Otto four stroke cycle The petrol engi es work on the principle of theoretical Otto cycle, also known as constant volume cycle, shown in fig.  A four stroke petrol engine is shown in

Diesel four stroke cycle The diesel engines work on the principle of Diesel cycle, also called constant pressiure SUction, compression, power, and exhaust strokes. Fig.  shows the working and construction of a four

Bucket or Barrel Calorimeter  This method of measuring the dryness fraction of steam is not exact method (a) Construction:  The apparatus shown in Fig. 4.4 consists of a copper calorimeter which is placed

Ozone Depletion  The atmosphere of the Earth is divided into 5 laverrs, From closest to farthest layers are troposphere.stratosphere, mesosphere, thermosphere and exosphere.  The majority of dhs msphere's pzone remains stratosphere, whichextends from