Step 3 » GENERAL learning environment Category C (C, C1)

GENERAL Learning Environment Category C (C, C1)
Question 61 of 533

What is meant by the “thermal value” of the spark plug?

A the time in seconds, until the spark plug reaches the self-cleaning temperature of the electrodes;
B the capacity of the spark plug to work better at high temperatures;
C the property of the spark plug to connect and disconnect the operation of the thermostat.
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Explanation

Explanation text category C / driving tests drpciv:
The most important characteristics of spark plugs are the thermal value and the thread size. The thermal value is the time in seconds, until the spark plug reaches the self-cleaning temperature of the electrodes, and when we change the spark plugs we must take spark plugs with the same thread size.
Correct answer: A
 
Driving tests drpciv category C explained.

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