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3 marksTransformers

CSEC Physics · May/June 2019 · Paper 2 · Question 1(a)

A transformer is shown in Figure 1. The primary coil is labelled. You need to identify the other parts.

Name the parts labelled X, Y and Z.

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Other parts of this question

  1. 1(b)Using the grid on page 7, plot a graph of Vs against Vp.[8 marks]
  2. 1(c)Determine the gradient, S, of the graph.[4 marks]
  3. 1(d)(i)Use the gradient, S, to calculate the number of turns in the secondary coil, Ns, given that the number of turns in the primary coil, Np = 85.[4 marks]
  4. 1(d)(ii)Calculate the current in the secondary coil, Is, if the current in the primary coil Ip = 1.8 A.[3 marks]
  5. 1(d)(iii)Calculate the power output, Pout, of the transformer, given that the voltage in the secondary coil, Vs = 55 V.[3 marks]

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