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The glow plug has the characteristic of a PTC. That means...
1) at increased temperature, the resistance increases
2) at increased temperature, the resistance stays the same
3) at increased temperature, the resistance decreases
4) with greater resistance, it heats up more
Answer:

Diesel pre-chamber engines need glow plugs for cold starting because...
1) the injection pressure is not high enough
2) the chamber surface removes too much heat
3) the injection pressure is too high
4) pre-chamber engines do not need glow plugs
Answer:

A characteristic of the diesel engine is...
1) self-ignition
2) external mixture formation
3) spark ignition
4) low compression
Answer:

The exhaust turbocharger of a diesel engine has the task of...
1) pre-cleaning the exhaust gases
2) increasing the carbon dioxide content of the intake air
3) reducing the nitrogen oxide content of the exhaust gases
4) increasing the cylinder charge using air
Answer: