Petroleum Refinery Engineering Choose the correct statement regarding thermal cracking. At low pressure, the yield of lighter hydrocarbons are more Increased residence time results in the decreased severity of cracking Greater depth of cracking gives lower octane number gasoline Moderate changes in operating temperature does not change the depth of cracking At low pressure, the yield of lighter hydrocarbons are more Increased residence time results in the decreased severity of cracking Greater depth of cracking gives lower octane number gasoline Moderate changes in operating temperature does not change the depth of cracking ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to Maintain the reaction temperature Obviate catalyst poisoning Hydrogenate the feed stock Sustain the reactor pressure Maintain the reaction temperature Obviate catalyst poisoning Hydrogenate the feed stock Sustain the reactor pressure ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm² . 12 3 1.5 6 12 3 1.5 6 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Diesel index.(an alternative index for expressing the quality of diesel) is All of these Determined by using a test engine Equal to cetane number plus 3 Not related to aniline point All of these Determined by using a test engine Equal to cetane number plus 3 Not related to aniline point ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering The characterisation factor of crude petroleum oil is around 11 3 22 28 11 3 22 28 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which one is preferred for aircraft engine? Low viscosity index lube oil High freezing point aviation fuel None of these High viscosity index lube oil Low viscosity index lube oil High freezing point aviation fuel None of these High viscosity index lube oil ANSWER DOWNLOAD EXAMIANS APP
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