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ADDA TEST (ADDA STUDY GUIDE BASED ON THE MECHANICAL CD TEST 2025) | 492 QUESTIONS | WIT, Exams of Mathematics

ADDA TEST (ADDA STUDY GUIDE BASED ON THE MECHANICAL CD TEST 2025) | 492 QUESTIONS | WITH 100% VERIFIED ANSWERS

Typology: Exams

2024/2025

Available from 01/14/2025

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Download ADDA TEST (ADDA STUDY GUIDE BASED ON THE MECHANICAL CD TEST 2025) | 492 QUESTIONS | WIT and more Exams Mathematics in PDF only on Docsity!

ADDA TEST (ADDA STUDY

GUIDE BASED ON THE

MECHANICAL CD TEST 2025) |

492 QUESTIONS | WITH 100%

VERIFIED ANSWERS

When measuring angles, each degree can be divided into 60 minutes. True or false? true Foreshortened circle is known as an ellipse. True or false? true an equilateral polygon must only have three sides. True or false false Concentric circles are circles having the same center. True or false True sum of all angles making up a triangle is 270 degrees. True or false? false Revision block on a drawing could contain the revision zone, letter, date, description and approved columns. true or false? true

ANSI A paper size dimensions 8.5 x 11 inches ANSI B paper size 11x17 inches ANSI C paper size 17x22 inches ANSI D paper size 22x34 inches ANSI E paper size 34x44 inches ANSI F paper size 28x40 inches ANSI G paper size 11x22.5-90 inches ANSI H paper size 28x44-143 inches ANSI J paper size 34x55-176 inches ANSI K paper size 40x55-143 inches Kilo 1000=1000^

Mega 1000 000=1000^ Giga 1000 000 000=1000^ Tera 1000 000 000 000= 1000^ Peta 1000 000 000 000 000 = 1000^5 bytes exa 1000 000 000 000 000 000 =1000^ zetta 1000 000 000 000 000 000 000 = 1000^ yotta 1000 000 000 000 000 000 000 000 = 1000^ operating system software that controls the internal operation of the computer plotter output device for a computer Graphics card computer hardware that controls the resolution of the monitor wire frame

is a "stick" representation of a 3d model whose shape is defined by series of the lines and curves CPU hardware device that runs the computer programs and controls the attached input and output devices Milimeter 1/1000 of a meter Kilometer 1000 meters = to 1 kilometer centimeter equal to one hundredth of a meter decimeter equal to one tenth of a meter Skew lines line which are non-intersecting, non-parallel in 3d space Metric system decimal system of weights and measures based on the meter and kilogram Countersink to recess a hole with a cone shape tool to provide a seat for a flat head screw Counterdrill to form a conical shoulder in a drilled hole by enlarging it with a larger drill blind hole

a hole that does not go all the way through the part counterbore enlargement of the end of a hole to a specified diameter and depth tap a tool used to cut internal threads ream to enlarge a hole to a more accurate size and surface finish Bore to enlarge a hole to a more accurate size change order an approved engineering change request on an existing drawing Database an organized collection of standard parts, libraries, completed designs, documentation and computer programs Visible lines or Object lines indicates the contour of the object hidden line uniformly spaced 1/8 inch dash lines cutting plane line indicates the location of the cut made for a section view viewing plane line used with removed partial views

break line used when complete views are not required Chain line indicates an area on a part that will receive special treatment hard drive computer storage device will generally store the most data true size a surface line that is shown actual size line precedence determines which line is shown if a center and hidden lines are in the same location Visualize to form a mental picture or image Bevel a slanted surface not at 90 degree to another surface Knurl diamond shaped or parallel pattern cut into a cylindrical surface to improve gripping or bonding between parts Chamfer a beveled corner at the opening of a hole or the end of a cylindrical part to eliminate sharp edges fillet an interior corner found on cast, forged or molded parts

