Mechanical Engineering Questions And Answers :: Ic Engines: part4



Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part4 : 21 to 25

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

21.The knock in diesel engine occurs due to

instantaneous and rapid burning of the first part of the charge
instantaneous atuo iginition of last part of charge
delayed burning of the first part of the charge
reduction of delay period
all of the above.

22.Volatility of diesel fuel oil is

minimum temperature to which oil is heated in order to give off inflam�mable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
temperature at which it solidifies or congeals
it catches fire without external aid
indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off
temperature at which it flows easily.

23.Which is more viscous lib oil

SEA 30
SAE 40
SAE 50
SAE 70
SAE 80.

More Ic Engines QUESTIONS AND ANSWERS available in next pages

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