Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part2 : 11 to 15
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
11.The rating of a diesel engine, with increase in air-intlet temperature, will |
| increase linearly |
| decrease linearly |
| increase parabolically |
| decrease parabolically |
| first decrease linearly and then increase parabolically. |
12.In a typical medium speed, 4-stroke cycle diesel engine |
| fuel injection starts at 10� before to dead center and ends at 20� after tor dead center |
| fuel injection starts at top dead center and ends at 20� after top dead center |
| fuel injection starts at just before top dead center and ends just after top dead center |
| may start and end anywhere |
| none of the above. |
13.Compression loss in I.C engines occurs duto |
| leaking piston rings |
| use of thick head gasket |
| clogged air-inlet slots |
| increase in clearance volume caused b bearing-bushing wear |
| all of the above. |
14.In a typical medium speed 4-stroke cycle diesel engine |
| compression starts at 35� after bottom dead center and ends at top dead center |
| compression starts at bottom dead center and ends at top dead center |
| compression starts at 10� before bottom dead center and, ends just before top dead center |
| may start and end anywhere |
| none of the above. |
15.If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the |
| exhaust will be smoky |
| piston rings would stick into piston grooves |
| exhaust temperature will be high |
| engine starts overheating |
| scavenging occurs. |
More Ic Engines QUESTIONS AND ANSWERS available in next pages
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