round exterior corner found on cast, forged or molded parts For CAD system to be fully functional it must be made up two components; hardware and software. True or false? true Center line used as an axis of symmetry may be used for assembling drawing to indicate different parts. Counterbore symbol Spotface symbol SF letters in a counterbore symbol Intersections and developments are mutually separate from each other. Ture or false? false An intersection is a point of line where two geometric forms, such as lines or surfaces, meet or cross each other. True or false? true Visibility clear and correct representation of the relative positions of two geometric figures a pip going through a wall is an example of intersection. true or false? true Piercing point intersection of a line and a plane

intersections and their solutions are classified on the basis of the types of geometrical surfaces involved. True or false? True Ruled and double curved two broad classifications of geometrical surfaces Plane surface one type of ruled geometric surface the aerospace and automotive industries deal with the intersections such as design of instrument panels, body sections, wings and fuselages. true or false? true Single curve one type of ruled geometric surface a warped surface is one type of ruled geometric surface. true or false? False a double-curve geometrical surface is generated by a curved line revolving around a straight line in the plane of the curve. True or false? true Lines are composed of a specific number of points. true or false? false All lines that appear to cross in space are intersecting lines. True or false? false Torus

an example of double-curve geometrical surface a plane intersecting a cone vertically near a bottom edge, creates what geometric shape? Hyperbola plane intersecting a cone through side to side at an angle, creates what geometric shape? Ellipse plane intersecting cone horizontally through the whole cone, creates what geometric shape? Circle plane intersecting cone at an angle close to parallel to side of the cone. creates what geometric shape? Parabola Basic size Size from which the limits of size are derived by the application of allowances and tolerances. Allowance the minimum clearance or maximum interference between two parts clearance The space between two mating parts. Reference a non-tolerance dimension used for information purposes only. Maximum Material Condition (MMC) minimum hole diameter and maximum shaft diameter Least Material Condition (LMC) maximum hole diameter and minimum shaft diameter

Feautre portion of a part, such as a hole, keyway, or flat surface Limits The maximum and minimum allowable sizes of a feature. Straightness an example of form tolerance Parallelism an example of orientation tolerance Form tolerance how far an actual surface is permitted to vary from desired geometric form. They are not related to datum's. Orientation Tolerances Orientation tolerance is a geometric tolerance that determines the orientation for the form in relation to a reference. The parallelism, perpendicularity, and angularity of two lines or two planes are measured using a datum plane as a reference. two parallel planes common shape of a flatness tolerance zone Profile tolerancing can be used to control form, size, orientation, and location When positional tolerance is applied to a hole MMC(Maximum Material Condition), additional positional tolerance_________________ applies when the actual size of the hole is larger than its MMC size Concentricity Tolerance

the median points of the feature must lie within the specified tolerance zone Total runout tolerance can be applied to: plane surfaces, axes, and center planes datum targets may be: points, lines. or areas Symmetrical tolerance can be applied regardless of feature size only Concentricity tolerance can be applied: regardless of feature size Summetry a three dimensional geometric control Position tolerance, controls what? location and orientation When position is used to control coaxially, it is what type of control? axis to axis tolerance The difference between the maximum and minimum size limits on a part Circular runout requires a datum reference Datum feature symbols are never applied to centerlines, centerlines or axis. true or false? true pitch diameter

when a screw thread is specified as a datum feature pitch diameter is used to derive the datum axis unless otherwise specified Total runout is surface to axis type of control Parallelism symbol datum target symbol Between Symbol Angularity is considered an orientation tolerance Circularity is considered a form of tolerance Concentricity is considered a location tolerance Cylindricity is considered a form tolerance Flatness is considered a form tolerance Parallelism is considered an orientation tolerance Perpendicularity is considered an orientation tolerance Position

considered a location tolerance Seconds expressing an angular dimension with the symbols " mean seconds straightness considered a form tolerance Symmetry considered a location tolerance Angular dimensions may be expressed in degrees and decimal parts of a degree or in degrees, minutes, and seconds. true or false? true Profile of a line is two-dimensional geometric control Straightness symbol Flatness symbol perpendicular symbol True position symbol Profile of a surface this geometric characteristic symbol Projected Tolerance Zone reference dimension dimensions in ( ) Statistical Tolerance symbol

