P Pre-test (Aircraft Powerplant)

1. A stripe or mark applied to a wheel rim and extending onto the sidewall of a tube-type tire is a?

A. Slippage mark.

B. Wheel-to-tire balance mark.

C. Wheel weight reference mark.

D. All of the above

A. Slippage mark.

2. If it is necessary to use an electrical connector where it may be exposed to moisture, the mechanic should?

A. Coat the connector with grease.

B. Use a special moisture-proof type.

C. Spray the connector with varnish or zinc-chromate.

D. All of the above

B. Use a special moisture-proof type.

3. High-pressure cylinders used to transport and store acetylene must?

A. Be pressure tested to 3,000 PSI.

B. Be green in color.

C. Contain acetone.

D. All of the above

C. Contain acetone.

4. When selecting hardware for attaching bonding connections to an aircraft structure, which of the following should be considered?

1. Mechanical strength.

2. Allowable power loss.

3. Ease of installation.

4. Permissible voltage drop.

5. Amount of current to be carried.

6. Type of load (continuous or intermittent).

A. 1, 3, 5.

B. 4, 5, 6.

C. 1, 2, 3.

D. None of the above

A. 1, 3, 5.

5. Light refraction smoke detectors are activated when the detector?

A. Measures a reduction in the amount of visible or infrared light in the surrounding area.

B. Senses light reflected from smoke particles passing through a chamber.

C. Uses radiation-induced ionization to detect the presence of smoke.

D. All of the above

B. Senses light reflected from smoke particles passing through a chamber.

6. Where is the buttock line or buttline of an aircraft?

A. A height measurement left or right of, and perpendicular to, the horizontal centerline.

B. A width measurement left of, and perpendicular to, the vertical centerline.

C. A width measurement left or right of, and parallel to, the vertical centerline.

D. None of the above

C. A width measurement left or right of, and parallel to, the vertical centerline.

7. In an antiskid system, wheel skid is detected by?

A. An electrical sensor.

B. A discriminator.

C. A sudden rise in brake pressure.

D. None of the above

A. An electrical sensor.

8. An antiskid system is?

A. A hydraulic system.

B. An electrohydraulic system.

C. An electrical system.

D. All of the above

B. An electrohydraulic system.

9. An electrical-type fuel quantity indicating system consists of an indicator in the cockpit and a?

A. Float-operated transmitter installed in the tank.

B. Float resting on the surface of the tank.

C. Float-operated receiver installed in the tank.

D. All of the above

A. Float-operated transmitter installed in the tank.

10. To detect a minute crack using dye penetrant inspection usually requires?

A. That the developer be applied to a flat surface.

B. A longer-than-normal penetrating time.

C. The surface to be highly polished.

D. All of the above

B. A longer-than-normal penetrating time.

11. The primary difference between aviation breathing oxygen and other types of commercially available compressed oxygen is that:

A. The other types are usually somewhat less than 99.5 percent pure oxygen.

B. Aviation breathing oxygen has had all the water vapor removed.

C. Aviation breathing oxygen has a higher percentage of water vapor to help prevent drying of a person's breathing passages and possible dehydration.

