Before these People Set Exam Questions, You would think that they would have mastered the Art of Spelling. ? Or at least used spell check. ? Things Like >>>> Zerconia Sensors. ?<<<<

And what about the Spelling in this Answer. ? 3 separate mistakes. ?

>>>> Correct. In theroy, as the engine coolant temperture sensor resistance drops so does its voltage drop, and the leaner the mixture will become. A fully warm engine should show approximatly 0.5 volts at the coolant sensor (under 1000 ohms. <<<<<

And Question 25 say's that a Fuel injected engine can't run without a crank sensor. ? Haven't they heard of a Vectra X18XE or X20XEV. ?

The problem with Teachers setting these types of Questions is that they aren't used to Real Life Problems. ? and vehicles. ? And the more that you know, The more Answers you can pick faults with. ? and Come up with something that Contradicts the Answer. ?

Oh and P.S. Yes I have used Spell check on my part of the post.