Symmetry Symbol Total Runout symbol Unequally Disposed Profile symbol All Around Symbol concentric circles symbol with arrow through it Continuous feature symbol Cylindricity symbol Datum Feature Symbol Dimension origin symbol Free state symbol Circle with the capital letter F located inside Independency symbol Least Material Condition (LMC) symbol Maximum Material Condition (MMC) symbol Tangent Plane Symbol Angularity Symbol Basic Dimension symbol dimensions in a box Circular Runout symbol change image circularity symbol

Concentricity Symbol Flatness Symbol Not to Scale symbol normal dimension lines but a line under the dimension numbers Maximum Material Boundary (MMB) Profile of a Line Symbol Least Material Boundary (LMB) sub-assembly if a design depicts only part of an assembly, it is identified as a sub-assembly Non-standard parts a detail drawing is created for non-standard parts Working Drawings drawings that communicate the final design for production purposes Zones on a drawing the areas of a border of a drawing sheet used for locating specific points by the coordinate system engineering change order (ECO) formal request for making a change to existing engineering drawing Engineering Change Notice (ECN) is a form that communicates the details of an approved change to someone who needs to know about the change

The piping drawing, generally one of the most complex drawing types, is a scale drawing that provides plan, elevation, and sectional view. True or false? True The piping isometric is a pictorial drawing that illustrates a "pipe run" in three-dimensional form. True or false? true a piping "spool drawing" would be used by pipe fitters and welders. true or false? true Bolts may be omitted from a set of working drawings Special information should be noted on the purchase order and never on the drawing. true or false? false Engineer drafter's primary supervisor in the design department finish marks should always be used on the parts made from rolled stock. true or false? false If a part is "finished all over" , omit all finished marks and use a general note. true or false? true the usual fillet weld has equal legs. true or false? true An open circle around the elbow of the arrow indicates that a weld is to be made in an open field for safety. true or false?

false the size of the weld is given to the right of the weld symbol. true or false? false Spot-weld symbols do not have an arrow-side or other side significance. true or false? true Machine a type of drawings that would expect to fins surface finish symbols surface weld is used to build up s surface Form (in relation to thread terminology) profile of a thread, such as simplified, detailed or schematic Crest (in relation to threat terminology) outside point of a thread Root (in relation to threat terminology) inside meeting point of a thread Lead (in relation of thread terminology) the distance a thread moves axially; 1 complete revolution of a thread Key (in relation to fasteners) a piece of metal that creates restrictive movement between mating parts Retaining Ring (in relation to fasteners) prevents axial movement of a shaft in a hub Screw thread

a ridge of uniform cross section in the form of a helix on the external or internal surface of a cylinder American National Thread, with flattened roots and crest, is a stronger thread. true or false? true Metric Thread type of thread is the standard screw thread agreed upon for international screw Buttress Thread designed for transmit power in one direction only is the purpose ASME/ASME Y14.6-2001 Screw Thread Representation is a standard for drawing, specifying, and dimensioning threads on drawings. true or false? true Single thread is composed of one ridge, and the lead is therefore equal to the pitch. How many different methods of representing screw threads that can be on a drawing? 3 In the case of blind tapped holes, drill depth is normally drawn at least how many schematic pitches beyond the thread length? 3 When straight pipe threads are specified, what letters are used to identify the threads? question 28 NPS Thread length for bolts or screws up to 6" (150mm) is? 2D+1/4" (or +6mm)

short bolts are typically available in standard length increments of: 1/ Carbon steel pipe is the preferred above-ground pipe used in industry today. true or false? true Pipe is specified by its nominal pipe side (NPS) and refers to the inside diameter (ID) for pipe sizes from 1/8" to 12" (3-300mm). true or false? true The NPS for 14" (350mm) and above pipe uses the outside diameter (o.d.) or (OD). true or false? true Screw connections are used on steel, malleable iron, cast iron, and cast brass pipe less than 2- 1/2" diameter. true or false? true A piping isometric drawing is a pictorial view of a piping system complete with fittings, valves, dimensions, notes, and possibly instrumentation. true or false? true All V-Groove welds are to have what groove angle unless otherwise noted? 60 degrees TIG welding involves the use of wire feed. true or false? False MIG welding involves the use of wire feed. true or false? true TIG Welding

