Engineering Drawing MCQ. Assess your understanding of Engineering Drawing with MCQs on projections, instruments, geometry, dimensioning, and CAD concepts.
Engineering Drawing MCQ – Mock Online Test
Question 1: What is the primary purpose of engineering drawing?
A. To create artistic sketches
B. To draft legal documents
C. To visually communicate engineering ideas
D. To create marketing materials
C. To visually communicate engineering ideas. Engineering drawings are used to clearly convey technical information.
Question 2: Which organization sets international standards for engineering drawings?
A. ASTM
B. ISO
C. ANSI
D. IEEE
B. ISO. The International Organization for Standardization (ISO) sets global standards for engineering drawings.
Question 3: What type of line is used to represent hidden features in engineering drawings?
A. Solid line
B. Dashed line
C. Chain line
D. Dotted line
B. Dashed line. Dashed lines indicate hidden features that are not visible in a particular view.
Question 4: In technical drawings, what is the purpose of using different line types?
A. To improve aesthetic appeal
B. To differentiate types of boundaries and features
C. To create artistic effects
D. To indicate the scale of the drawing
B. To differentiate types of boundaries and features. Different line types help represent various elements and their significance.
Question 5: Which of the following is a standard font style used in engineering drawings?
A. Times New Roman
B. Arial
C. Roman Single Stroke
D. Calibri
C. Roman Single Stroke. Engineering drawings typically use Roman Single Stroke for clarity and uniformity.
Question 6: Which tool is primarily used for drawing circles in technical drawings?
A. Ruler
B. Protractor
C. Compass
D. T-square
C. Compass. A compass is commonly used to draw circles and arcs in technical drawings.
Question 7: What is the primary purpose of a T-square in engineering drawing?
A. To draw circles
B. To measure angles
C. To draw straight lines
D. To sharpen pencils
C. To draw straight lines. T-squares are used to draw horizontal lines and help align other drawing instruments.
Question 8: Which instrument is essential for measuring and drawing angles?
A. Set square
B. Protractor
C. Compass
D. Ruler
B. Protractor. A protractor is specifically designed for measuring and drawing angles.
Question 9: What is the standard size of an A4 drawing sheet?
A. 210 x 297 mm
B. 297 x 420 mm
C. 420 x 594 mm
D. 594 x 841 mm
A. 210 x 297 mm. A4 sheets are commonly used and measure 210 x 297 mm.
Question 10: What information is typically included in the title block of an engineering drawing?
A. Color scheme
B. Designer’s name and date
C. Material specifications
D. Drawing scale and revisions
B. Designer’s name and date. The title block often contains the designer’s name, the date, and other relevant information about the drawing.
Question 11: What is the first step in constructing a polygon?
A. Measuring the angles
B. Dividing a circle
C. Drawing a base line
D. Finding the center point
C. Drawing a base line. Constructing a polygon often begins with drawing a baseline as a reference.
Question 12: When constructing an angle bisector, which tool is primarily used?
A. Compass
B. Protractor
C. Set square
D. T-square
A. Compass. A compass is commonly used to bisect angles by creating intersecting arcs.
Question 13: How many sides does a regular pentagon have?
A. 3
B. 5
C. 6
D. 8
B. 5. A pentagon has five equal sides and angles in a regular configuration.
Question 14: Which curve is generated by a point moving at a constant distance from a fixed point?
A. Ellipse
B. Circle
C. Hyperbola
D. Parabola
B. Circle. A circle is formed by a point moving at a constant distance from a central point.
Question 15: What geometric shape is formed by a right-angled cone section?
A. Ellipse
B. Parabola
C. Hyperbola
D. Circle
B. Parabola. A parabola is created when a cone is cut by a plane parallel to one of its sides.
Question 16: Which conic section is defined as the locus of all points such that the ratio of distances to a fixed point and a fixed line is constant?
A. Circle
B. Ellipse
C. Parabola
D. Hyperbola
C. Parabola. This definition describes a parabola, where the constant ratio is 1.
Question 17: What is the purpose of constructing tangents in engineering drawings?
A. To represent parallel lines
B. To show intersecting lines
C. To indicate curve transitions
D. To separate sections
C. To indicate curve transitions. Tangents help in smoothly connecting different curves in engineering drawings.
Question 18: How is a hyperbola generated in conic sections?
