Test on Reciprocating Aircraft Engine Principles

Question 1: Radial engines commonly use a master and articulating rod assembly.

A. Ano

B. Ne

Explanation: Radial engines are commonly found with a master and articulating rod assembly for their piston rods.

Question 2: Is valve clearance adjusted on most horizontally opposed aircraft engines?

A. Ano

B. Ne

Explanation: Most horizontally opposed engines have hydraulic valve lifters that keep all the clearance out of the valve train, eliminating the need for adjustment.

Question 3: Based on the provided study materials, which of the following are classifications of conventional reciprocating engines according to cylinder arrangement with respect to the crankshaft?

A. In-line

B. V-type

C. Radial

D. Liquid-cooled

Explanation: Conventional reciprocating engines are classified according to cylinder arrangement with respect to the crankshaft as in-line, V-type, radial, and opposed. Liquid-cooled refers to a method of cooling, not cylinder arrangement.

Question 4: Which of the following are types of piston rings found in reciprocating engines?

A. Compression rings

B. Oil control rings

C. Scraper rings

D. Thrust rings

Explanation: According to the study materials, the different types of piston rings are compression rings, oil control rings, and scraper rings.

Question 5: The provided study materials detail the common failure modes of Plain Bearings.

A. Ano

B. Ne

Explanation: The study materials list 'Plain Bearings Thrust Bearings Ball Bearings Bearings 53' but do not provide any information regarding the failure modes of any type of bearing.