EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2026 |INSTANT
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1. What is the derivative of f(x)=3x2+2x+1f(x) = 3x^2 + 2x +
1f(x)=3x2+2x+1?
A. 6x+26x + 26x+2
B. 3x+23x + 23x+2
C. 6x6x6x
D. 2x+12x + 12x+1
Correct Answer: A. 6x+26x + 26x+2
Rationale:
Using basic differentiation rules, the derivative of 3x23x^23x2 is
6x6x6x, the derivative of 2x2x2x is 2, and the derivative of a
constant is 0.
2. Which law states that voltage equals current multiplied by
resistance?
A. Faraday’s Law
B. Kirchhoff’s Law
C. Ohm’s Law
D. Coulomb’s Law
Correct Answer: C. Ohm’s Law
,Rationale:
Ohm’s Law describes the relationship between voltage (V),
current (I), and resistance (R).
V=IRV = IRV=IR
III
RRR
V=IR=12V = IR = 12V=IR=12
3. What is the SI unit of force?
A. Joule
B. Watt
C. Pascal
D. Newton
Correct Answer: D. Newton
Rationale:
Force is measured in Newtons (N), defined as
1 N=1 kg⋅m/s21\,N = 1\,kg·m/s^21N=1kg⋅m/s2.
4. Which property describes a material’s resistance to
deformation?
,A. Conductivity
B. Elasticity
C. Viscosity
D. Permeability
Correct Answer: B. Elasticity
Rationale:
Elasticity refers to the ability of a material to return to its
original shape after stress is removed.
5. Which engineering principle states that energy cannot be
created or destroyed?
A. Second Law of Thermodynamics
B. First Law of Thermodynamics
C. Bernoulli Principle
D. Hooke’s Law
Correct Answer: B. First Law of Thermodynamics
Rationale:
This law represents conservation of energy within a system.
6. What is the slope of the line passing through points (2,4)
and (6,12)?
A. 1
B. 2
, C. 2
D. 3
Correct Answer: C. 2
Rationale:
Slope formula:
m=y2−y1x2−x1m = \frac{y_2 - y_1}{x_2 - x_1}m=x2−x1y2−y1
-10-8-6-4-2246810-10-5510-8.00, -8.008.00, 8.00m = 1.00
(12−4)/(6−2)=8/4=2(12 - 4)/(6 - 2) = 8/4 = 2(12−4)/(6−2)=8/4=2
7. Which type of stress occurs when forces act parallel to the
surface?
A. Tensile Stress
B. Compressive Stress
C. Shear Stress
D. Thermal Stress
Correct Answer: C. Shear Stress
Rationale:
Shear stress results when forces cause layers of material to
slide relative to each other.
8. In statistics, what does the standard deviation measure?
A. Average value
B. Maximum error