A. By cutting a cone parallel to its base
B. By cutting a cone perpendicular to its base
C. By cutting a cone parallel to its side
D. By cutting a cone at an angle to both its base and side
D. By cutting a cone at an angle to both its base and side. This creates two separate curves called hyperbolas.
Question 19: Which tool would you use to construct an ellipse?
A. Compass only
B. French curve only
C. Compass and string
D. Ellipsograph
D. Ellipsograph. An ellipsograph is a tool designed to accurately draw ellipses.
Question 20: What is the sum of all internal angles in a hexagon?
A. 360 degrees
B. 540 degrees
C. 720 degrees
D. 1080 degrees
C. 720 degrees. The sum of internal angles in a hexagon is calculated as (6-2) × 180 = 720 degrees.
Question 21: Which projection method uses two main angles for view orientation?
A. Oblique
B. Orthographic
C. Perspective
D. Isometric
B. Orthographic. Orthographic projection uses two main types: first-angle and third-angle projections.
Question 22: In first-angle projection, where is the top view placed?
A. Above the front view
B. Below the front view
C. Next to the front view on the right
D. Next to the front view on the left
B. Below the front view. In first-angle projection, the top view is placed below the front view.
Question 23: Which of the following best represents the purpose of orthographic projection?
A. To provide a 3D view of an object
B. To depict an object from multiple perspectives
C. To show the object in one dimension
D. To create a realistic rendering of the object
B. To depict an object from multiple perspectives. Orthographic projection shows different views (front, top, side) for accuracy.
Question 24: In third-angle projection, where is the right-side view located?
A. To the right of the front view
B. To the left of the front view
C. Below the top view
D. Above the top view
A. To the right of the front view. In third-angle projection, the right-side view is placed to the right of the front view.
Question 25: What type of view is used to show an object’s internal details?
A. Isometric view
B. Auxiliary view
C. Sectional view
D. Perspective view
C. Sectional view. Sectional views reveal internal features by cutting through an object.
Question 26: Which line is used to represent the cutting plane in sectional views?
A. Hidden line
B. Centerline
C. Break line
D. Cutting plane line
D. Cutting plane line. Cutting plane lines show where the object is ‘cut’ to reveal internal details.
Question 27: What is the key difference between first-angle and third-angle projections?
A. Number of views used
B. Placement of views
C. Method of dimensioning
D. Scale used
B. Placement of views. First-angle projection places views differently from third-angle projection.
Question 28: In orthographic projection, which view typically shows the most detail?
A. Top view
B. Side view
C. Front view
D. Isometric view
C. Front view. The front view generally contains the most comprehensive details of the object.
Question 29: Which of the following sections cuts the object completely in half?
A. Partial section
B. Half section
C. Full section
D. Offset section
C. Full section. A full section cuts the object entirely to show all internal details.
Question 30: What is the main purpose of hatching in sectional views?
A. To improve the visual appeal
B. To differentiate the material of the object
C. To indicate the direction of the cut
D. To show the type of projection
C. To indicate the direction of the cut. Hatching represents areas where material is cut.
Question 31: Which projection is commonly used to provide a three-dimensional view without perspective distortion?
A. Orthographic
B. Isometric
C. Oblique
D. Perspective
B. Isometric. Isometric projection shows a 3D view without perspective distortion, using equal angles for the axes.
Question 32: In isometric projection, the angles between the projection axes are typically:
A. 30 degrees
B. 45 degrees
C. 60 degrees
D. 90 degrees
A. 30 degrees. In isometric projection, the angles between the projection axes are each 120 degrees, but the drawing is angled at 30 degrees from the horizontal.
Question 33: What is the purpose of an isometric scale?
A. To enlarge objects
B. To reduce objects
C. To maintain true dimensions along the axes
D. To change the angle of projection
C. To maintain true dimensions along the axes. An isometric scale ensures that dimensions are proportionally correct in isometric projection.
Question 34: Which type of axonometric projection has different scales along its three axes?
A. Isometric
B. Dimetric
C. Trimetric
D. Orthographic
C. Trimetric. Trimetric projection uses different scales for each axis, making it less uniform but allowing more realistic depth representation.
