D45 FACE THE CHALLENGE
Quiz
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Professional Development
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Professional Development
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Practice Problem
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Medium
WINCENTRE CLASSES
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37 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A rectangular channel has width 3 m and depth 2 m. If velocity = 2 m/s, calculate discharge.
Answer explanation
Q = A × V = 3×2×2 = 12 m³/s
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calculate total dry volume of materials required for 1 m³ of concrete.
Answer explanation
Dry volume = Wet volume × 1.52 (to account for shrinkage and voids)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Assertion (A): More water in concrete mix reduces strength. Reason (R): High W/C ratio increases porosity.
Answer explanation
Higher W/C increases porosity, reducing strength.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1. In RCC, minimum cover depends on exposure condition. 2. Cover is mainly to resist shear.
Answer explanation
Cover is for protection from corrosion and fire, not for shear.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1. Plane table surveying gives real-time plotting. 2. It is suitable for large-scale detailed surveys.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The minimum diameter of main bars in slab reinforcement is:
Answer explanation
The minimum diameter of main bars in slab reinforcement as per IS 456:2000 Clause 26.5.2.2 is 8 mm for high yield strength deformed bars (HYSD) and 10 mm for plain bars.
So, for modern practice using HYSD bars (which is the most common), the minimum is 8 mm.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which dam type requires strong abutments to resist horizontal thrust?
Answer explanation
Arch dams push load to abutments — requires strong sides.
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