Ic Engines QUESTIONS AND ANSWERS

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