| 1. | At which pressure (in kg/cm²) the properties of water and steam become identical ? | |
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0.1
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1
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100
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225.6
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View Answer
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Report Question| 2. | Cochran boiler is a ? | |
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horizontal fire-tube boiler
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horizontal water-tube boiler
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vertical water-tube boiler
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vertical fire tube boiler
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| 3. | The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is ? | |
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more
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less
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same
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could be more or less depending on other factors
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| 4. | Supercharging is the process of ? | |
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supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
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providing forced cooling air
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injecting excess fuel for raising more load
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supplying compressed air to remove combustion products fully
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| 5. | The accumulation of carbon in a cylinder results in increase of ? | |
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clearance volume
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volumetric efficiency
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ignition time
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effective compression ratio
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| 6. | Which of the following is a false statement Excess quantities of Sulphur in diesel fuel are objectionable because it may cause the following ? | |
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piston ring and cylinder wear
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formation of hard coating on piston skirts
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oil sludge in the engine crank case
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detonation
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| 7. | Installation of supercharger on a four-cycle diesel engine can result in the following percentage increase in power ? | |
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upto 25%
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upto 35%
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upto 50%
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None of these
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| 8. | In order to prevent formation of carbon on the injector, the temperature (in °C) of nozzle tip should be ? | |
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less than 100
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between 100 – 250
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between 250 – 300
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between 400 – 500
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| 9. | What kind of contact can be established for a higher pair ? | |
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Point contact
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Surface contact
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No contact
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None of these
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| 10. | How many degrees of freedom exist in a free body in space ? | |
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3
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4
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5
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6
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