is used to weld thin sections of stainless steel and light metals MIG welding is used to weld aluminum and other ferrous metals Stick welding also called shielded metal arc welding Multiple lead thread the type of thread used when quick motion, not great power. When detailing, only notate threads of____________ in size. 1" or 25mm or greater Correct graphical representation of weld shown Spot weld symbol Plug weld symbol Fillet Weld Symbol field weld symbol Groove weld symbol arrow with open triangle Tension stress that occurs when forces act to stretch an object Bending (force) a combination of push (compression) and pull (tension) forces that results in a temporary curving change in the shape of some structures Compression (force)

a squeezing force applied to an object that can make an object shrink Torsion (force) a force that acts on a material by twisting its ends in opposite directions contour (welding symbol) #2 on picture Finish Symbol (welding symbol) information above the contour ( can be flush or convex). #1 on picture Size of weld (location) #4 on picture (can be a S or D) Number of welds #13 on picture Root openings or depth of filling (weld drawing) #3 on picture Groove angle or included angle (weld drawing) #8 on picture Length of weld Process symbol (weld drawing) #5 on picture Gas metal-arc welding- automatic welding Not include the circle Spot weld Seam weld

Square weld!!!!!!!!!!!!!! What is a Butt Weld? - TWI (twi-global.com) V weld Bevel Weld plug weld What degree is the Unified thread Form? 60 degree What is the degree of the Buttress Thread Form? 45 degree Given the thread note 3/8-24 UNF-3B, what does the B designate? it is an internal thread Given the thread note M 6X1-5g, what does the g designate? it is an external thread Given the thread note M 10X1.5-6H, what does the H designate? it is an internal thread with no allowance Given the thread note M 10X1.5-6H, what does the 6 designate? grade of tolerance of the thread Given the thread note M 6X1-5g, what does the 5 designate? grade of tolerance of the thread Given the thread note 1/2 - 13 UNC-2A, what does the 1/2 designate? major diameter of the thread Given the thread note 3/8 - 24 UNF-3B, what does the 3/8 designate?

major diameter of thread Given the thread note note M 10X1.5-6H, what does the 10 designate? major diameter of the thread Given the thread note note M 6X1-5g, what does the 6 designate major diameter of the thread given the thread note 1/2 - 13 UNC-2A, what does the 13 designate? number of threads per inches given the thread note 3/8 - 24 UNF-3B, what does the 24 designate? number of thread per inch Given the thread note 1/2 - 13 UNC-2A, what does the 2 designate? the thread class to fit given the thread note 3/8 - 24 UNF-3B, what does the 3 designate? the thread class to fit Given the thread note 1/2 - 13 UNC-2A, what does the UNC designate? the thread form Given the thread note 3/8 - 24 UNF-3B, what does the UNF designate? thread form (unified) Given the thread note M 10X1.5-6H, what does the M designate? the thread is an ISO metric thread Given the thread note M 10X1.5-6H, what does the 1.5 designate? thread pitch Weld-All-Around Symbol

What is the degree of the Whitworth Thread form? 55 degree What is the degree of the Sharp-V Thread form? 60 degree Quadrilateral plane figure bounded by 4 straight sides Trapezoid A quadrilateral with exactly one pair of parallel sides 1 inches is equal to how many centimeters? 2.54cm 1 centimeter is equal to how many inches? .394 Area formula for a triangle A=1/2bh Circumference of a circle formula C=2πr or C=πd How to find a missing dimension on triangle with only one length dimension and one angle? SOHCAHTOA Practice (cusd80.com) Parallelogram area formula A=bh Arc Length Formula s=rθ (r=radians)

Prism Volume Formula V=Bh box volume formula V=lwh Cylinder Volume Formula V= πr²h Assembly Drawing graphic presentation showing how two or more detailed parts are jointed to form a sub or complete unit Actual size the size of a part as measured working drawings a complete set of drawings specifying the manufacture and assembly of a part Revision an approved engineering change request on an existing drawing Layout a drawing that indicates the original concept or idea General location of TITLE BLOCK on drawings is where? lower right hand Mechanical drawings require the drawing scale to be under the front view. true or false? false