Question 35: In a dimetric projection, how many axes share the same scale?
A. None
B. One
C. Two
D. Three
C. Two. In dimetric projection, two axes share the same scale, while the third axis uses a different scale.
Question 36: When converting orthographic views to isometric, what happens to the circular shapes?
A. They become squares
B. They remain circles
C. They become ellipses
D. They are removed
C. They become ellipses. Circles appear as ellipses in isometric projection due to the angle of view.
Question 37: Which projection is commonly used for technical illustrations due to its realistic appearance?
A. Dimetric
B. Isometric
C. Trimetric
D. Oblique
A. Dimetric. Dimetric projection, with two equal angles, provides a realistic yet simplified 3D representation.
Question 38: What is a major advantage of using isometric projection in engineering drawings?
A. It uses fewer views than orthographic projection
B. It eliminates the need for measurements
C. It allows direct comparison to photographs
D. It provides a realistic 3D view
D. It provides a realistic 3D view. Isometric projection visually represents an object in 3D, making it easier to understand.
Question 39: In a one-point perspective drawing, how many vanishing points are used?
A. One
B. Two
C. Three
D. Four
A. One. One-point perspective uses a single vanishing point to create depth.
Question 40: Which type of projection uses parallel lines and is often used for technical drawings of buildings?
A. Oblique
B. Perspective
C. Isometric
D. Orthographic
A. Oblique. Oblique projection uses parallel lines to create 3D depth and is often used in architectural drawings.
Question 41: In a two-point perspective drawing, the vanishing points are located:
A. On the same side of the object
B. At the same point
C. On opposite sides of the object
D. Directly above the object
C. On opposite sides of the object. Two-point perspective uses two vanishing points, typically on opposite sides of the object.
Question 42: What type of oblique projection has a 45-degree angle and shows depth at full scale?
A. Cabinet
B. Cavalier
C. Isometric
D. Dimetric
B. Cavalier. Cavalier projection uses a 45-degree angle and shows depth at full scale, making it look distorted.
Question 43: Which oblique projection reduces the depth scale to make the object appear more realistic?
A. Cavalier
B. Cabinet
C. Isometric
D. Trimetric
B. Cabinet. Cabinet projection uses a 45-degree angle but reduces the depth scale to improve realism.
Question 44: What is an exploded view commonly used for?
A. To show the finished appearance of an object
B. To illustrate assembly instructions
C. To create a realistic image of an object
D. To make the object appear larger
B. To illustrate assembly instructions. Exploded views show how components fit together.
Question 45: Which perspective drawing technique uses three vanishing points to create a sense of height?
A. One-point perspective
B. Two-point perspective
C. Three-point perspective
D. Oblique perspective
C. Three-point perspective. Three-point perspective adds a third vanishing point for height.
Question 46: Which section type only cuts through part of an object?
A. Full section
B. Half section
C. Offset section
D. Partial section
D. Partial section. A partial section only cuts through part of an object to reveal specific details.
Question 47: Which section is used to show the symmetrical interior of an object?
A. Full section
B. Half section
C. Offset section
D. Partial section
B. Half section. Half sections are used to display symmetrical interiors, showing half the object as solid and half as cut.
Question 48: What type of section is useful for showing internal features that do not lie on a straight line?
A. Offset section
B. Full section
C. Partial section
D. Auxiliary section
A. Offset section. Offset sections are used to show features that are not aligned, by offsetting the cutting plane.
Question 49: In assembly drawings, what is typically indicated by an exploded view?
A. The final appearance of the product
B. The sequence of parts assembly
C. The exact dimensions of each part
D. The material of each component
B. The sequence of parts assembly. Exploded views help users understand how to assemble each component in sequence.
Question 50: Which view is often used to indicate complex machinery parts that interconnect?
A. Sectional view
B. Auxiliary view
C. Assembly view
D. Detail view
C. Assembly view. Assembly views show how different parts fit together in complex machinery.
Question 51: Which of the following is not typically shown in an exploded assembly drawing?
A. Internal features
B. Order of assembly
C. Relative position of parts
D. Fastening details
A. Internal features. Exploded views focus on part relationships and assembly sequence, not internal features.
Question 52: What is the purpose of using hatching in a sectional view?
