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Pancyprian Arch. Drawing practice questions

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Question 1Architectural and technical drawing: coordinated plans, sections and geometry

In first-angle orthographic projection (the European/ISO method used in Cyprus), where is the top view (plan) placed in relation to the front view?

  1. Directly below the front view Correct answer.
  2. Directly above the front view
  3. To the left of the front view
  4. To the right of the front view

Explanation

In first-angle projection the object lies between the observer and the plane of projection, so the horizontal plane receives the top view from underneath. When that horizontal plane is folded downward about the ground line into the sheet, the top view ends up directly below the front view.

Question 2Architectural and technical drawing: coordinated plans, sections and geometry

How many principal orthographic views can be obtained for an object?

  1. Three
  2. Six Correct answer.
  3. Four
  4. Two

Explanation

The object can be enclosed in a glass box whose six faces give six principal views: front, top (plan), right side, left side, rear, and bottom. In practice only the views needed to describe the object fully are drawn, but six principal views exist.

Question 3Architectural and technical drawing: coordinated plans, sections and geometry

The ISO projection symbol on a drawing shows a truncated cone (frustum). If the two concentric circles appear to the RIGHT of the trapezoid, which projection system does the drawing use?

  1. Third-angle projection
  2. Oblique projection
  3. First-angle projection Correct answer.
  4. Axonometric projection

Explanation

The ISO symbol is a pair of views of a frustum. In first-angle projection the view from the left side of the object is placed on the right of the front view, so the symbol with the concentric circles to the right of the trapezoid denotes first-angle projection.

Question 4Architectural and technical drawing: coordinated plans, sections and geometry

Which statement correctly defines orthographic projection?

  1. Projectors radiate from a single point, as in perspective
  2. Projectors are parallel to each other and inclined at 45 degrees to the plane
  3. The object is rotated between successive projections
  4. Projectors are parallel to each other and perpendicular to the plane of projection Correct answer.

Explanation

Orthographic projection uses projectors that are parallel to one another and strike the plane of projection at right angles. Because the observer is effectively at infinity, the views show true relationships without perspective convergence.

Question 5Architectural and technical drawing: coordinated plans, sections and geometry

In first-angle projection, the view obtained by looking at the right side of the object is placed...

  1. to the right of the front view
  2. above the front view
  3. to the left of the front view Correct answer.
  4. below the front view

Explanation

In first-angle projection each view is projected onto the plane behind the object and the box is unfolded in the opposite sense to third-angle. As a result the right-side view appears on the left of the front view, and the left-side view on the right.

Question 6Architectural and technical drawing: coordinated plans, sections and geometry

The reference line along which the vertical (frontal) plane and the horizontal plane of projection intersect is called...

  1. the ground line (XY line) Correct answer.
  2. the horizon line
  3. the centre line
  4. the cutting plane line

Explanation

The two principal planes of projection intersect in a straight line known as the ground line or XY line. All projections are related to this line: the frontal projection lies above it and, after folding, the horizontal projection lies below it.

Question 7Architectural and technical drawing: coordinated plans, sections and geometry

When choosing the front view of an object, you should select the view that...

  1. shows the greatest number of hidden lines
  2. is drawn at the largest available scale
  3. faces the nearest corner of the object
  4. shows the most characteristic shape and detail with the fewest hidden lines Correct answer.

Explanation

The front view is the principal view and should display the object's most informative and characteristic outline. Choosing the direction with the most visible detail and fewest hidden lines makes the whole drawing easier to read and dimension.

Question 8Architectural and technical drawing: coordinated plans, sections and geometry

Edges and contours that exist on the object but are not visible from the viewing direction are drawn with...

  1. continuous thick lines
  2. thin dashed (hidden) lines Correct answer.
  3. chain thin centre lines
  4. continuous thin freehand lines

Explanation

Hidden edges are represented by thin dashed lines made of short equal dashes. This lets a view show interior or rear features without a section, while distinguishing them from visible outlines.

Question 9Architectural and technical drawing: coordinated plans, sections and geometry

A solid gives a rectangular front view and a circular top view. The solid is...

