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INTERNAL COMBUSTION ENGINES QUESTIONS WITH ANSWERS

INTERNAL COMBUSTION ENGINES Fig. Internal Combustion Petrol Engine QUESTIONS WITH ANSWERS Define supercharging in IC Engines. A supercharger is a compressor which compresses air 6 to 8 psi above atmospheric pressure. This gives more oxygen for better burning of fuel. Thus engine produces more power.  Supercharger gets power from the IC engine crankshaft through a…

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SCREWED JOINTS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

SCREWED JOINTS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ on screwed joints increase depth of understanding and clarity. This helps in the proper selection of a screwed joint in a particular application.     1. A screwed joint is a Temporary joint Permanent joint Temporary as well as permanent joint None Ans: (a)    …

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LEVERS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

LEVERS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS  MCQ help in understanding the levers in full depth. Levers give us a mechanical advantage. Levers can lift heavy jobs with less effort. Class 1 levers have Effort between the load and the fulcrum Fulcrum placed between the effort and load Load in-between the effort and the fulcrum…

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 RIVETED, BOLTED & COTTER JOINTS SHORT QUESTION ANSWERS

RIVETED, BOLTED & COTTER JOINTS SHORT QUESTION ANSWERS Question answers make the concept clear. Joints play an important role in manufacturing. Different joints used in different applications. No assembly is possible without a joint. Riveted joints used in sheet work. These used in boilers. These are easily made leak proof. These can withstand higher temperatures….

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MACHINE DESIGN SHORT QUESTION ANSWERS CLASS NOTES

 MACHINE DESIGN SHORT QUESTION ANSWERS Question answers are very helpful in better understanding. These improve clarity too. All this is helpful in design of a component. Design is process to create an object /machine. It performs the required function satisfactorily. It is durable & have minimum cost. It involves (i) Selection of material of construction…

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DESIGN OF A GEAR DRIVE CLASS NOTES FOR MECHANICAL ENGINEERING

DESIGN OF A GEAR DRIVE CLASS NOTES FOR MECHANICAL ENGINEERING Gear is one of the most important part of each machinery. It controls different speeds during power transmission. There are different types of gears. Each is for a specific service. Most simple gear is spur gear. Gear design guidelines results in a sound and safe…

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APPLICATIONS OF STEELS CLASS NOTES FOR MECHANICAL ENGINEERING

APPLICATIONS OF STEELS  CLASS NOTES FOR  MECHANICAL ENGINEERING  FERROUS STEELS                   Structural steel    Non- structural steel Carbon steels With C < 0.8 % Low Alloy Steel with alloying elements < 10 % High Alloy Steel with alloying elements > 10 % Tool Steel with C > 0.9 % &C< 1.5 % Die steel  with C >1.5…

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DESIGN OF THIN PRESSURE VESSELS FOR MECHANICAL ENGINEERS

  DESIGN OF THIN PRESSURE VESSELS FOR MECHANICAL ENGINEERS Thin vessels are common to process industries. Examples of thin vessels are LPG cylinder, boiler and distillation column. Stresses are uniform in a thin shell. Radial stress is neglected as compared to hoop and longitudinal stresses. Most common material of construction is flange quality steel. These…

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DISCONTINUITY STRESS CLASS NOTES FOR MECHANICAL ENGINEERING

DISCONTINUITY STRESS CLASS NOTES FOR MECHANICAL ENGINEERING There are various types of discontinuities. A designer first establishes  the type of discontinuity. He calculates the discontinuity stress. These stresses are considered in the design of pressure vessels /pipes and structures. Two types of discontinuities (i)  Gross structural discontinuity (ii)  Local  structural discontinuity Gross Structural Discontinuity A…