Mechanical Engineering Multiple Choice Questions and Answers

MCQ quiz on Mechanical Engineering multiple choice questions and answers on Mechanical Engineering MCQ questions on Mechanical Engineering objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject.

Mechanical Engineering MCQ Questions and Answers Quiz

1. During suction stroke in a diesel engine, it draws in

  1. Vapour of petrol only
  2. Air only
  3. Mixture of petrol and air
  4. Only air

2. A unit consists Of closed vessel, economizer, super heater, water wall tubes and it producing steam as per requirement called.

  1. Boiler
  2. Power plant
  3. Steam generator
  4. l.c. engine

3. Work is considered positive when

  1. Work is done on the system
  2. work is done by the system
  3. both a and b
  4. none of the above

4. A source of energy is known as renewable source

  1. Fossil fuel
  2. Solar
  3. CNG
  4. All of the above

5. 1 inch is equals to how many centimeters?

  1. 2.5
  2. 2.46
  3. 2.54
  4. 2.58

6. 1 kg/cm2 = ........bar

  1. 0.981
  2. 9.81
  3. 98.1
  4. 981

7. A device which is used for pumping the water in boiler is

  1. Feed check valve
  2. Economi ser
  3. Injector
  4. Feed Pump

8. A device which is used for remove the impurities from the boiler is called

  1. Economizer
  2. Feed pump
  3. Injector
  4. Blow off cock

9. A system in which there is no transfer of mass across its boundaries is called

  1. Closed system
  2. Open system
  3. Isolated system
  4. None of this

10. Air vessel is used in

  1. Centrifugal Pump
  2. Vane pump
  3. Gear pump
  4. Single acting Reciprocating.
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MCQ Multiple Choice Questions and Answers on Mechanical Engineering

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