Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part3 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.Pick up the wrong statement about supercharging |
| supercharging reduces knocking in diesel engines |
| there can be limited supercharging in petrol engines because of detonation |
| supercharging at high altitudes is essential |
| supercharging results in fuel economy |
| supercharging is essential in aircraft engines. |
2.Engine pistons 'are usually made of aluminum alloy because it |
| is lighter |
| wears less |
| absorbs shocks |
| is stronger |
| does not react with fuel and lub oil. |
3.The actual volume of fresh charge admitted in 4-stroke petrol engine is |
| equal to stroke volume |
| equal to stroke volume and clearance volume |
| less than stroke volume |
| more than stroke volume |
| more than cylinder volume. |
4.In diesel engine, the compression ratio in comparison to expansion ratio is |
| same |
| less |
| more |
| variable |
| more/less depending on engine capacity. |
5.Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows |
| using additives in the fuel |
| engine derating i.e. reducing the maxi-mum flow of fuel |
| increasing the compression ratio |
| adherence to proper fuel specification |
| avoidance of overloading. |
More Ic Engines QUESTIONS AND ANSWERS available in next pages
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