
(c) 30.19 m
(d) 28.30 m
Q2. Find the plinth area of building if a building built up area 350m² is constructed with a courtyard of 5.5 × 6.5m inside the building
(a) 314.24 m²
(b) 314.25 m²
(c) 314.26 m²
(d) 314.27 m²
Q3. The defects of a tree caused by injuries sustained during its young age are called _________.
Q4. A mean annual runoff 2m³/s from a catchment of area 10 km² represents an effective rainfall of nearly:
(a) 530 cm
(b) 590 cm
(c) 630 cm
(d) 658 cm
Q5. A material has identical properties in all directions is said to be
Q6. Partial safety factors for concrete and steel respectively may be taken as:
(a) 1.5 and 1.15
(b) 1.5 and 1.78
(c) 3 and 1.78
(d) 3 and 1.2
Sol. True length of line (L) = 300 m
Measured length of line (L’) = 300.90 m
Length of tape (l) = 30 m.
True length of tape (l’) =?
L × l = L’ × l’
300 × 30 = 300.9 × l’
Sol. Built up area = 350 m²
Courtyard area = 5.5 × 6.5 m² = 35.75 m²
Plinth area = 350 – 35.75 = 314.25 m²
Sol. Burls → these are the uneven projections on the body of the tree during its growth. These are mainly due to effects of injuries and shocks during its young age.
Annual runoff = 2 m³/s
Area of = 10 km² = 10 × 10^6 m²
Effective rainfall = (Annual Runoff)/(Area of catchment)
=(2×60×60×24×365〖 m〗^3 )/(10×10^6 m^2 )
Sol. Isotropic → A material is said to be isotropic when it has same properties in all direction.
Anisotropic → A material is said to be anisotropic when it has different properties in all direction.
Homogenous → Same property at each cross-section.
Orthotropic → Different property in three mutually perpendicular direction.
Sol. In limit state method.
Partial safety factor for RCC = 1.5
Partial safety factor for steel = 1.15
In working state method.
Partial safety factor for R.C.C. = 3
Partial safety factor for steel = 1.78