| 1. | The injection pressure in a diesel engine is about ? | |
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10 bar
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100 bar
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150 bar
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500 bar
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Report Question| 2. | The method of determination of indicated power of a multi cylinder spark ignition engine is by the use of ? | |
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Morse test
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prony brake test
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motoring test
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heat balance test
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| 3. | A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of ? | |
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75% iso-octane and 25% normal heptane
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75% normal heptane and 25% iso-octane
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75% petrol and 25% diesel
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75% diesel and 25% petrol
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| 4. | The object of supercharging the engine is ? | |
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to reduce mass of the engine per brake power
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to reduce space occupied by the engine
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to increase the power output of an engine when greater power is required
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all of the above
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| 5. | The scavenging efficiency of a tour stroke cycle diesel engine is ? | |
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below 50%
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between 50 and 85%
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between 85 and 95%
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between 95 and 100%
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| 6. | The maximum propulsive efficiency of a turbo-jet engine is at a speed of ? | |
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1000 km/h
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2000 km/h
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2400 km/h
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3000 km/h
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| 7. | Diesel as compared to petrol is ? | |
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highly ignitable
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more difficult to ignite
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less difficult to ignite
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none of these
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| 8. | The reference fuels for knock rating of spark ignition engines would include ? | |
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iso-octane and alpha-methyl naphthalene
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normal octane and aniline
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iso-octane and normal hexane
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normal heptane and iso-octane
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| 9. | The increase of efficiency of a compression ignition engine, as the load decreases, is due to ? | |
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higher maximum temperature
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qualitative governing
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quantitative governing
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hit and miss governing
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| 10. | The object of providing masked inlet valve in the air passage of compression ignition engine is to ? | |
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enhance flow rate
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control air flow
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induce primary swirl
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induce secondary turbulence
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