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ASME GDTP Technologist

Practice Questions125 questions

2026 Statistics

Key Facts: ASME GDTP Senior Level Exam

150

Exam Questions

ASME Y14.5-2009 Senior Level FAQ

6 hours

Maximum Duration

ASME Y14.5-2009 Senior Level FAQ

78%

Overall Passing Grade

ASME Y14.5-2009 Senior Level FAQ

50%

Minimum Per Category

ASME Y14.5-2009 Senior Level FAQ

3 years

Minimum Documented GD&T Experience

ASME Applicant Information Handbook (2026), Senior Level requirements

$623

Senior Level Price

ASME GDTP pricing table on official page

3 years

Certificate Validity

ASME GDTP FAQ

This bank follows the official Y14.5-2009 Senior Level outline: Scope, General Dimensioning and Symbology 10%, Datum Reference Frames 30%, Form 5%, Orientation 5%, Location 25%, Profile 20%, Runout 5%, with 150 questions in a maximum of 6 hours and a pass mark of 78% overall plus 50% in every category. As of August 7, 2026, ASME sells the 2009 Senior exam at $623 and a Y14.5-2018 Senior exam at $495 that carries the same seven weights but passes at 74%; the Y14.5M-1994 Senior exam remains available on request at an 80% pass mark. A certificate names only the revision passed.

Sample ASME GDTP Senior Level Practice Questions

Try these sample questions to test your ASME GDTP Senior Level exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 115+ question experience with AI tutoring.

1A design lead is choosing a certification path for a role that owns GD&T callout selection on production drawings. Which ASME GDTP level best matches that responsibility?

A.Technologist, because it is limited to inspecting finished parts

B.Senior Level certification

C.Technologist, because it is required before any Senior application

D.Senior Level, because it replaces the need to understand Y14.5 symbols

Explanation: ASME describes the Senior Level as measuring the ability to select and apply geometric controls to drawings. That aligns with design-authority decisions about datum features, modifiers, tolerance calculations, and documenting design intent.

2Which applicant meets ASME's current Senior Level experience requirement?

A.An engineering graduate without documented GD&T experience

B.Thirty-six months of documented GD&T experience

C.A Technologist certificant without GD&T work experience

D.Three years of drafting unrelated to GD&T application

Explanation: ASME's current GDTP page requires three years, or 36 months, of documented experience using GD&T in both application and understanding. Technologist certification and ASME membership are not prerequisites for the Senior examination.

3Which Y14.5 revisions does ASME currently list as regular GDTP offerings?

A.ASME Y14.5-2018 only

B.The legacy 1994 revision only

C.ASME Y14.5-2009 and 2018

D.Any employer-selected GD&T manual

Explanation: ASME currently lists regular GDTP purchase options for the 2009 and 2018 revisions. The 1994 examination remains available only on request through ASME Customer Care, so it is a legacy route rather than one of the regular listed offerings.

4What is the official name to use for this practice exam metadata?

A.ASME GDTP Senior Level

B.ASME GD&T Inspector Level

C.ASME Y14.5 Drafter License

D.Prometric Senior Metrology Certificate

Explanation: The current ASME page uses Senior Level for the upper GDTP certification path. The credential is part of ASME's GDTP Y14.5 personnel certification program.

5A designer wants to control how a bracket mounts first, how it clocks second, and how a slot locates third. What Senior-level decision is most important before writing feature control frames?

A.Functional datum features and precedence

B.Datum order based on largest surface area

C.Datum order based on tolerance tightness

D.Datums selected for inspection convenience

Explanation: Senior application starts with functional datum selection and precedence. The feature control frames should constrain the part in the same order the assembly uses it: primary seating, secondary orientation or clocking, and tertiary location.

6A flat machined base face is the surface that seats against a mating plate. Which datum role is usually most appropriate for that face?

