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Mechanical Engineering Objective Questions { Internal Combustion Engines }



99. Ignition quality of petrol is expressed by
A.Octane number
B.Cetane number
C.Calorific value
D.Self ignition temperature

100. Petrol is distilled at a temperature in range of
A.30 - 65C
B.65 - 220C
C.220 - 350C
D.350 - 450C

101. Kerosene is distilled at
A.30 - 65C
B.65 - 220C
C.220 - 350C
D.350 - 450C

102. Self-ignition temperature of petrol is of the order of
A.150C
B.More than 500C
C.370C
D.450C

103. Iso-octane
A.Has octane number of 0
B.Has octane number of 50
C.Has octane number of 100
D.Is an index of detonation quality

104. Octane number is determined by comparing the performance of the petrol with the following hydrocarbons
A.Iso-octane
B.Mixture of normal heptane and iso-octane
C.Alpha methyl napthalene
D.Mixture of methane and ethane

105. Cetane
A.Has zero cetane number
B.Has 100 cetane number
C.Helps detonation
D.Is a straight chain paraffin

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