Why different types of sound are produced in different bikes though they say run on SI engine?
Engine specifications are different in different manufactures like as bore diameter(cc),ignition timing.Also the exhaust passage take more responsible for sound.
Why entropy decreases with the increase in temperature?
ds=dQ/T
Entropy is inversely proportional to the temperature so.as temp. increases,entropy decreases
Entropy is inversely proportional to the temperature so.as temp. increases,entropy decreases
What type of metal is used in a propeller?
Aluminium,stainless steel,magnesium bronze,NIBRAL(nickel,brass,aluminium)
Why involute curve used in gear?
1) it’s smooth to drive the gear. 2) in gears contact is only point, this type is curve take the more load than normal one
How Trains take turns, though there is no any differential?
Purpose of the differential is to enable vehicles to take turn, by allowing both the wheel to rotate with different speed. This is required when wheels, like in car, are connected with same axle. Interestingly, wheel in trains are not connected with the axle, they are independent and hence can take turns without ant differential. This is same as how the bullock cart takes turns, without any differential.
Why freezer in the fridge is placed in top level?
Because density of cold air is higher than warm air,hence it is placed at top.Cold air comes downward & cool the bottom part.
what is more dangerous longitudinal stress or Hoop stress and why?
Hoop stress is more dangerous than longitudinal stress, because the dangerous area coming under the hoop stress is circumferential,while in longitudinal,the axial area will come under dangerous area will will be less than circumferential area.So the hoop stress is more dangerous than longitudinal stress
Explain the reason that why big tyres are used in rear of vehicles?
Large tyres provide larger surface area touching the ground, thus providing the more pulling power. Basically tractors have larger rear tyres because tractors don’t have to operate at higher speeds, thus getting the same ground speed with larger tyres. Moreover gear ratios don’t have to be as high as b/c of the tyres.
What is kingpin offset? State some of its application.
The kingpin offset is the part, basically called as pivot used in the steering of the vehicles. This offset helps in rotating of the steering and thus it’s very useful in steering mechanism of the cars.
Applications: This is also used to measure scrub radius with the help of geometric parameters of wheel plane above and below ground level.
It provides directional stability to the vehicles when it i combined with the caster.
Applications: This is also used to measure scrub radius with the help of geometric parameters of wheel plane above and below ground level.
It provides directional stability to the vehicles when it i combined with the caster.
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