1. What do you mean by REFRIGERATION? Ans. It is the process of transfering heat from low temperature region to high temperature region . 2. What do you mean by term REFRIGERATOR ? Ans. It is device the produces refrigeration . 3. What is the most common and frequently used REFRIGERATION CYCLE ? Ans. VAPOUR -COMPRESSION REFRIGERATION CYCLE. In which refrigerant is vapourised and condensed alternately . Refrigerant is compressed in vapour phase . 4. What are the various REFRIGERATION CYCLE ? Ans. a. VAPOUR -COMPRESSION REFRIGERATION CYCLE b. GAS REFRIGERATION CYCLE in which refrigerant is in gasious phase throughout the cycle. c. Cascade Refrigeration cycle in which more than one refrigerant is used . d. Vapour Absorption Refrigeration cycle in which refrigerant is mixed in liquid before it is compressed. e. ...
There are mainly three types of electrical faults . 1. Earth fault 2. Short circuit fault 3. Open circuit fault 1. Earth fault It happens due to breaking of insulation of wire and conductor of wire comes in contact with ships hull or in the contact of body /enclosure . B is point marked as shown in figure. 2. Short circuit fault When insulation breaks at two points of same wire or two different wire then very high short circuit current flow through the circuit and it damages the electrical loads . C is point marked as shown in figure. 3. Open circuit fault When conductor of wire breaks due to mechanical damages or loose connection . A is point marked as shown in figure. Source: Dennis T. Hall
It is an international maritime convention for marine pollution. It came in 1973 while major amendment has adopted between 1976 and 1978 due major oil spillage of oil tanker s. And hence it is called 73/78.