Quiz in Basic Mathematics

Evaluate yourself with our basic math problems for engineering. Each problem are carefully selected so that every item in this quiz can be answered by basic principle if not by common sense.
 

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MATHalino Now Offers Online Courses

No, this is not an announcement or promotional post. This is about my experience in building the platform for online courses.

 

Creating an online course is monumental specially to small websites like MATHalino. Despite being manned by one person from the ground up, the development of this functionality is actually progressing by degrees. I've been conceiving this feature as far as I can recall, way before online courses become a common thing in the Philippines. What makes me unable to implement it before comes from three factors.
 

Situation
The solid pole shown in the figure is loaded with a vertical load P = 25 kN and lateral load H = 0.95 kN. The pole is 3 m high, 300 mm diameter and weighs 22 kN/m3.
 

2012-may-design-pole-under-combined-loadings.png

 

Problem
The area of a park on a map is 600 mm2. If the scale of the map is 1 to 40,000 determine the true area of the park in hectares (1 hectare = 104 m2).

A.   112 C.   96
B.   84 D.   120

 

Situation
The three-hinged arch shown below is loaded with symmetrically placed concentrated loads as shown in the figure below.
 

2015-may-design-three-hinged-arch-given.png

 

The loads are as follows:
$$P_1 = 90 ~ \text{kN} \qquad P_2 = 240 ~ \text{kN}$$
 

The dimensions are:
$$H = 8 ~ \text{m} \qquad S = 4 ~ \text{kN}$$
 

Calculate the following:
 

1.   The horizontal reaction at A.

A.   0 C.   330 kN
B.   285 kN D.   436 kN

2.   The total reaction at B.

A.   0 C.   330 kN
B.   285 kN D.   436 kN

3.   The vertical reaction at C.

A.   0 C.   330 kN
B.   285 kN D.   436 kN

 

Problem
Evaluate $\displaystyle \int_0^1 \dfrac{x \, dx}{x^2 + 2}$.

A.   0.2027 C.   0.2270
B.   0.2207 D.   0.2072

 

Problem
Determine the radius of curvature of the curve $x = y^3$ at point (1, 1).

A.   5.27 C.   5.56
B.   5.65 D.   5.72

 

Problem
Calculate the area enclosed by the curve $x^2 + y^2 - 10x + 4y - 196 = 0$.

A.   15π C.   169π
B.   13π D.   225π

 

Problem
The first three terms of a geometric progression are 2x, 4x + 14 and 20x - 14. Find the sum of the first ten terms.

A.   413,633 C.   489,335
B.   498,533 D.   431,336

 

Problem
A 50-m steel tape that is is 0.02 m too long was used to measure the distance between two points A and B. If the measured distance was 160.42 m, calculate the correct distance between A and B.

A.   160.356 m C.   160.844 m
B.   160.484 m D.   160.563 m

 

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