  1. a cylinder with a vertical axis Correct answer.
  2. a sphere
  3. a cone with a vertical axis
  4. a cylinder with a horizontal axis

Explanation

A vertical cylinder projects as a rectangle on the frontal plane (its side profile) and as a circle on the horizontal plane (its base seen from above). This combination of rectangle plus circle is the classic signature of an upright cylinder.

Question 10Architectural and technical drawing: coordinated plans, sections and geometry

For most engineering components, how many principal views are normally drawn to describe the object completely?

  1. Always exactly two
  2. Three - typically front, top and one side view Correct answer.
  3. Always all six
  4. One, provided it is sectioned

Explanation

The usual working set is three views - front, top (plan), and a side view - which together fix length, width and height. Simpler parts may need only two views, and complex parts more, so the keyword is 'normally', not 'always'.

Question 11Architectural and technical drawing: coordinated plans, sections and geometry

An object has an inclined face whose true shape must be shown. Which additional view should be constructed?

  1. A rear view
  2. A bottom view
  3. An auxiliary view projected square off the inclined face Correct answer.
  4. A revolved section of the whole object

Explanation

An inclined surface appears foreshortened in all principal views. An auxiliary view is projected onto a plane parallel to that surface - projectors drawn perpendicular to the edge view of the face - and reveals its true shape.

Question 12Architectural and technical drawing: coordinated plans, sections and geometry

Which pairing of view placements is correct for first-angle projection?

  1. Top view above the front view; right-side view on the right
  2. Top view below the front view; right-side view on the right
  3. Top view above the front view; bottom view below
  4. Top view below the front view; bottom view above Correct answer.

Explanation

In first-angle projection every view is placed on the side opposite to the viewing direction. The top view folds down below the front view, and the bottom view (seen from underneath) folds up above the front view - a frequently confused pair.

Question 13Architectural and technical drawing: coordinated plans, sections and geometry

Which projection system is conventionally used for technical drawings in Cyprus, Greece and most of Europe (ISO practice)?

  1. Third-angle projection
  2. Oblique projection
  3. First-angle projection Correct answer.
  4. Cabinet projection

Explanation

European and ISO convention is first-angle projection, historically called the European or 'E' method. Cyprus and Greece follow this system in school and professional technical drawing, while third-angle is mainly associated with North America.

Question 14Architectural and technical drawing: coordinated plans, sections and geometry

In the Monge (descriptive geometry) system on which orthographic drawing is based, the two principal planes of projection are...

  1. the vertical (frontal) plane and the horizontal plane Correct answer.
  2. the profile plane and the picture plane only
  3. two parallel picture planes
  4. the horizon plane and the axis plane

Explanation

Monge's method projects every point onto two mutually perpendicular planes: the vertical or frontal plane (VP) and the horizontal plane (HP). Folding the horizontal plane down about the ground line produces the two-view working drawing.

Question 15Architectural and technical drawing: coordinated plans, sections and geometry

The front view of a part is a square containing two hidden vertical lines, and the top view is a square containing a visible circle. The part is most likely...

  1. a sphere enclosed in a cube
  2. a square pyramid standing on a base
  3. a solid cylinder mounted on a square base
  4. a square prism (cube) with a vertical cylindrical through-hole Correct answer.

Explanation

The square outline in both views comes from the square prism. The visible circle in the top view is the rim of a vertical hole, and the two hidden vertical lines in the front view are the unseen tangents of that cylindrical hole running through the block.

Question 16Architectural and technical drawing: coordinated plans, sections and geometry

To bring the horizontal projection plane into the same flat sheet as the frontal plane, the horizontal plane is...

  1. rotated upward through 90 degrees about the ground line
  2. rotated downward through 90 degrees about the ground line Correct answer.
  3. translated vertically downward without rotation
  4. rotated 180 degrees about a vertical axis

Explanation

Rabatment (folding) rotates the horizontal plane downward through 90 degrees about the ground line until it is coplanar with the frontal plane. This is why, in first-angle projection, the horizontal (top) projection ends up below the ground line.

Question 17Architectural and technical drawing: coordinated plans, sections and geometry

Which pairing of projection system and region of common use is correct?

