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Efficiency: O Level Physics MCQs Quiz Online Tests pdf Download

Practice MCQs on efficiency: o level physics, physics MCQs for online test prep. Energy, work and power quiz has multiple choice questions (MCQ), efficiency: o level physics quiz questions and answers as output of a truck is 4500 j and its efficiency is 50%, input energy provided to truck is, answer key with choices as 5000 j, 900 j, 9000 j and 500 j for competitive exam prep. Free study guide is to learn efficiency: o level physics quiz online with MCQs to practice test questions with answers. Efficiency: O Level Physics Video

MCQs on Efficiency: O Level Physics Quiz pdf Download

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