Quiz: Civil Engineering
Each question carries 1 mark
Negative marking: 1/3 mark
Time: 8 Minutes
Q1. The working stress for structural steel in tension is of the order of
(a) 15 N/mm²
(b) 75 N/mm²
(c) 150 N/mm²
(d) 750 N/mm²
Q2. A fully saturated soil has a water content of 200 percent. If G = 2.6, the void ratio is:
(d) None of these above
Q3. The stone that exhibits highest compressive strength is:
Q4. Minimum size of weld for a 9.5 mm thick plate will be
(a) 3.0 mm
(b) 5.0 mm
(c) 6.0 mm
(d) 8.0 mm
Q5. The probable maximum flood
(a) is less than standard project flood
(b) is more than standard project flood
(c) is same as design flood
(d) none of the above
Q6. Geologic cycle for the formation of soil, is …………………….
(a) Upheaval → transportation → deposition → weathering
(b) Weathering → Upheaval → transportation → deposition
(c) transportation → Upheaval → weathering → deposition
(d) weathering → transportation → deposition → Upheaval
Sol. working (Permissible) stress for steel in Tension = 0.60 fy
= 0.60 ×250
= 150 N/mm²
Sol. water content (w) = 200%
Void Ratio (e) =?
→ soil is fully saturated (S = 1)
Se = WG
1×e = 2×2.6
Sol. Gneiss having highest compressive strength. The specific gravity of Gneiss is 2.69 and compressive strength is about 2100 kg/cm².
Sol. Minimum size of weld governed by thicker member.
|Thickness of thicker plate(mm)||Minimum size of weld (mm)|
Maximum size of weld is governed by thinner member.
For square edge = (Minimum thickness – 1.5mm)
For round edge = (3/4×Nominal thickness)
Sol. The probable maximum flood is more than the standard project flood.
Standard project flood= 40 to 60% of probable maximum flood.
Sol. Geological cycle for the formation of soil-
Erosion → transportation → deposition → Upheaval
→ Physical agency involved in weathering are running water, wind, ice, gravity etc. and chemical agency involved in weathering include oxidation, reduction & carbonation etc.