Basic Mechanical Engineering (3110006) MCQs

MCQs of Internal Combustion Engines

Showing 31 to 40 out of 47 Questions
1 2 3 4 5
31.
The mechanical efficiency is more for
(a) four-stroke engine
(b) gas engine
(c) steam engine
(d) two-stroke engine
Answer:

Option (d)

32.
The two-stroke engine compared to four-stroke engines require
(a) smaller flywheel
(b) bigger flywheel
(c) same flywheel
(d) no flywheel
Answer:

Option (a)

33.
The power developed by the combustion of fuel inside the engine cylinder is called
(a) specific power
(b) brake power
(c) indicated power
(d) none of the above
Answer:

Option (c)

34.
Brake power is
(a) the power available at engine crankshaft for doing useful work
(b) the power developed by the combustion of fuel inside the engine cylinder is called
(c) the power lost due to friction
(d) difference between indicated power and brake power
Answer:

Option (a)

35.
The dynamometer is used to measure
(a) friction power
(b) indicated power
(c) brake power
(d) engine speed
Answer:

Option (c)

36.
Friction Power (F.P) is equal to
(a) I.P x B.P
(b) I.P /B.P
(c) I.P + B.P
(d) I.P – B.P
Answer:

Option (d)

37.
Air standard efficiency of an I.C. engine depends on
(a) compression ratio
(b) speed of crankshaft
(c) fuel used
(d) all of the above
Answer:

Option (a)

38.
The ratio of indicated thermal efficiency to air standard efficiency is called
(a) mechanical efficiency
(b) thermal efficiency
(c) air standard efficiency
(d) relative efficiency
Answer:

Option (d)

39.
The brake specific fuel combustion in case of I.C. engine given by
(a) mass of fuel/brake power
(b) mass of fuel/indicated power
(c) mass of fuel/friction power
(d) none of the above
Answer:

Option (a)

40.
In an IC engine, from which of the following source of energy is converted into mechanical energy
(a) chemical energy of fuel
(b) potential energy
(c) kinetic energy
(d) all of the above
Answer:

Option (a)

Showing 31 to 40 out of 47 Questions
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