Question 176Motor Plants - QMED
70% to passThe illustrated device is operated directly by_______________. Illustration MO-0041
Aa rocker arm and push rod
Bfuel oil pressure
Ccam action
Dexcessively high combustion pressure
AI Explanation
The correct answer is B) fuel oil pressure. The illustrated device is likely a fuel injector, which is operated directly by the fuel oil pressure in the fuel system. The fuel oil pressure is what forces the fuel through the injector nozzle and into the engine cylinder, allowing the engine to function. The other answer choices are incorrect because: A) a rocker arm and push rod are not involved in the direct operation of a fuel injector, C) cam action is not the primary driver of a fuel injector, and D) excessively high combustion pressure would not be the direct operating mechanism for a fuel injector.
Related Questions
Q61:When an air started, four-stroke cycle diesel engine is being cranked over, the ... Q142:Maintaining the lowest possible scavenging air temperature at all times is not ... Q111:The solenoid valves in the fuel oil supply line to an automatically fired auxili... Q118:Before starting a diesel engine, you should always _______________. Q154:The lube oil strainer shown in the illustration is used on the reduction gear of...
Ready to test your knowledge?
Take a Motor Plants - QMED Practice ExamOfficial Resources