Download PDF
Free download in PDF IC Engine Multiple Choice Questions with Answers for competitive exams. These short objective type questions with answers are very important for competitive exams as well as Board exams. These short solved questions or quizzes are provided by Gkseries.
61
Which of the following is false statement :
Excess quantities of sulphur in diesel fuel are Objectionable because it may cause the following
[A]
piston ring and cylinder wear
[B]
formation of hard coating on piston skirts
[C]
oil sludge in the engine crank case
[D]
detonation
62
The actual volume of fresh charge admitted in 4-stroke petrol engine is
[A]
equal to stroke volume
[B]
equal to stroke volume and clearance volume
[C]
less than stroke volume
[D]
more than stroke volume
Answer: less than stroke volume
63
The magneto in an automobile is basically
[A]
transformer
[B]
d.c. generator
[C]
capacitor
[D]
magnetic circuit
64
The reason for supercharging in any engine is to
[A]
increase efficiency
[B]
increase power
[C]
reduce weight and bulk for a given out-put
[D]
effect fuel economy
Answer: reduce weight and bulk for a given out-put
65
Supercharging is essential in
[A]
diesel engines
[B]
gas turbines
[C]
petrol engines
[D]
aircraft engines
66
Flash point of fuel oil is
[A]
minimum temperature to which1 oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
[B]
temperature at which it solidifies or congeals
[C]
temperature at which it catches fire without external aid
[D]
none of the above
Answer: minimum temperature to which1 oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
67
For the same power developed in I.C. engines, the cheaper system is
[A]
naturally aspirated
[B]
supercharged
[C]
centrifugal pump
[D]
turbo charger
68
Scavenging is usually done to increase
[A]
thermal efficiency
[B]
speed
[C]
power output
[D]
fuel consumption
69
The theoretically correct air fuel ratio for petrol engine is of the order of
[A]
6 : 1
[B]
9 : 1
[C]
12 : 1
[D]
15 : 1
70
Air fuel ratio at which a petrol engine can not work is
[A]
8 : 1
[B]
10 : 1
[C]
15 : 1
[D]
20 : 1 and less
Please share this page