M7 Part 2

1. Which of the following types of fit has the biggest positive allowance?

Clearance fit

Interference fit

Transition fit

2. Grease and oil must be kept away from:

Nitrogen cylinder

Oxygen cylinder

Carbon dioxide cylinder

3. Countersunk is best carried out by using

An oversize drill

A stop countersunk tool

A rose bit

4. The flare angle of an aircraft rigid fluid line is:

37 degree

45 degree

60 degree

5. When wires in a wiring loom bundle are spliced, the splices should be:

All grounded together at one point

Grouped together in pares along the bundles

Staggered along the bundle

6. An aircraft part having a specified dimension of 1.5 inches and a tolerance of +0.004 inches could be manufactured to a size that is in the range.

1.496 inches to 1.504 inches

1.5 inches to 1.504 inches

1.496 inches to 1.5 inches

7. Greasing of bearing should be continued until:

Fresh grease comes out from the other end

Old grease comes out of the other end

The pressure gauge shows full reading

8. Sealing in a flare-less fitting is obtained by a:

Thermal and taper

Compression sleeve

Bead

9. After a metal working job is completed and a hand file is ready for storage, it should be:

Lightly oiled and wrapped in a apaer or plastic and put in a drawer

Cleaned and hung on a rack

Coated with a waxed-based inhibiting fluid and stored vertically in a thin containing other files.

10. Aviators’ breathing oxygen cylinders installed on aircraft are color code:

Green

Black

Blue

11. For installation of rigid hydraulic lines the tube should be:

Pulled to the fitting using the nut, to ensure a lock proof connection

Installed with at least one bend to allow for expansion and contraction

Installed such that it always runs above electrical wire bundles

12. Select the correct statement with regards to torque loading:

Threads of bolts and nuts must be lubricated

Total torque=friction drag torque + desired torque

To align the castle nut at 10% increase in torque is acceptable

13. Which of the following hydraulic fluid is colored red?

ML-H-7644

MIL- H-5606

Skydrol LD

14. The significance of 60 in the 60/40 solder is the % of:

Tin content

Lead content

Zinc content

15. Which one of the following fit has the largest interference?

Running fit

Drive fit

Push fit

16. When trouble shooting an electrical circuit you would likely to use:

An ohmmeter in parallel, while the circuit is still powered

An ammeter in parallel, while the circuit is still powered

A voltmeter in parallel, while the circuit is still powered

17. During riveting which one of the following factors is most likely to cause buckling of the sheets?

The rivet hole is too large

The rivet hole is too small

Insufficient driving of the rivet

18. Dulling of a metal surface that has been exposed to battery fumes, exhaust gases or
salt spray would indicate:

Uniform surface corrosion

Filiform corrosion

Galvanic corrosion

19. When drying an aircraft wheel bearing with compressed air after cleaning, it is
important that:

The bearing is spun in one direction only

The bearing is not spun

The bearing is spun in both directions for an equal time

20. Teflon hose has permanent set after removal.

Straighten hose before reinstall

Hose cannot be re-used

Do not attempt to re-straighten hose