AND CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2026 Q&A | INSTANT
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1. What is the SI unit of force?
A. Joule
B. Pascal
C. Newton
D. Watt
Newton is defined as kg·m/s², the SI unit of force.
2. A vector with magnitude 10 acts at 30° above the horizontal.
What is its horizontal component?
A. 10
B. 5
C. 8.66
D. 3
Horizontal component = 10 cos 30°.
3. The area under a velocity–time graph represents:
A. Acceleration
B. Momentum
C. Displacement
D. Force
Area under v–t curve gives displacement.
4. What type of stress occurs due to twisting?
A. Normal
, B. Bending
C. Axial
D. Shear
Torsion produces shear stress.
5. The centroid of a rectangle is located at:
A. One-third height
B. One-quarter width
C. Midpoint of width and height
D. At the base
Centroid lies at the geometric center.
6. Poisson’s ratio is the ratio of:
A. Stress to strain
B. Shear to normal stress
C. Lateral strain to longitudinal strain
D. Volume change to pressure
It measures transverse deformation.
7. Which soil has the highest permeability?
A. Clay
B. Silt
C. Gravel
D. Loam
Coarser soils allow more flow.
8. What does a factor of safety greater than 1 indicate?
A. Failure
B. Instability
C. Safe design
D. Overloading
Values above 1 indicate resistance exceeds load.
, 9. In beam bending, maximum stress occurs at the:
A. Neutral axis
B. Center
C. Extreme fibers
D. Supports
Stress increases with distance from neutral axis.
10. The unit weight of water is approximately:
A. 1 kN/m³
B. 4.9 kN/m³
C. 9.81 kN/m³
D. 19.6 kN/m³
Standard engineering value.
11. Which test determines concrete compressive strength?
A. Slump test
B. Cylinder test
C. Sieve analysis
D. Proctor test
Compressive strength is measured by crushing cylinders.
12. Darcy’s law applies to:
A. Turbulent flow
B. Open channel flow
C. Laminar flow through porous media
D. Pipe friction
Valid for laminar groundwater flow.
13. What is the modulus of elasticity?
A. Stress × strain
B. Stress ÷ strain
C. Load × area