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I.C. Engine MCQ PDF (First Edition)

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Introduction: Engine technology is an important topic for various competitive exams such as Junior Engineer (JE) and Motor Vehicle Inspector (MVI). Understanding the difference between SI and CI engines and their operating principles is crucial for candidates appearing in these exams. In this article, we will discuss some frequently asked multiple-choice questions (MCQs) related to SI and CI engines along with a downloadable PDF containing additional questions and answers.

SI Engine: SI engine stands for Spark Ignition engine, also known as petrol engines. These engines use a spark plug to ignite the air-fuel mixture. The combustion process is initiated by a spark plug, and the fuel-air mixture is ignited to produce power. The following are some MCQs related to SI engines:

  1. In SI engine, the ignition is caused by:
  2. a) Compression
  3. b) Spark plug
  4. c) Fuel injection
  5. d) None of the above

Answer: b) Spark plug

  1. Which of the following fuel is used in SI engines?
  2. a) Petrol
  3. b) Diesel
  4. c) CNG
  5. d) All of the above

Answer: a) Petrol

  1. Which of the following is the most important parameter for SI engine design?
  2. a) Compression ratio
  3. b) Fuel injection pressure
  4. c) Fuel injection timing
  5. d) None of the above

Answer: a) Compression ratio

CI Engine: CI engine stands for Compression Ignition engine, also known as diesel engines. These engines use compression to ignite the air-fuel mixture. The fuel is injected into the combustion chamber, and the high compression ratio of the engine causes the fuel to ignite spontaneously. The following are some MCQs related to CI engines:

  1. In CI engine, the ignition is caused by:
  2. a) Compression
  3. b) Spark plug
  4. c) Fuel injection
  5. d) None of the above

Answer: a) Compression

  1. Which of the following fuel is used in CI engines?
  2. a) Petrol
  3. b) Diesel
  4. c) CNG
  5. d) All of the above

Answer: b) Diesel

  1. Which of the following is the most important parameter for CI engine design?
  2. a) Compression ratio
  3. b) Fuel injection pressure
  4. c) Fuel injection timing
  5. d) None of the above

Answer: c) Fuel injection timing

Downloadable PDF: To help candidates prepare better for JE and MVI exams, we have prepared a PDF containing additional MCQs related to SI and CI engines. The PDF contains 350 questions with answers and explanations.

 

Conclusion: SI and CI engines are an important topic for JE and MVI exams. Candidates appearing for these exams should have a clear understanding of the differences between these engines and their operating principles. The MCQs provided in this article and the downloadable PDF will help candidates test their knowledge and prepare better for the exams.

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