  1. Third-angle projection - United States and Canada Correct answer.
  2. Third-angle projection - Germany and Greece
  3. First-angle projection - Japan only
  4. First-angle projection - United States

Explanation

Third-angle projection is the North American convention, used in the USA and Canada. Most of Europe and Asia - including Greece, Cyprus, Germany and Japan - use first-angle projection.

Question 18Architectural and technical drawing: coordinated plans, sections and geometry

The orthographic view of a sphere, taken from any direction, is always...

  1. an ellipse
  2. a circle Correct answer.
  3. a rectangle
  4. a circular sector

Explanation

A sphere has the same silhouette from every direction: a circle of the sphere's true diameter. This is why a single view plus a diameter dimension fully defines a sphere.

Question 19Architectural and technical drawing: coordinated plans, sections and geometry

A straight line segment is parallel to both the frontal and the horizontal projection planes. Its projections...

  1. appear as points on both planes
  2. are foreshortened on both planes
  3. appear in true length on both planes, parallel to the ground line Correct answer.
  4. appear in true length on the frontal plane only

Explanation

A line parallel to a projection plane projects onto it in true length. Being parallel to both principal planes, the line shows its true length in both views, and both projections run parallel to the ground line.

Question 20Architectural and technical drawing: coordinated plans, sections and geometry

Why is orthographic projection preferred to perspective for working (construction) drawings?

  1. It looks more realistic to the client
  2. It is faster to sketch freehand
  3. It requires no line-type standards
  4. True sizes and shapes can be measured and dimensioned directly from the views Correct answer.

Explanation

Working drawings exist to communicate exact size, and orthographic views preserve true lengths, angles and shapes on faces parallel to the projection planes. Perspective converges parallel lines and distorts size with depth, so it cannot be scaled or dimensioned reliably.

Question 21Architectural and technical drawing: coordinated plans, sections and geometry

In third-angle projection, the top view is placed...

  1. below the front view
  2. to the left of the front view
  3. above the front view Correct answer.
  4. on a separate sheet in every case

Explanation

In third-angle projection the projection plane lies between the observer and the object, like a glass pane in front of it. Unfolding the box places the top view directly above the front view - the opposite of first-angle practice.

Question 22Architectural and technical drawing: coordinated plans, sections and geometry

A flat plate of uniform thickness is cut to an L shape, and the front view shows the complete L profile. What is the minimum total number of orthographic views needed to define the part fully?

  1. Two - the front view plus one view showing the thickness Correct answer.
  2. Three - front, top and side views are always compulsory
  3. One - the front view alone always suffices
  4. Four - including at least one section

Explanation

The front view fixes the complete L profile. Only the plate's constant thickness remains unknown, and any single additional view (top or side) supplies it, so two views fully define the part. Drawing three views out of habit wastes effort and adds no information.

Question 23Architectural and technical drawing: coordinated plans, sections and geometry

A sectional view is produced by...

  1. photographing the interior of the finished object
  2. drawing the object with thicker outlines throughout
  3. deleting all hidden lines from an ordinary view
  4. imagining the object cut by a cutting plane, removing the part between the viewer and the plane, and projecting what remains Correct answer.

Explanation

A section is a conceptual cut: the cutting plane slices the object, the nearer portion is imagined removed, and the cut faces plus features beyond the plane are projected. Cut solid material is then hatched to make the section readable.

Question 24Architectural and technical drawing: coordinated plans, sections and geometry

Section lining (hatching) for a single part is normally drawn as...

  1. thick horizontal lines
  2. thin continuous lines at 45 degrees to the main outlines Correct answer.
  3. thick lines at 30 degrees
  4. random freehand scribbles

Explanation

Standard hatching uses thin continuous lines, usually at 45 degrees to the principal outlines or axes of the part, evenly spaced according to the area size. Adjacent parts in an assembly are hatched at different angles or spacings.

Question 25Architectural and technical drawing: coordinated plans, sections and geometry

A cutting plane line indicating where a section is taken is drawn as...

  1. a chain thin line, thick at the ends and at changes of direction, with arrows showing the viewing direction Correct answer.
  2. a continuous thick line with no arrows
  3. an ordinary hidden line with letters at both ends
  4. a wavy freehand line

Explanation

The cutting plane is shown by a chain thin line whose ends and direction changes are drawn thick, carrying arrows that point in the direction of sight for the section. Reference letters (e.g., A-A) link the cutting plane to its section view.

