Agricultural and Biosystems Engineers Licensure Examination (ABELE) · Philippines · Professional Regulatory Board of Agricultural and Biosystems Engineering, PRC
Original practice questions written to the published syllabus · not past papersReading and making drawings of machine parts and buildings, by hand and in CAD.
In the exams: NCEES PE graphics/CAD/GIS topic; design drawings in PRC ABE
Agricultural and Biosystems Engineers Licensure Examination (ABELE)
Design drawings of agricultural structures and machines within the structures and machinery subjects: reading plans, elevations and sections of farm buildings, scales and areas from plans, developments of sheet-metal parts such as hoppers and ducts, fasteners and welds on implements, and the drawing requirements that accompany design and test submissions under national agricultural engineering standards.
How our questions for Agricultural and Biosystems Engineers Licensure Examination spread across the units of Engineering Drawing, Graphics & CAD. Difficulty: 36 easy, 62 medium, 33 hard.
| Orthographic projection | 26 | |
| Dimensioning and tolerances | 22 | |
| Sectional views | 15 | |
| Fasteners and their drawing | 13 | |
| 2D and 3D CAD modelling | 13 | |
| Geometric dimensioning and tolerancing basics | 11 | |
| Building plans and elevations | 11 | |
| Isometric projection | 10 | |
| Assembly drawings of farm-machine parts | 10 |
Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.
Which line type does ISO 128 assign to hidden edges and outlines?
D. Dashed thin line
Hidden outlines are dashed thin. Continuous thin is for dimension, extension and hatching lines; long-dash dotted thin is for centre lines and axes; continuous thick is for visible outlines.
What is the area of an A0 drawing sheet, and how does the next size A1 relate to it?
C. 1 m²; A1 is half the area with the same side ratio of 1:√2
A0 is 841 × 1189 mm ≈ 1 m². Halving across the long side gives A1 (594 × 841), keeping the 1:√2 ratio. A quarter of the area with half-length sides is A2, two steps down. 2 m² is the 2A0 size.
The top view of a straight line AB measures 60 mm, and in the front view end B is 45 mm higher than end A. What are the true length of AB and its inclination θ to the HP?
B. 75 mm and 36.87°
The top view is TL cos θ and the height difference is TL sin θ, so TL = √(60² + 45²) = 75 mm and θ = sin⁻¹(45/75) = 36.87°. Adding the lengths (105) ignores the right angle; 53.13° is the complement, the angle with the vertical; subtracting squares gives 39.7 mm, a sign slip.
In the ISO system of limits and fits, what is special about a hole designated H?
D. Its lower deviation is zero, so its smallest size equals the nominal size
H holes have zero lower deviation; this is the basis of the hole-basis system. Zero upper deviation describes an h shaft. The letter fixes the position of the zone, not its width (the IT grade does that), and the fit depends on the shaft letter.
A symmetrical cast flange is to be shown with one half in section and the other half in outside view. What is this type of section called?
D. Half section
A half section suits symmetrical parts: interior and exterior shown at once, divided by a centre line. An offset section steps the cutting plane; a revolved section is rotated in place; a broken-out section exposes a small local area within a freehand boundary.
What is the difference between an isometric projection and an isometric drawing of the same object?
A. Same shape; the drawing uses true lengths and is about 22% larger than the projection
Both use the same axes; the projection reduces lengths by 0.816, while the drawing uses full lengths and is 1/0.816 = 1.225 times (about 22%) larger. Axes at 45° belong to oblique views; circles are ellipses in both.
Which file format represents a 3D model as a mesh of triangles, typically used for 3D printing?
C. STL
STL approximates surfaces with triangles and is the common input to 3D printers. STEP and IGES carry exact geometry between CAD systems; DXF is a 2D drawing exchange format.
An isometric drawing of a block 80 × 50 × 30 mm is started by drawing an enclosing box. What are the lengths drawn along the three isometric axes in an isometric drawing (not projection)?
A. 80, 50 and 30 mm
An isometric drawing uses true lengths on the axes. Multiplying by 0.816 gives the isometric projection; halving one length belongs to cabinet oblique; dividing by 0.816 enlarges it twice over. Dividing by 0.816 gives 98.0, 61.2 and 36.7 mm; multiplying gives 65.3, 40.8 and 24.5 mm; halving the depth gives 80, 25 and 30 mm.
Under the common convention that names an elevation after the face of the building it shows, what does the 'north elevation' show?
A. It shows the face of the building that faces north, viewed from the north
Elevations named by orientation describe the face shown: the north elevation is the north-facing face, seen from the north. Sun exposure depends on hemisphere and is not what the name means.
An implement frame drawing is plotted from a layout viewport set to 1:20. A beam that is 3.6 m long in the model will measure how long on paper?
B. 180 mm
3600 mm / 20 = 180 mm. 18 mm is a factor-of-ten slip; 72 mm divides by 50; 1800 mm divides by 2.
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