Gyroscopic effect on airplane:

Gyroroscope effect will usefull in determining the direction in wich the aeroplane nose and tale will move while taking a turn in either direction like left or right ...it have several conditions...like if we are noticing from the rare side(back side) whn the plan take a left cut ..and the rotter of the plan is moving in the clockwise direction..then the nose get up and the tail goes down...because of the active and reavtive gyroscopic couple fore which are acting in opposite direction and equal in magnitude...
(2)-if plan takes a right turn in the same conditions the action of the tail and nose will be the vice versa of the 1st result...
if rotter in moving in anticlock wise direction...then the result 1st and 2nd will be the vice versa ...
(3)-condition 2nd...if we notice it from the front the all results are oppsite...for e.g if plane turns left then the nose get down and tail gets down in direction ......so nw u can get all result by transforming them into the jst opposite to the results of the condition 1st...results

Significance of governor in automobiles:

Governor is an important component of automobile engine. It is used to regulate the main speed of engine during the variations in loads. With the variations in the load, fuel supply has to be maintained. This task is performed by the governor. In the case of high load on the engine, speed decreases, hence fuel supply has to be increased and similarly when load decreases then the fuel supply has to be decreased.

Electrochemical machining (ECM)

It is a method of removing metal by an electrochemical process. It is normally used for mass production and is used for working extremely hard materials or materials that are difficult to machine using conventional methods. Its use is limited to electrically conductive materials. ECM can cut small or odd-shaped angles, intricate contours or cavities in hard and exotic metals, such as titanium aluminides, Inconel, Waspaloy, and high nickel, cobalt, and rhenium alloys. Both external and internal geometries can be machined.

ECM is often characterized as "reverse electroplating," in that it removes material instead of adding it.

Working of air conditioners in cars:

Air conditioners are based on the principles of evaporation and condensation and then compression and expansion. The hot air of the car is removed by the process of evaporation and then the condensation of the evaporated air takes places which is then further compressed by the compressor and then finally expanded to us in the form of cold breeze. Somehow, Air conditioning reduces the average of the car, as the energy is required to remove the hot air and then compression and expansion.