Question 26Architectural and technical drawing: coordinated plans, sections and geometry

Ribs (webs), spokes, shafts, bolts and similar features are NOT section-lined when the cutting plane cuts them...

  1. transversely (across their axis)
  2. longitudinally (along their axis) Correct answer.
  3. at 45 degrees to their axis
  4. in a half section only

Explanation

Convention exempts ribs, spokes, shafts and fasteners from hatching when they are cut longitudinally. Hatching them would give a false impression of thickness and solidity; they are only hatched when the cutting plane crosses them.

Question 27Architectural and technical drawing: coordinated plans, sections and geometry

A building elevation is...

  1. a horizontal cut through the building
  2. a vertical cut through the building
  3. an orthographic exterior view of one face (facade) of the building Correct answer.
  4. a three-dimensional sketch of the building

Explanation

An elevation is an orthographic projection of an exterior face of the building onto a vertical plane. It shows heights, openings and finishes of the facade but no cut material - that is the role of a section.

Question 28Architectural and technical drawing: coordinated plans, sections and geometry

On a floor plan, the position and viewing direction of a building section are shown by...

  1. the north arrow
  2. a note in the title block only
  3. a grid of dotted lines
  4. a cutting plane line with arrows and reference letters such as A-A Correct answer.

Explanation

Sections are located on plans by a cutting plane line crossing the building, with arrows at its ends pointing towards the part being viewed and letters (A-A, B-B) that label the corresponding section drawing.

Question 29Architectural and technical drawing: coordinated plans, sections and geometry

A half section is most appropriate for...

  1. asymmetric castings
  2. long shafts and bars
  3. symmetric objects, showing one half as an exterior view and the other half in section, separated by a centre line Correct answer.
  4. objects with no interior features

Explanation

A half section removes one quarter of a symmetric object, so half the view shows the outside and half shows the interior, divided by a centre line. It exploits symmetry to convey exterior and interior in a single view.

Question 30Architectural and technical drawing: coordinated plans, sections and geometry

A vertical section cut across the shorter dimension of a building is called...

  1. a transverse (cross) section Correct answer.
  2. a longitudinal section
  3. a site plan
  4. a roof plan

Explanation

A transverse or cross-section cuts across the building's width, perpendicular to its long axis. A cut along the long axis is a longitudinal section; plans are horizontal cuts, not vertical ones.

Question 31Architectural and technical drawing: coordinated plans, sections and geometry

In an assembly section, the same part hatched in several views must be hatched...

  1. with a different angle in every view
  2. with thicker lines than all other parts
  3. without hatching if it is large
  4. with the same angle and spacing everywhere, while adjacent parts use a different angle or spacing Correct answer.

Explanation

Consistency identifies the part: one component keeps identical hatching angle and spacing across all views. Neighbouring components are hatched at contrasting angles or spacings so the boundary between parts reads clearly.

Question 32Architectural and technical drawing: coordinated plans, sections and geometry

A removed section is...

  1. a section that has been deleted from the drawing
  2. a cross-section drawn away from the main view, at another convenient place on the sheet Correct answer.
  3. a section sketched before the cutting plane is chosen
  4. a detail redrawn at a smaller scale

Explanation

A removed section takes a cross-section (typically of a bar, beam or moulding) and draws it elsewhere on the sheet, often at a larger scale, rather than superimposed on the view. It is labelled with the cutting plane reference.

Question 33Architectural and technical drawing: coordinated plans, sections and geometry

A revolved section is produced by...

  1. rotating the cross-section 90 degrees about a centre line and drawing it superimposed on the view Correct answer.
  2. drawing the section on separate tracing paper
  3. revolving the whole object through 45 degrees
  4. offsetting the cutting plane through a series of holes

Explanation

In a revolved section the cross-section of a bar, spoke or arm is imagined rotated 90 degrees about a centre line at the cut location and drawn directly on top of the view. This shows the profile without an extra view.

Question 34Architectural and technical drawing: coordinated plans, sections and geometry

In an offset section, the cutting plane is bent to pass through features that are not in line. In the resulting section view, the bends (offsets) of the cutting plane...

  1. are drawn with thick lines across the section
  2. are not shown; the features are projected into one plane as if they were aligned Correct answer.
  3. are shown as hidden lines
  4. must each be labelled with a separate letter

Explanation

An offset section straightens a bent cutting plane into a single imaginary plane. All the cut features are projected as though they lay in line, and the bends themselves are deliberately omitted from the section view to keep it clear.

Question 35Architectural and technical drawing: coordinated plans, sections and geometry

In an architectural section drawing, hatching (or solid fill at small scales) is applied to...

  1. everything visible beyond the cutting plane
  2. only the roof surfaces
  3. the solid building elements actually cut by the cutting plane, such as walls, slabs and foundations Correct answer.
  4. the furniture and fittings only

Explanation

Only material physically sliced by the cutting plane - walls, floor and roof slabs, foundations, stairs - is hatched or filled. Elements seen beyond the plane (doors, windows, furniture, far walls) are drawn in outline as in an elevation.

Question 36Architectural and technical drawing: coordinated plans, sections and geometry

Architectural elevations are commonly named after...

  1. the architect who drew them
  2. the drawing sheet number
  3. the scale at which they are drawn
  4. the compass direction the face looks towards (e.g., south elevation) Correct answer.

Explanation

Elevations take the name of the direction the facade faces - south elevation, north elevation and so on - read from the orientation of the plans with the north arrow. This links each elevation unambiguously to the plan.

Question 37Architectural and technical drawing: coordinated plans, sections and geometry

In architectural drawings, concrete cut in section is conventionally represented by...

  1. parallel 45-degree brick courses
  2. horizontal wood grain lines
  3. irregular small triangles combined with dots (stippling) Correct answer.
  4. blank space with no marking at all

Explanation

The conventional symbol for concrete in section combines small irregularly placed triangles (representing aggregate) with stippled dots. Brickwork uses diagonal or coursed hatching and timber uses grain arcs, so each material reads distinctly.

Question 38Architectural and technical drawing: coordinated plans, sections and geometry

Hidden lines in a sectional view are usually...

  1. omitted, because the section already reveals the interior Correct answer.
  2. drawn thicker than the visible lines
  3. coloured so they stand out
  4. doubled in number for clarity

Explanation

The purpose of a section is to expose interior features as visible outlines, so hidden lines become unnecessary clutter and are generally omitted. They are kept only where essential to understand a feature not cut by the plane.

Question 39Architectural and technical drawing: coordinated plans, sections and geometry

A wall 5 m long is drawn at a scale of 1:100. Its length on the drawing is...

  1. 5 mm
  2. 20 mm
  3. 500 mm
  4. 50 mm Correct answer.

Explanation

At 1:100 the drawn length is the real length divided by 100. Converting 5 m to 5000 mm and dividing by 100 gives 50 mm on the drawing.

Question 40Architectural and technical drawing: coordinated plans, sections and geometry

At a scale of 1:50, a line measuring 20 mm on the drawing represents a real length of...

  1. 100 mm
  2. 1 000 mm (1 m) Correct answer.
  3. 2.5 m
  4. 10 m

Explanation

Real size equals drawn size times the scale factor: 20 mm x 50 = 1000 mm, which is 1 metre. Scaling up from paper to reality always multiplies by the second figure of the scale.

Question 41Architectural and technical drawing: coordinated plans, sections and geometry

On a 1:100 floor plan, a room measures 42 mm x 35 mm on the paper. Its real dimensions are...

  1. 4.2 m x 3.5 m Correct answer.
  2. 0.42 m x 0.35 m
  3. 42 m x 35 m
  4. 4.2 m x 35 m

Explanation

Multiply each paper dimension by 100: 42 mm becomes 4200 mm = 4.2 m, and 35 mm becomes 3500 mm = 3.5 m. Both dimensions must be scaled by the same factor.

Question 42Architectural and technical drawing: coordinated plans, sections and geometry

Which of the following is a reduction scale?

  1. 2:1
  2. 1:20 Correct answer.
  3. 1:1
  4. 5:1

Explanation

A reduction scale makes the drawing smaller than the object, written as 1:n. At 1:20 one unit on paper represents twenty in reality, so the drawing is twenty times smaller - appropriate for building details.

