Air Conditioner A/C कैसे काम करता हैं , Mechanical engineering

Explain the mechanism of action of restriction endonucleases that makes them suitable for genetic engineering

A body falls towards earth in air. Will its total mechanical energy be conserved during the fall ? Justify.

What would the syllable c denote in the term cDNA used in genetic engineering?

Which of the diagram shown in figures respresents variation of total mechanical energy of a pendulam oscillation in air as function of time?

A sample of air weighing 1.18 g occupies 1.0 xx 10^(3) cm^(3) when kept at 300 K and 1.0 xx 10^(5) pa. When 2.0 cal of heat is added to it constant volume, its temperature increases by 1^@C . Calculate the amount if heat needed to increases the temperature of air by 1^@C at constant pressure if the mechanical equivalent of heat si 4.2 xx 10^(-1) . Assume that air behaves as an ideal gas.

A building connected to a supply of 220 V has 12 ceiling fans of 100 W each, 15 lamps of 20 W each, and 2 air conditioners of 2000 W each. The maximum total current that the building can draw from the supply is _________ A.

The CFCs are used in refrigerators, air conditioners, in the production of plastic foam etc. Which of the following statements are correct ?

Consider a heat engine as shown in figure. Q_(1)and Q_(2) are heat added both to T_(1) and heat taken from T_(2) in one cycle of engine. W is the mechanical work done on the engine. If Wgt0 , then possibilities are

Consider a heat engine as shown in (figure). Q_(1) and Q_(2) are heat added to heat bath T_(1) and heat taken from T_(2) one cycle of engine. W is the mechanical work done on the engine. If Wgt0 , then possibillities are: