IC Engine MCQ Questions

Here you will find IC Engine MCQ Questions which are asked in interviews as well as in Competitive Examinations. Please through these practice test and test your preparation.

Synergy Exam Study Material PDF Compilation – TME / Engine CadetClick Here

 

Practice Test 1

1

IC Engine Practice Set 1

IC Engine Practice Set 1

1 / 20

 A petrol engine, during suction stroke draws

2 / 20

Which of the following does not relate to a spark ignition engine?

3 / 20

The ignition of the charge by some hot surface within the engine before the passage of spark is called

4 / 20

 In a four stroke cycle diesel engine, the compression

5 / 20

The rating of a diesel engine, with increase in air inlet temperature, will

6 / 20

The specific fuel consumption per BHP hour for diesel engine is approximately

7 / 20

Number of working strokes per min. for a two stroke cycle engine is _________ the speed of the engine in r.p.m.

8 / 20

Which one of the following engines will have heavier flywheel than the remaining ones?

9 / 20

The accumulation of carbon in a cylinder results in increase of

10 / 20

Iso-octane (C₈H₁₈) has octane number of

11 / 20

In petrol engines, advancing of the spark timing will _________ the knocking tendency.

12 / 20

By higher octane number of spark ignition fuel, it is meant that the fuel has

13 / 20

The loud pulsating noise heard within the cylinder of an internal combustion engine is known as

14 / 20

The size of inlet valve of an engine in comparison to exhaust valve is

15 / 20

 A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is

16 / 20

A supercharged engine as compared to an ordinary engine

17 / 20

The function of a distributor in a coil ignition system of I.C. engines is

18 / 20

A stoichiometric air-fuel ratio is

19 / 20

The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called

20 / 20

 Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged?

Your score is

The average score is 40%

0%

Practice Test 2

0

IC Engine Practice Set 2

IC Engine Practice Set 2

1 / 20

The cam shaft of a four stroke I.C. engine running at 1500 rpm will run at

2 / 20

A heat engine utilizes the

3 / 20

The inlet valve of a four stroke cycle internal combustion engine remains open for

4 / 20

 In diesel engine, the compression ratio in comparison to expansion ratio is

5 / 20

The higher combustion chamber wall temperature in compression ignition engines will _________ knocking tendency.

6 / 20

Crankcase explosion in I.C. engines usually occurs as

7 / 20

Detonation is harmful due to

8 / 20

 In a typical medium speed, 4-stroke cycle diesel engine

9 / 20

 The combustion in compression ignition engines is

10 / 20

In a naturally aspirated diesel engine, the air is supplied by

11 / 20

 Flash point of fuel oil is

12 / 20

The colour of exhaust from diesel engine is generally

13 / 20

 The fuel in diesel engine is normally injected at pressure of

14 / 20

 Which of the following is false statement? Some of the methods used to reduce diesel smoke are as follows

15 / 20

The firing order in an I.C. engine depends upon

16 / 20

The calorific value of gaseous fuels is expressed in terms of

17 / 20

 It the temperature of intake air in IC engines is lowered, then its efficiency will

18 / 20

Which of the following is not an intern’s combustion engine?

19 / 20

 For the same power developed in I.C. engines, the cheaper system is

20 / 20

 The working pressure and temperature inside the cylinder of an internal combustion engine is _________ as compared to a steam engine.

Your score is

The average score is 0%

0%

Practice Test 3

0

IC Engine Practice Set 3

IC Engine Practice Set 3

1 / 20

 In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.

2 / 20

If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the

3 / 20

 The pressure at the end of compression, in diesel engines, is approximately

4 / 20

 For the same compression ratio

5 / 20

Scavenging is usually done to increase

6 / 20

The output of a diesel engine can be increased without increasing the engine revolution or size in following way

7 / 20

Theoretically, a four stroke cycle engine should develop _________ power as that of a two stroke cycle engine.

