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Internal combustion engine
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Scavenging air in diesel engine means. air used for forcing burnt gases out of engine's cylinder during the exhaust period [other wrong options] [Discuss in forum] |
| Q2 ⇒ An engine indicator is used to determine the following. m.e.p. and I.H.P. [other wrong options] [Discuss in forum] |
| Q3 ⇒ Pick up the wrong statement. petrol engines occupy more space than diesel engines for same power output [other wrong options] [Discuss in forum] |
| Q4 ⇒ Compression ratio of LC. engines is. the ratio of volumes of air in cylinder before compression stroke and after compression stroke [other wrong options] [Discuss in forum] |
| Q5 ⇒ The inlet value of a four stroke cycle I.C engine remains open for nearly. 235° [other wrong options] [Discuss in forum] |
| Q6 ⇒ In a typical medium speed 4-stroke cycle diesel engine the inlet valve. opens at 20° before top dead center and closes at 35° after the bottom dead center [other wrong options] [Discuss in forum] |
| Q7 ⇒ As a result of detonation in an I.C. engine, following parameter attains very high value. rate of rise of pressure [other wrong options] [Discuss in forum] |
| Q8 ⇒ The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed. 180°C [other wrong options] [Discuss in forum] |
| Q9 ⇒ When crude oil is heated, then which of the following hydrocarbon is given off first. natural gas. [other wrong options] [Discuss in forum] |
| Q10 ⇒ The output of a diesel engine can be increased without increasing the engine revolution or size in following way. supercharging. [other wrong options] [Discuss in forum] |
| Q11 ⇒ The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at. 750 rpm [other wrong options] [Discuss in forum] |
| Q12 ⇒ Which of the following medium is compressed in a Diesel engine cylinder. air aione [other wrong options] [Discuss in forum] |
| Q13 ⇒ The fuel air ratio in a petrol engine fitted with suction carburetor, operating with dirty air filter as compared to clean filter will be. higher [other wrong options] [Discuss in forum] |
| Q14 ⇒ The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft 2 [other wrong options] [Discuss in forum] |
| Q15 ⇒ Gaseous-fuel guarantees are based on. low heat value of oil [other wrong options] [Discuss in forum] |
| Q16 ⇒ 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 [other wrong options] [Discuss in forum] |
| Q17 ⇒ In a diesel engine, the fuel is ignited by heat resulting from compressing air that is supplied for combustion [other wrong options] [Discuss in forum] |
| Q18 ⇒ A diesel engine as compared to petrol engine (both running ar rated load) is. more efficient [other wrong options] [Discuss in forum] |
| Q19 ⇒ For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of. 12 : 1 [other wrong options] [Discuss in forum] |
| Q20 ⇒ Scavenging air in diesel engine means air used for forcing burnt gases out of engine's cylinder during the exhaust period [other wrong options] [Discuss in forum] |
| Or |