Multiple Choice Questions (MCQ) on Composite Materials 1-Fibers or particles embedded in matrix of another material are the example of (A) an alloy (B) composite material (C) cutting tool material (D) none of the above 2-In matrix based structural composites, the matrix serves the purpose of (A) binding the reinforcement phases in place (B) […]
Read MoreMultiple Choice Questions (MCQ) on Nuclear Reactors 1-Which type of neutrons are more effective in triggering fission? (A) static (B) slow (C) fast (D) any of the above 2-Which of the following is used as primary fuel? (A) Plutonium (B) Uranium (C) U-238 (D) All of the above 3-Following is used as coolant […]
Read MoreLubrication: Every smooth surface has some irregularities in the form of depression and projections. These depressions and projections gets interlocked when two surfaces come in contact. This interlocking will developed resistance, which opposes the motion of one surface over the other. The resistive force is known as force of friction or simply friction. The friction […]
Read MoreHand Forging Process and Types: This operation is performed in the black smithy shop. The work-piece is heated in hearth till forging temperature, brought on anvil and forged by hand hammers and forging tools, to bring it into desired shape. The different types of hand forging operations are Upsetting: This operation is carried out to […]
Read MoreMechanical Engineering Quiz Questions 1-The following is an anti-friction bearing. (A) Ball bearing (B) Roller bearing (C) Needle bearing (D) All of the above 2-The efficiency of self-locking screw jack is always (A) always 100% (B) equal to 50% (C) more than 50% (D) less than 50% 3-Two parallel and co-planar shafts are […]
Read MoreMechanical Engineering MCQ Quiz 1-Knocking tendency in an S.I. engine reduces with increasing (A) Engine speed (B) Super charging (C) Wall temperature (D) Compression ratio 2-Heat calorific value of coal is approximately (A) 9000 – 10500 kcal/kg (B) 5000 – 6500 kcal/kg (C) 2000 – 4000 kcal/kg (D) 1000 – 2000 kcal/kg 3-The […]
Read MoreDifference between Process Layout and Product Layout Functional or Process Layout: In this type of layout, similar kind of machines are arranged at one place to perform the operation. Less capital investment is required. Skilled workers are required. Quality of manufactured product is better. This type of arrangement is preferred for job order production. Better […]
Read MoreSafety precautions in a workshop: – Machine should be operated by an authorized and trained operator. – Do not try to stop the running machine with your hand. Keep your body away from the moving parts. Stop machine before attempting to clean, removing work-piece or tool. – Operator should wear overcoat or apron while working […]
Read MoreMoulding sand: Moulding sand is used in foundry shops in making mould. It in obtained from lakes, rivers, sea and deserts. There are mainly two types of sands used in foundry shop. Natural sand: This type of sand contains sufficient amount of binding clay so there is no need to add binding material to it. […]
Read MoreSeasoning of timber: Seasoning of timber is done to reduce the moisture content in the wood to make so that it becomes suitable for various purposes. It is necessary to remove moisture content before working on wood to prevent it from defects like shrinkage, warping or twisting etc. Advantages of Seasoning: Wood becomes hard and […]
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