
FRIDAY WEEKLY EXAM (13/06/2025)
Authored by WINCENTRE CLASSES
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University
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100 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The area of a trapezium with parallel sides 12 m and 8 m, and height 6 m is:
Answer explanation
Area = ½ × (12 + 8) × 6 = 60 m²
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A rectangular beam 300 mm wide and 500 mm deep has a moment of inertia about its base equal to:
Answer explanation
I = (b × h³)/3 = (300 × 500³)/3 = 3.125 × 10⁸ mm⁴
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A steel bar of 20 mm diameter and 2 m length is subjected to a tensile force of 20 kN. If E = 2×10⁵ N/mm², the elongation is:
Answer explanation
Stress = 20000 / (π/4 × 20²) ≈ 63.66 N/mm²; Elongation = (63.66 / 200000) × 2000 ≈ 0.64 mm
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The volume of a circular slab of 2.5 m diameter and 0.15 m thick is:
Answer explanation
Volume = π/4 × D² × h = π/4 × 2.5² × 0.15 ≈ 0.736 m³
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A cement bag weighs 50 kg. What is the volume of cement in m³? (Specific gravity of cement = 3.15)
Answer explanation
Volume = Mass / (SG × 1000) = 50 / (3.15 × 1000) ≈ 0.016 m³
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The bearing of a line is N 30° E. Its back bearing is:
Answer explanation
Back bearing of N 30° E is S 30° W
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A beam 6 m long is simply supported and loaded at the center with a 12 kN load. What is the maximum bending moment?
Answer explanation
M = (W × L)/4 = (12 × 6)/4 = 18 kNm
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