Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part3 : 6 to 10
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.The term scavenging is generally associated with |
| 2-stroke cycle engines |
| 4-stroke cycle engines |
| aeroplane engines |
| diesel engines |
| high efficiency engines. |
7.The size of inlet valve of.an engine in comparison to exhaust valve is |
| more |
| less |
| same |
| more/less depending on capacity of engine |
| varies from design to design. |
8.A diesel engine as compared to petrol engine (both running ar rated load) is |
| more efficient |
| less efficient |
| equally efficient |
| unpredictable |
| other factors will decide it. |
9.Flash point of fuel oil is |
| minimum temperature to which1 oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame |
| temperature at which it solidifies or congeals |
| temperature at which it catches fire without external aid |
| indicated by 90% distillation temperature, i.e. when 90% of sample oil has distilled off |
| none of the above. |
10.In a typical medium speed 4 stroke cycle diesel engine |
| exhaust valve opens at 35� before bot-tom dead center and closes at 20� after top dead center |
| exhaust valve opens at bottom dead center and closes at top dead center |
| exhaust valve opens just after bottom dead center and closes just before top dead center |
| may open and close anywhere |
| none of the above is true. |
More Ic Engines QUESTIONS AND ANSWERS available in next pages
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