Q. Which of the following spark plug increases the resistance to increase the voltage required to jump across the spark plug gap?

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Q. Due to which of the following there are carbon deposits on the spark plug?

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Q. Which among the following is not a requirement of a spark plug?

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Q. Which of the following does not affect overheating?

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Q. How is the frequency of firing in a two-stroke concerning the value of four-stroke engines?

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Q. Which of the following material is used to fill the space between the plug electrodes in a surface discharge plug?

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Q. What is the correct range of gap size in the millimeter of a spark plug?

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Q. Which of the following is used as a material for the ground electrode of the spark plug?

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Q. Which of the following is used as a material for the body shell of the spark plug?

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Q. What is the function of the sealing between the insulator and the body shell?

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Q. Which of the following is not the main part of a spark plug?

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Q. Which of the following is the hottest part of the spark plug?

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Q. Which of the following is termed as the maximum permissible number of degrees per second, change during acceleration to keep up with the timing requirement?

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Q. Which of the following is used to define ignition advance?

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Q. How many numbers of vacuum openings are provided in the carburetor in a complete vacuum control type?

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Q. Which of the following type of advancement uses the ECU?

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Q. Which of the following condition is taken care of by the centrifugal advance mechanism?

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Q. Which among the following is provided in a vacuum advance type to keep the advance unit at zero if no vacuum is applied as during idling?

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Q. Which of the following part vacuum is referred to as a ported vacuum in a vacuum advance type?

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Q. What is the general crankshaft degree range of advancement in a centrifugal advance system?

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