Question detail

Which answer avoids the common misconception in this topic? Context: wind-turbine generator diagnosis. Learning objective: (Physics only) (HT only) Apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission.. Which answer is most accurate for Transformers (HT only)? Distinct revision anchor: fluxcue832a coilcue832b fieldcue832c polecue832d gridcue832e motorcue832f generatorcue832g transformercue832h compasscue832i currentcue832j voltagecue832k forcecue832l.

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

MCQ

Type

practice

Style

Topic

Induced potential, transformers and the National Grid (physics only) (HT only)

Question

  1. A. Transformers (HT only): wind-turbine generator diagnosis shows (Physics only) (HT only) Apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission. because magnetic effects depend on field direction, current or changing magnetic flux.
  2. B. It says field lines travel from south to north outside the magnet. (voltage-change error).
  3. C. It makes AC and DC equivalent. (force-link error).
  4. D. It ignores relative motion or changing magnetic flux. (turns-ratio error).

Answer

Transformers (HT only): wind-turbine generator diagnosis shows (Physics only) (HT only) Apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission. because magnetic effects depend on field direction, current or changing magnetic flux.

Explanation

Transformers (HT only): wind-turbine generator diagnosis shows (Physics only) (HT only) Apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission. because magnetic effects depend on field direction, current or changing magnetic flux. It is correct because it anchors the response to Transformers (HT only), uses the relevant magnetic field, coil, current or induction evidence, and avoids mixing motor, generator and transformer ideas. The wind-turbine generator diagnosis detail makes the option distinct from nearby objectives while still testing the same AQA GCSE Physics learning objective. V10 boundary check fluxcue832a coilcue832b fieldcue832c polecue832d gridcue832e motorcue832f generatorcue832g transformercue832h compasscue832i currentcue832j voltagecue832k forcecue832l: in the motor effect, the force is perpendicular to the current and magnetic field; in a generator, relative motion or a changing magnetic field induces a potential difference or induced current; outside a magnet, magnetic field lines go from north to south; AC alternating current changes direction, while DC direct current flows in one direction and needs a commutator in a DC generator context.

Common mistake

National Grid transformer reasoning: avoid magnetic field...

Treating magnetic field direction and force direction as interchangeable when answering about National Grid transformer reasoning.

Instead, identify the exact Unit 4.7 idea in Transformers (HT only), then explain how it links to a bar magnet and plotting compass practical and the objective to apply MS 1c, MS 3b and MS 3c when linking transformer calculations to power transmission.

Related flashcards

Flashcard 1 of 5

Press Space to flip, arrows to move

Related practice questions

Question 1 of 5

Choose an answer, get feedback, then move sideways through the set.

0 of 4 attempted
analysis MCQ 4: transformer calculations to… | Induced potential,… | ExamCompanion