Question 19

The efficiency of a machine is always less than 100% because part of the energy input is used to

  • A.stop the machine after working
  • B.perform useful work on the load
  • C.overcome friction
  • D.lift the machine up
Objective

Question details

Exam body
BECE JHS
Subject
Integrated Science
Year
2012
Question no.
#19
Type
Objective

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