A. To add color to the drawing
B. To represent hidden parts
C. To indicate cut surfaces
D. To highlight exterior features
C. To indicate cut surfaces. Hatching in sectional views shows where the object has been cut.
Question 53: In assembly drawings, which component is represented with a break line?
A. Screw
B. Shaft
C. Nut
D. Washer
B. Shaft. Break lines often represent shafts or other components too long to show in full.
Question 54: What is the primary purpose of dimensioning in engineering drawings?
A. To improve the appearance of the drawing
B. To define the size and location of features
C. To show the material of the object
D. To highlight important features
B. To define the size and location of features. Dimensioning provides essential information about the size and geometry of an object.
Question 55: Which type of dimensioning uses a common baseline or centerline for multiple dimensions?
A. Chain dimensioning
B. Parallel dimensioning
C. Baseline dimensioning
D. Unidirectional dimensioning
C. Baseline dimensioning. Baseline dimensioning uses a common baseline to measure from, reducing errors in accumulation.
Question 56: What is a unilateral tolerance?
A. A tolerance that applies in both directions
B. A tolerance that only applies in one direction
C. A tolerance for angular dimensions
D. A tolerance for diameter dimensions
B. A tolerance that only applies in one direction. Unilateral tolerances allow variation only in one direction.
Question 57: What does GD&T stand for in engineering drawings?
A. General Dimensioning and Tolerancing
B. Geometric Dimensioning and Tolerancing
C. Gradual Dimensioning and Tolerancing
D. Global Dimensioning and Tolerancing
B. Geometric Dimensioning and Tolerancing. GD&T is a system that defines and communicates engineering tolerances.
Question 58: What does the symbol Ø represent in engineering drawings?
A. Diameter
B. Radius
C. Thickness
D. Length
A. Diameter. The symbol Ø indicates the diameter of a circle or hole.
Question 59: Which type of tolerance specifies upper and lower limits of size?
A. Unilateral tolerance
B. Bilateral tolerance
C. Limit tolerance
D. Angular tolerance
C. Limit tolerance. Limit tolerance specifies both upper and lower acceptable size limits for a feature.
Question 60: Which dimensioning system allows all dimensions to be read from the bottom of the drawing?
A. Aligned system
B. Unidirectional system
C. Angular system
D. Baseline system
B. Unidirectional system. In the unidirectional system, all dimensions are written so they can be read from the bottom of the drawing.
Question 61: What is the primary advantage of using GD&T?
A. It simplifies drawings by eliminating dimensions
B. It provides precise control of form, orientation, and location
C. It increases the cost of manufacturing
D. It only applies to complex parts
B. It provides precise control of form, orientation, and location. GD&T ensures better control over manufacturing tolerances.
Question 62: In GD&T, what is the purpose of a datum?
A. To indicate the material used
B. To reference a point or surface for measurements
C. To show the scale of the drawing
D. To highlight the most important feature
B. To reference a point or surface for measurements. Datums serve as the basis for measuring other features in GD&T.
Question 63: What type of scale is used when a drawing is made smaller than the actual object?
A. Full scale
B. Reduced scale
C. Enlarged scale
D. Isometric scale
B. Reduced scale. Reduced scale is used to represent objects smaller than their actual size.
Question 64: Which of the following is used to measure very small distances accurately?
A. Vernier scale
B. Plain scale
C. Diagonal scale
D. Full scale
A. Vernier scale. A vernier scale allows for precise measurement of small distances.
Question 65: What type of curve is an involute?
A. A curve generated by a point on a straight line
B. A curve traced by a point on a circle rolling along a straight line
C. A curve created by a parabola
D. A curve traced by a point on a rotating ellipse
B. A curve traced by a point on a circle rolling along a straight line. An involute is used in gear tooth design.
Question 66: Which engineering curve is generated by a fixed point moving at a constant speed along a spiral?
A. Ellipse
B. Cycloid
C. Spiral
D. Helix
C. Spiral. A spiral is generated by a point moving at a constant speed along a curve that continually increases its distance from the center.
Question 67: Which scale is used to represent objects larger than their actual size?
A. Full scale
B. Reduced scale
C. Enlarged scale
D. Diagonal scale
C. Enlarged scale. Enlarged scales are used to represent small objects at a larger size.
Question 68: Which of the following curves is used for designing cams?
