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IC Engine Practice Test: Ignition System
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Ignition topics include: Requirements and battery of ignition systems, magneto ignition systems, ignition timing and energy parameters and spark mechanism. The ignition system is a key component of a vehicle that helps start the engine. It creates a spark that ignites the fuel in the engine, which starts the combustion process.  Here are some basics of the ignition system: Ignition coil: Changes the low battery voltage into the power needed to reach the spark plug, reach the fuel, and start the engine Distributor ignition: Takes high voltage and divides it up, sending out impulses to your... Show more
IC Engine Practice Test: Ignition System
Time left 00:00
25 Questions

1. In SI engine, to obtain required firing order ___________
2. The ignition system can be turned ON or OFF, with the help of an ignition switch.
3. An eight cylinder engine running at 3000 rpm requires __________ spark per minute.
4. The engine speed and the engine load are the control quantities required for the automatic adjustment of the ignition timing.
5. What are the essential components of a battery ignition system?
6. The purpose of the spark advance mechanism is to assure that under every condition of engine operation, ignition takes place at the most favourable instant in time.
7. The vacuum advance mechanism controls the ignition timing for full load operation.
8. The lead acid battery is used in ______________ duty commercial vehicles.
9. A spark is produced to ignite a homogeneous air fuel mixture in the combustion chamber of an engine, it is called spark ignition system.
10. The larger throttle opening means the possibility of better mixing and combustion during idling.
11. In two wheelers magneto ignition system is favoured due to ____________ weight and less maintenance.
12. The ignition timing is affected by _____________
13. The ignition timing is fixed to obtain minimum power from the engine.
14. In transistorized coil ignition system, the ignition of lean mixtures is improved.
15. A blast resistor is provided in parallel with the primary winding to regulate the primary current.
16. Transistorized coil ignition system, decreases reliability.
17. In magneto ignition system, as the engine speed increases the flow of current ____________
18. In battery ignition system, the energy required for producing spark is obtained from a _____________ battery.
19. A spark can be caused by applying a sufficiently low voltage between two electrodes separated by a gap.
20. An ignition system should function efficiently over the entire range of engine speed.
21. It is necessary to have centrifugal advance of the spark timing since the lean mixtures require an earlier spark timing than the rich mixtures.
22. If the resistance of the deposits on the spark plug electrodes is sufficiently high, the loss of electrical energy through these deposits may prevent the spark discharge.
23. The battery is charged by a __________ driven by the engine.
24. Part load operation of a spark ignition engine is not affected by throttling the incoming charge.
25. When the ignition switch is opened, the primary winding of the coil is connected to the positive terminal post of the storage battery.

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