Efficiency: O Level Physics MCQs Test Online pdf Download

Practice MCQs on efficiency: o level physics with physics tests for online test prep and learning. Free study guide has multiple choice questions (MCQ) with efficiency: o level physics quiz as output of a truck is 4500 j and its efficiency is 50%, input energy provided to truck is, answering options 5000 j, 900 j, 9000 j and 500 j for exam prep. Study to learn efficiency: o level physics quiz online with MCQs to practice test questions with answers.

MCQs on Efficiency: O Level Physics

MCQ. Output of a truck is 4500 J and its efficiency is 50%, input energy provided to truck is

  1. 5000 J.
  2. 900 J.
  3. 9000 J.
  4. 500 J.

C

MCQ. In a typical power station, amid a series of energy transfers and conversions, about 70% of energy input gets wasted in form of thermal energy, efficiency of such a power station is about

  1. 0.3.
  2. 0.4.
  3. 0.7.
  4. 1.

A

MCQ. A car uses total energy of 2500 J and output is 750 J. efficiency of car is

  1. 50%.
  2. 30%.
  3. 25%.
  4. 80%.

B

MCQ. Formula for efficiency is

  1. (energy input / energy output) x 100.
  2. (energy input / energy output) x 100.
  3. (useful energy input / energy output) x 100.
  4. (useful energy output / total energy input) x 100.

D

MCQ. Efficiency of a machine is measured by

  1. (Wasted Energy Output ⁄ Energy Input) × 100 %.
  2. (Energy Input ⁄ Wasted Energy Output) × 100 %.
  3. (Useful Energy Output ⁄ Energy Input) × 100 %.
  4. (Energy Input ⁄ Useful Energy Output) × 100 %.

C

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