Test on Aerospace Engineering: Materials and Maintenance

Question 1: The smallest cable that can be used in primary control systems is 1/8-inch diameter.

A. Ano

B. Ne

Explanation: The study materials state that the smallest cable that can be used in primary control systems is 1/8-inch diameter.

Question 2: The grip length of a bolt should be longer than the total thickness of the materials being bolted together.

A. Ano

B. Ne

Explanation: The grip length should equal the total thickness of the materials being bolted together.

Question 3: How tight should the nut be installed on a clevis bolt used to attach a cable fitting to a control surface horn?

A. It should be tightened securely to prevent any movement of the bolt.

B. It should be tightened to a specific torque value, as specified by the manufacturer.

C. It should be tight enough to prevent the cable fitting from turning, but allow the horn to move freely.

D. It should not be tight enough to prevent the clevis bolt from turning in the cable fitting and the horn.

Explanation: According to the study materials, the nut on a clevis bolt should not be tight enough to prevent the clevis bolt from turning in the cable fitting and the horn.

Question 4: What is the recommended depth of penetration when creating a fillet weld?

A. 100 percent of the thickness of the base metal

B. 25 to 50 percent of the thickness of the base metal

C. Less than 25 percent of the thickness of the base metal

D. 3 to 5 times the thickness of the base metal

Explanation: According to the study materials, when making a fillet weld, the penetration should be 25 to 50 percent of the thickness of the base metal.

Question 5: Only a micrometer caliper is required to measure both the rocker arm shaft and the inside of its bushing for fit.

A. Ano

B. Ne

Explanation: To measure the fit between a rocker arm shaft and its bushing, a micrometer caliper is used for the rocker arm shaft, and a telescopic gauge along with the same micrometer caliper is used for the inside of the bushing.