| 1. | In Diesel engines, the duration between the time of injection and the time ? | |
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spill cut-off
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delay period
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injection period
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ignition period
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Report Question| 2. | Valve overlap is the number of degrees of camshaft rotation during which ? | |
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both valves are closed
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both valves are open
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both 'a' and 'b'
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none of these
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| 3. | The timing belt is attached to the camshaft pulley and ? | |
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timing belt drive pulley
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distributor
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radiator fan pulley
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alternator pulley
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| 4. | The characteristic that is enhanced by the use of cylinder sleeves is ? | |
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cooling efficiency
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resistance to wear
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lubrication performance
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none of these
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| 5. | The octane number of compressed natural gas (CNG) is ? | |
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90
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100
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110
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120
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| 6. | Instead of valves, the ports are used in case of ? | |
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four stroke I.C. engines
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two-stroke I.C. engines
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V-6 engines
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none of these
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| 7. | The function of a second ring is that it is a ? | |
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back up compression ring which will work in place of the top ring when it is broken
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compression ring and aids the top ring in sealing and cooling
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back up oil control ring which will work in place of the bottom ring when it is broken
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cushion ring which prevents piston slap and knock
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| 8. | In case of a Diesel car, the pressure at the end of compression is of the order ? | |
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15 bar
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25 bar
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35 bar
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45 bar
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| 9. | In an engine, the temperature of the piston will be more at the ? | |
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crown of the piston
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skirt of the piston
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piston walls
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piston rings
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| 10. | In a four stroke engine for each crankshaft revolution, the camshaft revolves ? | |
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one-half turn
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one turn
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two turns
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tour turns
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