Question 103Motor Plants - Assistant Engineer
70% to passOn the cylinder indicator diagram illustrated, the dotted line indicated as 'L' is describing the_______________. Illustration MO-0033
Apower expansion curve
Bbeginning of compression
Ccylinder pressure without injection
Dfiring pressure at 90 degrees crank angle
AI Explanation
The correct answer is C) cylinder pressure without injection. The dotted line labeled 'L' on the cylinder indicator diagram represents the cylinder pressure without injection. This is the pressure curve in the cylinder during the compression and expansion strokes, excluding the effects of fuel injection. The other answer choices are incorrect because: A) The power expansion curve is the solid line on the diagram, not the dotted line labeled 'L'. B) The beginning of compression is not represented by the dotted line 'L'. D) The firing pressure at 90 degrees crank angle is not what the dotted line 'L' represents.
Related Questions
Q401:The device used to limit engine torque at various engine speeds is called a_____... Q119:During maneuvering operations for a direct reversing large, low-speed, main prop... Q508:Which of the listed items should be secured before performing any maintenance on... Q35:The cubic inch (or liter) displacement of a cylinder is determined by the diamet... Q47:Fuel injection systems are designed to primarily meter fuel, atomize fuel, and__...
Ready to test your knowledge?
Take a Motor Plants - Assistant Engineer Practice ExamOfficial Resources