Test: Fuel Injection, Ignition & Carburation - 3


30 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering | Test: Fuel Injection, Ignition & Carburation - 3


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This mock test of Test: Fuel Injection, Ignition & Carburation - 3 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 30 Multiple Choice Questions for Mechanical Engineering Test: Fuel Injection, Ignition & Carburation - 3 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Fuel Injection, Ignition & Carburation - 3 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Test: Fuel Injection, Ignition & Carburation - 3 exercise for a better result in the exam. You can find other Test: Fuel Injection, Ignition & Carburation - 3 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

In a four cylinder, four stroke, diesel engine operating at 1500 the duration of fuel injection is 20°. Time in milliseconds during which fuel is injected would be

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QUESTION: 2

The spark plug gap is normally maintained at

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QUESTION: 3

The function of a distributor in an automobile is to

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The function of the distributor is to distribute the ignition surges to the individual spark plugs in the correct sequence and at the correct instants in time.

QUESTION: 4

Air injection in l.C. engines refers to injection of

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QUESTION: 5

Solid injection in l.C. engines refers to injection of

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QUESTION: 6

The essential equipment for producing high voltage for sparking in petrol engines with battery is

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Most of the modern SI engines use battery ignition system. In this system, the energy required for producing spark is obtained from a 6 or 12 V battery. The essential components of the system are:
(i) battery
(ii) ignition switch
(iii) ballast resistor
(iv) ignition coil
(v) contact breaker
(vi) capacitor or condenser
(vii) distributor
(viii) spark plug

QUESTION: 7

An ignition coil in the spark engine performs the function of

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QUESTION: 8

Which of the following type of battery is commonly used in automobile applications?

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QUESTION: 9

The ignition coil in a automobile acts as a

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The purpose of the ignition coil is to step up the 6 or 12 volts of the battery to a high voltage, sufficient to induce an electric spark across the electrodes of the spark plug.

QUESTION: 10

A normal type of coil in conventional ignition fitted to a four cylinder engine has three cables connected to.it. The thick, highly insulated cable connects the coil with

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QUESTION: 11

Which of the following is not true pertaining to contact breaker ?

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QUESTION: 12

What material is used for the insulating body of a spark plug ?

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QUESTION: 13

In a cycle, the spark roughly lasts for

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QUESTION: 14

Which of the following is not the function of condenser connected across the contact breaker?

Solution:

Option (a) is the function of contact breaker.

QUESTION: 15

Which of the following is not true in context of dwell period ?

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QUESTION: 16

Which of the following is common in magneto ignition system and coil ignition system ?

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QUESTION: 17

The magneto in an automobile is basically a/an

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Magneto is a special type of electric generator. It is mounted on the engine and replaces all the components of the coil ignition system except the spark plug. A magneto, when rotated by the engine, is capable of producing very high voltage and does not need a battery as a source of external energy.

QUESTION: 18

For a spark plug designated M12 x 2, the last digit 2 stands for

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QUESTION: 19

White deposits on the face of spark plug suggest that

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QUESTION: 20

Consider the following statement:
1. For a petrol engine, the mean effective pressure increases as the compression ratio increases.
2. In a petrol engine, the high voltage for spark is of order of 1000 V.
3. The material for center electrode in a spark plug is carbon.
Q. Which of the statement given above is/are correct?

Solution:
  • High voltage for petrol engine spark is of the order of 10000 to 15000 volt.
  • The electrode are usually mode of high nickel alloy to withstand the severe erosion and corrosion.
QUESTION: 21

A hot plug has

Solution:

Insulator tip length is the most significant design parameter which controls the spark plug heat range or operating temperature, A hot plug generally have a long insulator tip, hence a long heat rejection path.

QUESTION: 22

Battery ignition system

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QUESTION: 23

Choose the wrong statement:

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QUESTION: 24

Ignition timing is adjusted by

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QUESTION: 25

Vacuum advance spark timing mechanism shifts the ignition point under

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In this mechanism, the adjustment control quantity is the static vacuum prevailing in the carburettor, a pressure which depends on the position of throttle value of any given time and which is at a maximum when this valve is about half open. So, this mechanism operates for part load operation.

QUESTION: 26

Consider following factors pertaining to optimum firing order of an engine:
1. Engine vibrations
2. Exhaust gas flow regulation
3. Engine cooling
4. Development of back pressure
Q. Which of these factors must be considered?

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QUESTION: 27

Advantage of air injection system is

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QUESTION: 28

Fuel injection pressure in solid injection system is around

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QUESTION: 29

Main advantage of pintaux nozzle is

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QUESTION: 30

The most accurate gasoline injection system is

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