A. leaking piston rings
B. use of thick head gasket
C. clogged air-inlet slots
D. increase in clearance volume caused b bearing-bushing wear
E. all of the above
Correct Answer: all of the above ✔
Last Updated: January 27, 2019
Related MCQs
- The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed__________?
- Combustion in compression ignition engines is__________?
- The thermal efficiecny of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will__________?
- If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the %age increase in efficiency will be__________?
- The pressure at the end of compression in the case of diesel engine is of the order of__________?
- In a typical medium speed 4-stroke cycle diesel engine the inlet valve__________?
- An engine indicator is used to determine the following__________?
- If the intake air temperature of I.C. engine increases, its efficiency will__________?
- The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called__________?
- In a diesel engine, the fuel is ignited by__________?
- The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is__________?
- Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged ?
- Scavenging air in diesel engine means__________?
- The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft__________?
- The knock in diesel engine occurs due to__________?
- Diesel engine can work on very lean air fuel ratio of the order of 30 : 1. A petrol engine can also work on such a lean ratio provided__________?
- A diesel engine has__________?
- A hmh flame speed is obtained in diesel engine when air fuel ratio is__________?
- Volatility of diesel fuel oil is__________?
- A 5 BHP engine running at full load would consume diesel of the order of__________?
- The following volume of air is required for consuming 1 liter of fuel by a four stroke engine__________?
- Air fuel ratio at which a petrol engine can not work is__________?
- The theoretically correct air fuel ratio for petrol engine is of the order of__________?
- Scavenging is usually done to increase__________?
- For the same power developed in I.C. engines, the cheaper system is__________?
- Flash point of fuel oil is __________?
- The operation of forcing additional air under pressure in the engine cylinder is known as__________?
- The magneto in an automobile is basically__________?
- Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows __________?
- In a cycle, the spark lasts roughly for __________?
- A diesel engine as compared to petrol engine (both running ar rated load) is __________?
- Most high speed compression engines operate on __________?
- The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at __________?
- The term scavenging is generally associated with__________?
- Fuel consumption of diesef engines is not guaranteed at one quarter load because at such low loads__________?
- A heat engine utilises the__________?
- The rating of a diesel engine, with increase in airintlet temperature, will __________?
- In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of__________?
- In a typical medium speed, 4-stroke cycle diesel engine __________?
- Which of the following medium is compressed in a Diesel engine cylinder __________?
- As a result of detonation in an I.C. engine, following parameter attains very high value __________?
- Most high speed compression engines operate on __________?
- For the same compression ratio__________?
- It the temperature of intake air in IC engines is lowered, then its efficiency will__________?
- If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the__________?
- The inlet value of a four stroke cycle I.C engine remains open for nearly__________?
- The specific fuel consumption per BH hour for a petrol engine is approximately__________?
- Crankcase explosion in I.C. engines usuall occurs as __________?
- The maximum temperature in the I.C. engine cylinder is of the order of __________?
- The fuel in diesel engine is normally injected at pressure of__________?
- The pressure and temperature at the end of compression stroke in a petrol engine are of the order of__________?