Mechanical Engineers

Have you ever wondered ? Why capacity of domestic refrigerator and Air Conditioner (AC) is different though both are refrigeration system? What is the basic difference between them with respect to the cooling capacity? The capacity of domestic refrigerator is normally rated in 'Litre'. Litre actually a unit of volume and it is also applicable to the domestic refrigerator while dealing with space to be cooled. Thus, litre capacity actually indicates the volume or space to be cooled by domestic refrigerator. On the other hand, capacity of Air Conditioner (AC) is given by term 'Ton'. Now, this term,   What is one Ton refrigeration? 'Ton' is actually a name given to amount of heat to be extracted from 1 short ton (907.18474 kg) of water at 0 degree C to convert it to ice at the same temperature in 24 hours. (Note: 1 large ton = 1016.0469 kg, 1 metric ton = Tonne = 1000 kg) In other words, refrigeration rate required to freeze 1 ton of wa...

Mechanical Engineering Interview Questions and answers for freshers on design, safety and maintenance. 1) What is an accident ? An accident is a unexpected and unforeseen event which may or may not injury to a person or a machine tool. 2) What are the standard sizes of drawing board as per Indian Standards? As per Indian Standards :1250×900,900×650,650×500,500×350,350×250 sizes are available. 3) What are the functions of a scale ? (a) To measure distance accurately. (b) For making drawing to scale either in full size, reduced size or enlarged size. 4) What is a sketching ? This is freehand expression of the graphic language. 5) What do you mean by First Aid ? First Aid is immediate and temporary care given to a person who affected accidental injury or a sudden illness before the arrival of doctor. 6) What is a Drawing ? It is a graphical representation of a real thing to define and specify the shape and size of a particular object by means of lines...