Question 43Architectural and technical drawing: coordinated plans, sections and geometry

Under ISO drawing practice, dimensions on technical drawings are normally given in...

  1. centimetres, writing 'cm' after every number
  2. inches with the double-prime symbol
  3. millimetres, without writing the unit Correct answer.
  4. metres to three decimal places

Explanation

ISO convention makes the millimetre the default unit, so no unit symbol is written next to each figure; a note in the title block states that dimensions are in millimetres. This keeps drawings uncluttered and avoids unit ambiguity.

Question 44Architectural and technical drawing: coordinated plans, sections and geometry

On a 1:500 site plan, a plot frontage of 60 m is drawn...

  1. 12 mm long
  2. 30 mm long
  3. 83 mm long
  4. 120 mm long Correct answer.

Explanation

Convert 60 m to 60 000 mm and divide by 500: the frontage is drawn 120 mm long. Site plans use large reduction scales such as 1:500 or 1:1000 because of the distances involved.

Question 45Architectural and technical drawing: coordinated plans, sections and geometry

Dimension lines should be drawn as...

  1. thick continuous lines
  2. chain thin lines
  3. thin continuous lines with arrowheads (or slant ticks) at each end and the figure placed above the line Correct answer.
  4. dashed lines with the figure inside a gap

Explanation

A dimension line is a thin continuous line terminated by arrowheads (or, in architectural practice, 45-degree slant ticks) touching the extension lines. The dimension figure is written above the line, clear of it.

Question 46Architectural and technical drawing: coordinated plans, sections and geometry

Extension (projection) lines in dimensioning...

  1. are thin lines that start with a small gap from the outline and extend slightly beyond the dimension line Correct answer.
  2. must touch the outline and stop exactly at the dimension line
  3. are always drawn at 45 degrees to the outline
  4. are thick lines perpendicular to the hatching

Explanation

Extension lines are thin continuous lines that begin just clear of the feature's outline (a small gap of about 2 mm) and run a little past the dimension line. The gap prevents confusion between the object and its dimensioning.

Question 47Architectural and technical drawing: coordinated plans, sections and geometry

A small detail is drawn at the enlargement scale 2:1. A feature that is 7.5 mm in reality is drawn...

  1. 3.75 mm
  2. 7.5 mm
  3. 10 mm
  4. 15 mm Correct answer.

Explanation

At 2:1 the drawing is twice the real size, so 7.5 mm x 2 = 15 mm. Enlargement scales (n:1) are used for small parts or fine detail that would be unreadable at full size.

Question 48Architectural and technical drawing: coordinated plans, sections and geometry

The symbol placed before a dimension figure to indicate a diameter is...

  1. R
  2. a circle with a slash (diameter sign) Correct answer.
  3. SQ
  4. SR

Explanation

The diameter sign (a circle crossed by a slash) precedes the figure when dimensioning a circle or cylindrical feature. R denotes radius, SQ or the square symbol denotes a square feature, and SR denotes a spherical radius.

Question 49Architectural and technical drawing: coordinated plans, sections and geometry

Running (datum) dimensioning, in which all dimensions are measured from one common datum edge, is preferred over chain dimensioning mainly because...

  1. it avoids the accumulation of errors that chain dimensioning produces Correct answer.
  2. it uses fewer extension lines
  3. it requires larger lettering
  4. it eliminates the need for tolerances

Explanation

In chain dimensioning each feature is located from the previous one, so manufacturing errors add up along the chain. Measuring every position from a single datum means each dimension carries only its own error, which is critical in construction setting-out.

Question 50Architectural and technical drawing: coordinated plans, sections and geometry

The A-series of drawing sheets is based on A0 having an area of 1 square metre with sides in the ratio 1:square root of 2. The area of an A1 sheet is therefore...

  1. 1 square metre
  2. 0.5 square metre Correct answer.
  3. 0.25 square metre
  4. 2 square metres

Explanation

Each step down the A-series halves the area by folding along the longer side, which is why the 1:root-2 ratio is preserved. A1 = 1 m² / 2 = 0.5 m²; A2 = 0.25 m² and so on.