Two-stroke Basics This is what a two-stroke engine looks like: Task 1 A) provider %share total number of subscribers Vodaphone 29 40, 000 000 / 100 = 11. 600, 00 Cellnet 26 40, 000 000 / 100 = 10. 400, 00 Orange 24 40, 000 000 / 100 = 9. 600, 00 One 2 one 21 40, 000 000 / 100 = 8. 400. 000 100 Calculation of % of population that subscribes to each network.
B) Vodafone 11. 600, 00/60. 000, 000 100 = 19. 3 % = 19 % to nearest whole number Cellnet 10. 400, 000/60. 000, 000 100 = 17.
3% = 17% Orange 96. 000, 000/60. 000, 000 100 = 16% One 2 One 84. 000, 000/60. 000.
000 100 = 14% Task 2 People A) Vodaphone = 5 Cellnet = 5 Orange = 5 1 2 1 = 5 Total 20 people Length of ownership in months Vodaphone 3, 4, 5, 6, 7 = 5 people Cellnet 3, 4, 5, 6, 7 = 5 Orange 36, 5, 4, 15, 18 = 5 1 2 1 6, 40, 7, 1, 0 = 5 Task 2 B) % share of subscribers to each network. 5/20 100 = 25% Vodaphone 5/20 100 = 25% Cellnet 5/20 100 = 25% Orange 5/20 100 = 25% 1 2 1 C) Range (time in months) 3 mts lowest 40 mts hightest Vodaphone = 3+4+5+6+7 = 25 Cell ent = 3+4+5+6+7 = 25 = 25 Orange = 36+5+4+15+18 = 78 1 2 1 = 6+40+7+1+10 = 64 = 192/20 = 10 Task 3 Daily calls 15 mins are free to own network 15 mins are free to other networks 10 mins are free 7 pm 10 pm own networks 5 mins to own net works 7 pm 10 pm 5 mins 5 p = 25 p 15 mins to other net works 7 pm 10 pm 15 mins 25 p = 3. 75 p Daily cost 15 mins free to own network = free 15 mins free to other networks = free 10 mins free to other networks 7 pm 10 am = free 5 mins free to other networks 7 pm 10 am 5 mins 2. 5 p 15 mins to own network 7 pm 10 pm = 15 mins 5 p = lb 1. 25 = 75 p Daily costs You find two-stroke engines in such devices as chain saws and jet skis because two-stroke engines have three important advantages over four-stroke engines: Two-stroke engines do not have valves, which simplifies their construction and lowers their weight. Two-stroke engines fire once every revolution, while four-stroke engines fire once every other revolution.
The Essay on Free Trade
The American people are extremely fortunate. Two hundred years ago, their Founding Fathers used the Constitution to prohibit American government officials from ever enacting trade and immigration restrictions between the respective states of the Union. This meant that the farmers of any state could buy and sell goods and services with the farmers of any other state, without tariffs or import ...
This gives two-stroke engines a significant power boost. Two-stroke engines can work in any orientation, which can be important in something like a chainsaw. A standard four-stroke engine may have problems with oil flow unless it is upright, and solving this problem can add complexity to the engine. Horsepower For a complete explanation of what horsepower is and what it means to performance, check out How Horsepower Works. These advantages make two-stroke engines lighter, simpler and less expensive to manufacture. Two-stroke engines also have the potential to pack about twice the power into the same space because there are twice as many power strokes per revolution.
The combination of light weight and twice the power gives two-stroke engines a great power-to-weight ratio compared to many four-stroke engine designs. You don’t normally see two-stroke engines in cars, however. That’s because two-stroke engines have a couple of significant disadvantages that will make more sense once we look at how it operates.