A. Involute
B. Ellipse
C. Cycloid
D. Helix
C. Cycloid. Cycloid curves are commonly used in the design of cams and gears.
Question 69: What is the purpose of using a diagonal scale in engineering drawings?
A. To increase precision in angular measurements
B. To measure larger distances
C. To measure small distances accurately
D. To create perspective drawings
C. To measure small distances accurately. Diagonal scales are used to measure minute dimensions with high precision.
Question 70: Which of the following is a permanent fastener?
A. Screw
B. Bolt
C. Rivet
D. Nut
C. Rivet. Rivets are permanent fasteners commonly used in construction and mechanical applications.
Question 71: Which type of fastener is typically used for temporary joints?
A. Bolt
B. Rivet
C. Weld
D. Adhesive
A. Bolt. Bolts are used for temporary joints because they can be removed and reused.
Question 72: What is the primary purpose of a key in mechanical assemblies?
A. To join two parts together
B. To transmit torque between a shaft and a rotating element
C. To secure a bolt in place
D. To adjust the dimensions of a component
B. To transmit torque between a shaft and a rotating element. Keys prevent relative motion between the two parts.
Question 73: What type of spring is designed to absorb shock or store energy?
A. Tension spring
B. Compression spring
C. Torsion spring
D. Leaf spring
B. Compression spring. Compression springs absorb energy and return to their original shape after being compressed.
Question 74: Which of the following is a common type of coupling?
A. Universal coupling
B. Pin joint
C. Rivet joint
D. Bolted joint
A. Universal coupling. Universal couplings allow for angular movement between two rotating shafts.
Question 75: In engineering drawings, which symbol is commonly used to represent a threaded fastener?
A. Circle
B. Dashed line
C. Spiral
D. Hexagon
D. Hexagon. A hexagon represents a bolt or nut in engineering drawings.
Question 76: What is the function of a bearing in mechanical systems?
A. To fasten two components together
B. To reduce friction between moving parts
C. To increase the speed of a rotating shaft
D. To adjust the torque of a system
B. To reduce friction between moving parts. Bearings allow for smooth rotation or linear movement in mechanical systems.
Question 77: Which type of joint is most commonly used in welding applications?
A. Rivet joint
B. Butt joint
C. Pin joint
D. Coupling joint
B. Butt joint. Butt joints are commonly used in welding to join two components end-to-end.
Question 78: What is the purpose of surface development in engineering drawings?
A. To show the hidden features of a solid
B. To represent the internal structure of a solid
C. To unfold a 3D object into a 2D layout
D. To create an exploded view of the object
C. To unfold a 3D object into a 2D layout. Surface development shows the flat layout of a 3D object for fabrication.
Question 79: Which shape is easiest to develop into a flat pattern?
A. Sphere
B. Cone
C. Cylinder
D. Pyramid
C. Cylinder. Cylinders are easier to develop because they unfold into a rectangle.
Question 80: In surface development, what is the term for the line where two surfaces meet?
A. Seam line
B. Junction line
C. Intersection line
D. Edge line
C. Intersection line. Intersection lines indicate where two surfaces intersect or meet in a developed view.
Question 81: Which technique is commonly used for developing the surfaces of prisms?
A. Triangulation
B. Rectification
C. Parallel line development
D. Radial line development
C. Parallel line development. Parallel line development is used to unfold the surfaces of prisms.
Question 82: What is the result of intersecting two cylinders at right angles?
A. A rectangular prism
B. A conical shape
C. An ellipse at the intersection
D. A spiral curve
C. An ellipse at the intersection. The intersection of two cylinders at right angles typically forms an elliptical curve.
Question 83: When developing a cone’s surface, where do the radial lines converge?
A. At the center of the base
B. At the apex of the cone
C. Along the slant height
D. At the midpoint of the height
B. At the apex of the cone. Radial lines converge at the apex when unfolding a cone’s surface.
Question 84: Which method is used for developing the surface of a sphere?
A. Parallel line development
B. Radial line development
C. Triangulation method
D. Approximation method
D. Approximation method. Spheres are often developed using an approximation due to their curved surface.
Question 85: What does CAD stand for?
