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1131 questions found

Module 3. Electrical fundamentals

In a an DC motor, the rotation of the MNA

  • is opposite to the rotation of the armature.
  • is slightly less speed than the rotation of the armature.
  • is the same as the rotation of the armature.
tijaku asking:

MNA rotates in the same direction than the armature, right?

Module 3. Electrical fundamentals

Which of the following would be used to calculate transformer turns ratio?

  • Secondary turns / primary turns.
  • Primary turns * secondary turns.
  • Primary turns / secondary turns.
tijaku asking:

isn't this wrong?

Module 6. Materials & hardware

The colour code on sheet metal indicates

  • only the specification of the material.
  • the spec and gauge of the material.
  • that the material is from an approved source.
manin asking:

any link plz

Module 6. Materials & hardware

When examining a piece of metal through a magnifying glass, hair line cracks would indicate

  • crevice corrosion.
  • intergrannular corrosion.
  • surface corrosion.
manin asking:

r u sure about the answer or could it be :surface corrosion'

Module 2. Physics

A mass of 10kg placed 2 metres away from a pivot will have a moment of

  • 196 NM.
  • 150 NM.
  • 980 NM.
obrien99 asking:

Is this correct I thought it would have been 20nm

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