advantages

The advantages associate with digital communication systems include (i) A common format for encoding different kinds of message signals (e.g., speech signal, video signal, computer data, etc.) for the purpose of transmission. (ii) An improved security of message. (iii) Increased immunity..

The offsprings are genetically identical and therefore advantageous traits can be preserved. Only one parent is required which eliminates the need for special mechanisms such as pollination, etc. It is faster. For example, bacteria can multiply every 20 minutes. This helps the organis..

The offsprings are genetically identical and therefore advantageous traits can be preserved. Only one parent is required which eliminates the need for special mechanisms such as pollination, etc. It is faster. For example, bacteria can multiply every 20 minutes. This helps the org..

1) Safer than radiography as there is no exposure to radiation. 2) Non-invasive and painless. 3) Comfortable and inexpensiv..

an indefinite number of plants can be raised from a small mass of parental tissue. It is useful for obtaining virus free healthy plants. An unlimited number of plants are produced within a relatively short time..

They give better thrust than solid propellants By propellant flow regulation, thrust can be controlled A mixture of liquid oxygen and liquid hydrogen is one of the most important liquid propellants. Oxygen burns liquid hydrogen to produce heat energy. Liquid propellant examples are alcohols,..

1) More efficient than conventional cells because the energy of the fuel is converted directly into electric energy. Efficiency = 60-70%. 2) They are free from polluti..

The demand for electricity varies at different times of a year. One big disadvantage is that the wind, waves and tides do not occur at all time and hence cannot guarantee steady production of electricity. Hydroelectric power stations can solve this problem. When the demand is low, excess power gene..

Friction aids walking. Our feet pushes the floor back and the floor pushes our feet forward, by using friction to do so (every action has equal and opposite reaction). Friction between tyres of vehicles and the road make controlled motion possible. Many machine parts stay in place and are a..

It can be used to measure temperature accurately because of its electrical nature and a wide range of temperature difference(0.001K - 2000K) It absorbs a very small amount of heat from the object and therefore does not change the temperature to be measured. As the thermal capacity is low, i..