A.The primary datum feature

B.Tertiary datum feature, because flat surfaces cannot be primary

C.A non-datum feature, because only holes can be datums

D.A datum target only, even when the full surface is functional

Explanation: A broad seating surface commonly serves as the primary datum feature because it stabilizes the part and removes the first set of degrees of freedom in the same way the assembly does.

7A clearance hole pattern only needs the screws to assemble without interference. Which modifier is commonly useful on the position tolerance of the holes?

A.MMC on the position tolerance

B.LMC, to protect minimum wall thickness around the holes

C.RFS only, because clearance holes can never use material modifiers

D.Tangent plane, because hole axes are being located

Explanation: For clearance assembly, position at MMC creates a functional boundary that protects worst-case assembly while allowing bonus tolerance when holes are larger than MMC. This often improves manufacturability without hurting fit.

8A thin wall around a bore must never become too small because pressure containment depends on remaining stock. Which design choice is most directly aligned with that function?

A.LMC on the location control

B.Use MMC only because all holes require MMC

C.Use MMC to protect assembly clearance

D.Use circularity to protect wall thickness

Explanation: LMC is selected when the functional risk is minimum material, such as remaining wall thickness. It lets the tolerance protect the least-material boundary rather than only assembly clearance.

9A profile control is applied to an exterior cast surface mainly to preserve fit against a mating cover. What should the Senior designer ensure is defined?

A.True profile, tolerance, and functional datums

B.Only the casting supplier's preferred machining sequence

C.A plus/minus size on every point instead of basic geometry

D.No datum references because all profile controls are free-form

Explanation: Profile communicates a tolerance zone around true profile geometry. When fit depends on assembly orientation and location, the control must include the relevant datums and basic or model geometry that defines the true profile.

10A long threaded stud projects from a plate and must enter a mating hole before the plate seats. Which control often communicates the functional need better than position alone?

A.Position with projected tolerance zone

B.Flatness of the plate only

C.Circularity of the threaded major diameter only

D.Perpendicularity evaluated at the plate surface

Explanation: A projected tolerance zone extends the positional requirement above the surface to the height where the mating feature engages. It controls angular error that could cause assembly interference in projecting pins, studs, or threaded holes.

About the ASME GDTP Senior Level Exam

The ASME GDTP Senior Level certification measures knowledge, selection, and application of dimensioning and tolerancing principles in ASME Y14.5, including appendices; ASME currently bases certification on the Y14.5-2009 or Y14.5-2018 revision and keeps the Y14.5M-1994 exam available on request. ASME describes Senior competency as selecting geometric controls based on feature function and relationships, performing tolerance calculations, applying appropriate symbols, modifiers, and datum references, applying GD&T to manufacturing, quality, and verification, and establishing functional gaging activities. Senior applicants must document a minimum of 3 years of relevant GD&T professional experience and pass the Senior GDTP examination; Technologist certification is not required.

Assessment

150 closed-book multiple-choice questions based on the selected Y14.5 revision; this practice set follows the official Y14.5-2009 Senior Level distribution.

Time Limit

Maximum of 6 hours

Passing Score

78% overall and at least 50% in each Y14.5-2009 Senior category

Exam Fee

$623 Senior Level application/exam package (The American Society of Mechanical Engineers (ASME) / Prometric)

ASME GDTP Senior Level Exam Content Outline

10%

Dimensioning and Symbology

Application of Y14.5 dimensioning practices, basic dimensions, symbols, modifiers, feature control frame structure, and clear communication of product design intent.

30%

Datum Referencing

Functional datum feature selection, datum precedence, datum targets, multiple datum features (2009 terminology), datum feature simulators, 3-2-1 constraint, RMB/MMB/LMB concepts, datum shift, and inspection alignment.

Form

Application of flatness, straightness, circularity, and cylindricity to local form, datum establishment, sealing, bearing, and manufacturability problems.

Orientation

Parallelism, perpendicularity, angularity, datum-related orientation zones, basic angles, orientation at material condition, and avoiding unnecessary location control.

