Answer Posted / rv

In a 4 stroke engine, we have a dedicated system for lubrication. We have lubricating ports which supply the lubricating oil from the sump so that all the parts are thoroughly cooled. But, most small petrol two-stroke engines cannot be lubricated by oil contained in their crankcase and sump, since the crankcase is already being used to pump fuel-air mixture into the cylinder. So while fueling, we mix gasoline with an oil to be distributed throughout the engine for lubrication. The two-stroke oil is ultimately burned along with the fuel. But i=this can contribute to more smoke and distinctive odor.

Tell me which has more efficiency: Diesel engine or Petrol engine.

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Define Octane number and Cetane number

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What is sae?

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Why front wheel is bigger than rear wheel in tractor?

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Why oil with petrol can be used in two stroke engines but not in four stroke engines (two wheelers)?

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Who invented the four stroke engine? According to you which is more efficient four stroke or two stroke engine and why?

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How are calculate the Speedometer ratio in the vehicle?

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State two to three differences between two stroke and four stroke engine?

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Single reduction is used in final drive when it is about a) 6:1 b) 8:1 c) 10:1 d) 12:1

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Why dtsi technology is used in motor bikes?

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If we use gasoline in diesel engine, what will happen?

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What do you understand by cc of engine?

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The resistance to the vehicle motion whose magnitude various with the square of the vehicle speed is a) Resistance due to gradient b) Resistance due to road c) Resistance due to the tyre friction d) Resistance due to wind

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What will happen if wrong fuel is burnt in engine?

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The Figure 1 depicts a) Top gear b) Second gear c) First gear d) Reverse gear

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