| 1. | The volumetric efficiency of a well designed engine may be ? | |
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30 to 40%
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40 to 60%
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60 to 70%
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75 to 90%
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Report Question| 2. | Which of the following statement is wrong ? | |
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A four stroke cycle engine develops twice the power as that of a two stroke cycle engine
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For the same power developed, a four stroke cycle engine is lighter, less bulky and occupies less floor area
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The petrol engines are costly than diesel engines
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all of the above
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| 3. | The colour of exhaust from diesel engine is generally ? | |
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white
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bluish
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black
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violent
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| 4. | The reflectivity depends upon ? | |
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geometry of the reflector
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energy of neutrons
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properties of the reflector
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all of these
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| 5. | The knocking tendency in compression ignition engines for a given fuel will be ? | |
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enhanced by decreasing compression ratio
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enhanced by increasing compression ratio
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dependent on other factors
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none of the above
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| 6. | Morse test is used to determine the I.P. of a ? | |
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single cylinder petrol engine
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four stroke engine
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single cylinder diesel engine
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multi-cylinder engine
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| 7. | The ratio of the brake power to the indicated power is called ? | |
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mechanical efficiency
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overall efficiency
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indicated thermal efficiency
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volumetric efficiency
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| 8. | The injector nozzle of a compression ignition engine is required to inject fuel at a sufficient high pressure in order to ? | |
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inject fuel in a chamber of high pressure at the end of compression stroke
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inject fuel at a high velocity to facilitate atomisation
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ensure that penetration is not high
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all of the above
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| 9. | In a four stroke cycle diesel engine, the compression ? | |
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starts at 40° after bottom dead centre and ends at 10° before top dead centre
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starts at 40° before top dead centre and ends at 40° after top dead centre
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starts at top dead centre and ends at 40° before bottom dead centre
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may start and end anywhere
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| 10. | The sensing element in the control system of nuclear reactors measure the ..............of the neutron flux in the reactor ? | |
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temperature
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volume
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density
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none of these
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