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The plant above has a rated capacity of \( 5.0 \) t/h and operates \( 1800 \) hours a year against a possible \( 8000 \). Its utilisation factor is

  • A.4.4 per cent
  • B.22.5 per cent
  • C.45.0 per cent
  • D.77.5 per cent

Answer: B

Correct answer: 22.5 per cent

\[ \text{Utilisation} = \frac{1800}{8000} = 0.225 = 22.5\% \]

The rated capacity of 5 t/h does not enter the calculation - utilisation compares hours used with hours available, and both the actual and rated outputs share the same hourly rate.

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