25%

Location

Position tolerancing, true position calculations, bonus tolerance, virtual condition, resultant condition, projected tolerance zones, slots, patterns, simultaneous requirements, and functional tolerance allocation.

20%

Profile

Profile of line and surface, true profile definition, datum-referenced profile strategy, equal and unequal disposition, all-around and limited scope, castings, weldments, CMM evaluation, and interface control.

Runout

Circular runout, total runout, datum-axis rotation, rotating surface function, seal and bearing implications, and tradeoffs versus position, profile, and form controls.

How to Pass the ASME GDTP Senior Level Exam

What You Need to Know

Passing score: 78% overall and at least 50% in each Y14.5-2009 Senior category
Assessment: 150 closed-book multiple-choice questions based on the selected Y14.5 revision; this practice set follows the official Y14.5-2009 Senior Level distribution.
Time limit: Maximum of 6 hours
Exam fee: $623 Senior Level application/exam package

Keys to Passing

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ASME GDTP Senior Level Study Tips from Top Performers

1Spend the most time on datum referencing; ASME lists it as 30% of the Y14.5-2009 Senior Level outline.

2For every control-selection question, identify the functional failure mode first: assembly interference, minimum wall, sealing, rotating runout, pattern alignment, or inspection repeatability.

3Keep controlled-feature bonus tolerance separate from datum feature shift. Both may affect acceptance, but they come from different modifiers and boundaries.

4Practice choosing MMC, LMC, and RFS from function rather than habit: MMC for worst-case assembly clearance, LMC for minimum material protection, and RFS when size should not relax geometry.

5Read composite and multiple-segment feature control frames one segment at a time. Do not borrow omitted datums into lower segments.

6Treat profile as a design strategy, not just a symbol. Define true profile, datum relationships, scope, and zone disposition before answering.

7Connect every tolerance to manufacturability and inspection: a correct Senior answer usually explains how the requirement will be made, fixtured, measured, or functionally gaged.

8Use timed mixed practice after topic review because the Senior exam is closed book and application questions often combine datum establishment, modifiers, and calculations.

Frequently Asked Questions

How many questions are on the ASME GDTP Senior Level exam?

ASME states that both current Senior exams — Y14.5-2009 and Y14.5-2018 — contain 150 closed-book multiple-choice questions with a maximum duration of six hours. This practice set follows the 2009 outline. The legacy Y14.5M-1994 exam is available only on request.

What score do I need to pass the Y14.5-2009 GDTP Senior Level exam?

ASME requires at least 78% overall and at least 50% in each Y14.5-2009 Senior category. The separate current Y14.5-2018 Senior exam requires 74% overall and at least 50% in each section; passing one revision does not certify the other.

Does ASME require Technologist certification before Senior Level?

No. ASME states that it is not required to be a certified GDTP Technologist to qualify for Senior Level certification, and that ASME membership is not an exam requirement. Senior applicants must document a minimum of 3 years of relevant GD&T professional experience, personally performed within the last 3 years and demonstrating independent application, and must pass the Senior GDTP examination.

Is there an active ASME GDTP 2018 Senior exam?

Yes. ASME states that certification is currently based on either the 2009 or the 2018 revision of ASME Y14.5 and sells a Y14.5-2018 Senior application package at $495. The 2018 Senior exam is 150 questions in a maximum of six hours and passes at 74% overall with at least 50% per section, against the same seven weights as 2009. This practice set follows the Y14.5-2009 Senior outline, which passes at 78%; a certificate names only the revision passed.

How long is ASME GDTP Senior Level certification valid?

ASME states that successful applicants receive a certificate with an expiration date three years from the date of issuance. Recertification is managed through ASME PC-Connect according to ASME's current maintenance process.

Where is the Senior Level exam taken?

After ASME accepts the application, candidates receive scheduling instructions for a Prometric testing center. ASME states that candidates have 180 days to schedule the exam after acceptance, with a one-time 180-day extension available for a fee, and that results are emailed within 24 to 48 hours including the percentage correct within each part.