BTEC International Level 3 Engineering

Unit 15: Electrical Machines — assessment criteria

BTEC International Level 3 Unit 15 (Electrical Machines) — 60 Guided Learning Hours.

Internal / Optional60 GLH14 criteria

Teaching this subject at Level 2?

Assessment criteria

Reproduced verbatim from the Pearson specification — the same grid the assignment brief carries. A unit grade is the highest band where all criteria in that band (and every band below it) are met.

Pass

6 criteria

A.P1Explain how one regulation and one guidance note relate to the safe operation of electrical machines.

A.P2Produce a risk assessment on operating a range of electrical machines safely.

B.P3Conduct experiments safely to determine the characteristics of two types of direct current motor and a direct current generator.

B.P4Explain, using the experimental results and theoretical data, how the two direct current motors and a generator operate, including any required control circuitry, and suggest suitable applications.

C.P5Conduct experiments safely to determine the characteristics of a single-phase transformer, motor and generator and a three-phase motor.

C.P6Explain, using the experimental results and theoretical curves, how the single-phase transformer, motor and generator and a three-phase motor operate, including any required control circuitry, and suggest suitable applications.

Merit

5 criteria

A.M1Compare the practicality of the risk assessment against local control procedures already in place to manage hazards from electrical machines.

B.M2Conduct experiments accurately and efficiently to determine the characteristics of three types of direct current machine.

B.M3Analyse, using the results and theoretical data and calculations, the operation of three types of direct current machine.

C.M4Conduct experiments accurately and efficiently to determine the characteristics of four alternating current machines.

C.M5Analyse, using the results and theoretical curves and calculations, the operation of four alternating current machines.

Distinction

3 criteria

A.D1Evaluate, using language that is technically correct and of a high standard, the local risk assessments against relevant regulations and guidance notes, justifying appropriate control measures for electrical machines.

B.D2Evaluate the direct current electrical machines, comparing the results from safely conducted experiments and theoretical curves and calculations, and explain the conditions for optimal performance and suitable applications.

C.D3Evaluate the operation of alternating current electrical machines, comparing the results from safely conducted experiments and theoretical curves and calculations, and explain the conditions for optimal performance and suitable applications.

Command verbs in this unit

The verb decides the depth expected — that is what separates Pass from Merit and Distinction work on the same learning aim.

ExplainProduceConductCompareAnalyseEvaluate

Pearson's ladder runs Identify → Describe → Explain → Compare / Analyse → Evaluate / Justify / Assess. A Merit or Distinction criterion on the same aim always implies the Pass beneath it: an “evaluate” answer that never first “explains” fails, however polished it reads. Hover a verb for what it demands.

How checkb.tech checks this unit

Upload a learner's submission and checkb.tech reads it against exactly these criteria, reporting each one as met, partly met, or not met — with the evidence that informed the verdict cited, so every call is auditable.

The check runs against the official Pearson documents for this unit, and identical evidence always produces an identical result — the same script gets the same verdict every time.

It never awards a grade. You stay the assessor: confirm, dismiss, or act on every criterion before your assessment decision is final.

Verification & Quality Tools for Unit 15

Free Lead IV and assessor utilities configured for Pearson BTEC International specifications.

Authenticity CheckerAudit Unit 15 Evidence with Free Authenticity Checker

Screen submissions for generic AI filler, inspect slide presentations, and generate oral viva questions.

Lead IV UtilityCalculate IV Sample Size

Generate a JCQ-compliant square-root sampling plan with assessor risk tiers and P/M/D grade distribution.

Compliance CalculatorCheck Resubmission Window

Compute the exact 15th working day deadline excluding term holidays and audit Pearson conditions.

Recommended Guides & Articles

Evidence standards, internal verification protocols, and marking guidance for Unit 15.

7 min read · criteria markingBTEC Command Verbs Explained (Pass, Merit & Distinction)

The full BTEC command-verb ladder from identify to evaluate, what each verb demands in evidence, and how verbs decide the Pass, Merit or Distinction band.

6 min read · internal verificationBTEC Resubmission Rules: One Opportunity, Done Right

When a BTEC resubmission is allowed: the one-opportunity rule, Lead IV authorisation, the short window, and what a compliant resubmission looks like.

7 min read · criteria markingPass, Merit & Distinction in BTEC: How Grading Really Works

How BTEC unit grades are decided: hierarchical P/M/D criteria, the all-or-nothing band rule, and why one missing Pass criterion caps a whole unit.

More Level 3 Engineering units

Unit 12 — Business Improvement Techniques Unit 13 — Operation and Maintenance of Mechanical Systems Unit 14 — Fabrication Techniques Unit 16 — Three Phase Electrical Systems Unit 17 — Power and Energy Electronics All units →

Criteria and aim text reproduced for teacher reference from the official Pearson qualification documentation (Pearson BTEC International Level 3 Qualifications). BTEC is a registered trademark of Pearson Education Limited. checkb.tech is an independent tool — not affiliated with, endorsed by, or sponsored by Pearson. It never awards a grade; the teacher stays the assessor.