A. Computer Aided Drawing
B. Computer Aided Design
C. Computerized Art Design
D. Computerized Aided Drafting
B. Computer Aided Design. CAD stands for Computer Aided Design, which is used for creating precise drawings and models.
Question 86: Which feature in CAD software is commonly used to draw perfect circles and arcs?
A. Line tool
B. Polygon tool
C. Circle tool
D. Ellipse tool
C. Circle tool. The circle tool in CAD software is used specifically to draw circles and arcs.
Question 87: What is the purpose of using layers in CAD drawings?
A. To make drawings more colorful
B. To organize different elements of the drawing
C. To reduce the file size
D. To add textures to the drawing
B. To organize different elements of the drawing. Layers help organize and separate different parts of the drawing for easier editing and viewing.
Question 88: Which CAD command is used to copy an object at a specified angle?
A. Move
B. Rotate
C. Scale
D. Trim
B. Rotate. The rotate command copies or moves an object around a specified pivot point at a given angle.
Question 89: In 3D modeling, what does the term “extrude” refer to?
A. Creating a 2D shape
B. Stretching a shape into the third dimension
C. Reducing the size of an object
D. Rotating an object around an axis
B. Stretching a shape into the third dimension. Extrusion is the process of extending a 2D shape to create a 3D object.
Question 90: What is the primary purpose of using CAD standards?
A. To improve file compatibility
B. To enhance visual appeal
C. To reduce the number of tools needed
D. To ensure consistency and accuracy
D. To ensure consistency and accuracy. CAD standards help maintain uniformity and accuracy in drawings.
Question 91: Which feature in CAD allows for the creation of identical shapes based on a single prototype?
A. Array
B. Trim
C. Scale
D. Mirror
A. Array. The array feature duplicates objects in a specified pattern, creating multiple copies efficiently.
Question 92: What does a dashed line typically represent in a blueprint?
A. A hidden feature
B. A centerline
C. A fold line
D. A visible edge
A. A hidden feature. Dashed lines usually indicate hidden features or edges not directly visible in the view.
Question 93: Which symbol represents electrical grounding on a blueprint?
A. Triangle
B. Square
C. Circle with a line
D. Three horizontal lines with a descending line
D. Three horizontal lines with a descending line. This is the standard symbol for electrical grounding.
Question 94: What information is typically found in the title block of a blueprint?
A. Electrical specifications
B. The project location
C. Designer’s name, date, and drawing scale
D. Cost estimates
C. Designer’s name, date, and drawing scale. Title blocks provide essential information about the drawing and its creator.
Question 95: In blueprint reading, what is the primary purpose of a legend?
A. To describe the scale of the drawing
B. To list all the symbols used in the drawing
C. To indicate the blueprint’s orientation
D. To provide dimensions for key components
B. To list all the symbols used in the drawing. Legends explain the meaning of symbols found in the blueprint.
Question 96: Which symbol is commonly used to indicate a break in a section of the drawing?
A. Zigzag line
B. Dashed line
C. Straight line
D. Wavy line
A. Zigzag line. Break lines often appear as zigzag lines to show where a section of the drawing is not included.
Question 97: What does a centerline typically represent in a blueprint?
A. The external edges of a part
B. The interior structure
C. The symmetry axis of an object
D. The material thickness
C. The symmetry axis of an object. Centerlines indicate symmetry and often align with features like holes or shafts.
Question 98: In architectural blueprints, what is the purpose of a floor plan?
A. To show the building’s exterior
B. To detail the roof structure
C. To provide a layout of each floor’s rooms and features
D. To illustrate the electrical wiring
C. To provide a layout of each floor’s rooms and features. Floor plans show the arrangement of spaces within a building.
Question 99: Which line type is commonly used to represent a cut or section line?
A. Hidden line
B. Chain line
C. Centerline
D. Break line
B. Chain line. Chain lines or thick solid lines with breaks indicate where an object is cut in sectional views.
Question 100: What is the purpose of a fabrication drawing?
A. To show assembly instructions
B. To provide detailed manufacturing information for individual parts
C. To present a visual rendering of the final product
D. To describe the building’s structural layout
B. To provide detailed manufacturing information for individual parts. Fabrication drawings give precise instructions on how to manufacture each part.
