“500 Questions and Answers Reviewer” ( Aircraft Power Plan

Which condition would be the least likely to be caused by failed or failing engine bearings? A - Excessive oil consumption. B - High oil temperatures. C - Low oil temperatures. - CORRECT ANSWER 4. What is the principal advantage of using propeller reduction gears? A - To enable the propeller RPM to be increased without an accompanying increase in engine RPM. B - To enable the engine RPM to be increased with an accompanying increase in power and allow the propeller to remain at a lower, more efficient RPM. - CORRECT ANSWER C - To enable the engine RPM to be increased with an accompanying increase in propeller RPM. 5. Which of the following is a characteristic of a thrust bearing used in most radial engines? A - Tapered roller. B - Double-row ball. . C - Deep-groove ball. - CORRECT ANSWER 6. Which bearing is least likely to be a roller or ball bearing? A - Rocker arm bearing (overhead valve engine). B - Master rod bearing (radial engine). - CORRECT ANSWER C - Crankshaft main bearing (radial engine). 7. The operating temperature valve clearance of a radial engine as compared to cold valve clearance is A - greater. - CORRECT ANSWER B - less. C - the same.