8 / 20

Most high speed compression engines operate on

9 / 20

 For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of

10 / 20

Engine pistons are usually made of aluminium alloy because it

11 / 20

 When crude oil is heated, then which of the following hydrocarbon is given off first?

12 / 20

 In a four stroke cycle diesel engine, the inlet valve

13 / 20

 In a four stroke cycle petrol engine, the inlet valve

14 / 20

The correct sequence of the decreasing order of brake thermal efficiency of the three given basic types of engines is

15 / 20

Diesel engine can work on very lean air fuel ratio of the order of 30: 1. A petrol engine can also work on such a lean ratio provided

16 / 20

 In the crankcase method of scavenging, the air pressure is produced by

17 / 20

 If the intake air temperature of I.C. engine increases, its efficiency will

18 / 20

 In order to eliminate knocking in compression ignition engines, there should be

19 / 20

 Thermal efficiency of a two stroke cycle engine is _________ a four stroke cycle engine.

20 / 20

The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called

Your score is

The average score is 0%

0%

Practice test 4

0

IC Engine Practice Set 4

IC Engine Practice Set 4

1 / 20

The object of providing masked inlet valve in the air passage of compression ignition engines is to

2 / 20

 The brake power is the power available

3 / 20

 Pre-ignition is caused by the spontaneous combustion of the mixture before the end of the compression stroke, and is due to

4 / 20

The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed

5 / 20

 If the compression ratio in I.C. engine increases, then its thermal efficiency will

6 / 20

The scavenging efficiency of a four stroke cycle diesel engine is

7 / 20

The power actually developed by the engine cylinder of an I.C. engine is known as

8 / 20

The knock in diesel engine occurs due to

9 / 20

In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the

10 / 20

In loop scavenging, the top of the piston is

11 / 20

The _________ engines can work on very lean mixture of fuel.

12 / 20

A diesel engine has compression ratio from

13 / 20

The reason for supercharging in any engine is to

14 / 20

The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft

15 / 20

 The cetane number of diesel oil, generally available, is

16 / 20

 The ignition quality of diesel oil is expressed by

17 / 20

 In a diesel engine, the duration between the time of injection and ignition, is known as

18 / 20

 Supercharging is the process of supplying the intake air to the engine cylinder at a density _________ the density of the surrounding atmosphere.

19 / 20

The increase in intake temperature of internal combustion engines will _________ efficiency.

20 / 20

The process of breaking up or a liquid into fine droplets by spraying is called

Your score is

The average score is 0%

0%

Practice Test 5

0

IC Engine Practice Set 5

IC Engine Practice Set 5

1 / 20

The expansion of fuel in a four stroke cycle diesel engine

2 / 20

The ratio of the brake power to the indicated power is called

3 / 20

If the speed of the engine is increased, the indicated power will

4 / 20

A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.

5 / 20

The cam shaft of a four stroke I.C. engine running at 1500 rpm will run at

6 / 20

 Compression loss in I.C engines occurs due to

7 / 20

In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of

8 / 20

 In a four stroke cycle petrol engine, the expansion

9 / 20

The effective inhibitor of pre-ignition is

10 / 20

Which of the following statement is wrong?

11 / 20

 For the same power developed in I.C. engines, the cheaper system is

12 / 20

In a typical medium speed 4-stroke cycle diesel engines

13 / 20

Antiknock for compression ignition engines is

14 / 20

In a typical medium speed 4-stroke cycle diesel engine

15 / 20

 If petrol is used in a diesel engine, then

16 / 20

In a diesel engine, the fuel is ignited by

17 / 20

The thermal efficiency of diesel engines is about

18 / 20

 In a four stroke cycle engine, the sequence of operations is

19 / 20

 The brake power is the power available

20 / 20

 The volumetric efficiency of a well designed engine may be

 

Your score is

The average score is 0%

0%

Leave a Reply

Your email address will not be published. Required fields are marked *