D. All of the above

B. Aviation breathing oxygen has had all the water vapor removed.

12. How does acoustic emission testing detect defects in composite materials?

A. By picking up the "noise" of any deterioration that may be present.

B. By analyzing ultrasonic signals transmitted into the parts being inspected.

C. By creating sonogram pictures of the areas being inspected.

D. None of the above

A. By picking up the "noise" of any deterioration that may be present.

13. Which of the following lists only desirable properties of a good hydraulic fluid?

A. High viscosity, low flash point, chemical stability, high fire point.

B. High flash point, low viscosity, chemical stability, low fire point.

C. Low viscosity, chemical stability, high flash point, high fire point.

D. All of the above

C. Low viscosity, chemical stability, high flash point, high fire point.

14. Pressure is a term used to indicate the force per unit area. Pressure is usually expressed in?

A. Pounds per square inch.

B. Pounds per inch.

C. Pounds per cubic inch.

D. None of the above

A. Pounds per square inch.

15. Fairleads should never deflect the alignment of a cable more than?

A. 12 degrees.

B. 8 degrees.

C. 3 degrees.

D. All of the above

C. 3 degrees.

16. What controls the operation of the cabin pressure regulator?

A. Cabin altitude.

B. Bleed air pressure.

C. Compression air pressure.

D. All of the above

A. Cabin altitude.

17. If a static pressure system check reveals excessive leakage, the leak(s) may be located by:

A. Pressurizing the system and adding leak detection dye.

B. Isolating portions of the line and testing each portion systematically, starting at the instrument connections.

C. Removing and visually inspecting the line segments.

D. None of the above

B. Isolating portions of the line and testing each portion systematically, starting at the instrument connections.

18. When adding a rheostat to a light circuit to control the light intensity, it should be connected in?

A. Parallel with the light.

B. Series with the light.

C. Series-parallel with the light switch.

D. All of the above

B. Series with the light.

19. The primary purpose of stall strips is to?

A. Provide added lift at slow speeds.

B. Stall the inboard portion of the wings first.

C. Provide added lift at high angles of attack.

D. All of the above

B. Stall the inboard portion of the wings first.

20. When installing a chevron-type seal in an aircraft hydraulic cylinder, the open side of the seal should face?

A. Opposite the direction of fluid pressure.

B. Up or forward when the unit is installed in a horizontal position.

C. The direction of fluid pressure.

D. All of the above

C. The direction of fluid pressure.

21. The voltage output of an alternator may be regulated by controlling the?

A. Speed of the alternator.

B. Voltage output of the DC exciter.

C. Resistance in the rotor windings.

D. None of the above

B. Voltage output of the DC exciter.

22. Excessive wear on both of the sides of a control cable pulley groove is evidence of?

A. Pulley misalignment.

B. Cable misalignment.

C. Excessive cable tension.

D. All of the above

A. Pulley misalignment.

23. In aircraft electrical systems, automatic reset circuit breakers?

A. Should not be used as circuit protective devices.

B. Are useful where only temporary overloads are normally encountered.

C. Must be used in all circuits essential to safe operation of the aircraft.

D. All of the above

A. Should not be used as circuit protective devices.

24. A hydraulic motor converts fluid pressure to?

A. Linear motion.

B. Rotary motion.

C. Angular motion.

D. None of the above

B. Rotary motion.

25. A welding torch backfire may be caused by?

A. A loose tip.

B. Using too much acetylene.

C. A tip temperature that is too cool.

D. All of the above

A. A loose tip.

26. When inspecting a control cable turnbuckle for proper installation, determine that?

A. No more than four threads are exposed on either side of the turnbuckle barrel.

B. The terminal end threads are visible through the safety hole in the barrel.

C. The safety wire ends are wrapped a minimum of four turns around the terminal end shanks.

D. None of the above

C. The safety wire ends are wrapped a minimum of four turns around the terminal end shanks.

27. What is the purpose of the selection of derated switches for known continuous load current applications?

A. To calculate the voltage drop across the circuit.

B. To prevent short circuits in the motor field windings.

C. To obtain reasonable switch efficiency and service life.

D. All of the above

C. To obtain reasonable switch efficiency and service life.

28. A contaminated carbon monoxide portable test unit would be returned to service by?

A. Heating the indicating element to 300°F to reactivate the chemical.

B. Installing a new indicating element.

C. Evacuating the indicating element with CO₂.

D. None of the above

B. Installing a new indicating element.

29. Which fiber-to-resin percentage ratio for advanced composite wet lay-ups is generally considered the best for strength?

A. 40:60.

B. 2.118055556.

C. 2.527777778.

D. All of the above

C. 2.527777778

30. When overhauling electrical equipment, all necessary information should be obtained from?

A. The aircraft maintenance manual.

B. Maintenance instructions published by the aircraft and/or equipment manufacturer.

C. The illustrated parts manual for the aircraft.

D. None of the above

B. Maintenance instructions published by the aircraft and/or equipment manufacturer.

31. Main rotor blades that do not cone by the same amount during rotation are said to be out of?

A. Balance.

B. Collective pitch.

C. Track.

D. None of the above

C. Track.

32. A hydraulic pump is a constant-displacement type if it:

A. Produces an unregulated constant pressure.

B. Produces a continuous positive pressure.

C. Delivers a uniform rate of fluid flow.

D. All of the above

C. Delivers a uniform rate of fluid flow.

33. What should be used to inert an integral fuel tank before attempting repairs?

A. CO₂.

B. Water.

C. Steam.

D. None of the above

A. CO₂.

34. When an airworthy aircraft is sold, the Airworthiness Certificate:

A. Becomes invalid until the aircraft is reinspected and approved for return to service.

B. Is voided and a new certificate is issued upon application by the new owner.

C. Is transferred with the aircraft.

D. All of the above

C. Is transferred with the aircraft.

35. A fiber-type, self-locking nut must never be used on an aircraft if the bolt is?

A. Under shear loading.

B. Under tension loading.

C. Subject to rotation.

D. All of the above

C. Subject to rotation.

36. When used in close proximity to magnetic compasses, cotter pins are made of what material?

A. Corrosion-resisting steel.

B. Anodized aluminum alloy.

C. Cadmium-plated low-carbon steel.

D. All of the above

A. Corrosion-resisting steel.

37. Most variable-displacement aircraft hydraulic pumps in use:

A. Must be driven at a nearly constant speed in order to be practical for use.

B. Are not practical for use with a closed-center hydraulic system.

C. Contain a built-in means of system pressure regulation.

D. All of the above

C. Contain a built-in means of system pressure regulation.

38. Who is authorized to repair an aircraft instrument?

1. A certified mechanic with an airframe rating.

2. A certificated repairman with an airframe rating.

3. A certificated repair station approved for that class of instrument.

4. A certificated airframe repair station.

A. 1, 2, 3, and 4.

B. 3 and 4.

C. 3.

D. All of the above

C. 3.

39. The inductor-type inverter output voltage is controlled by the:

A. Number of poles and the speed of the motor.

B. Voltage regulator.

C. DC stator field current.

D. All of the above

C. DC stator field current.

40. What is used as a temperature-sensing element in an electrically heated windshield?

A. Thermocouple.

B. Thermistor.

C. Thermometer.

D. None of the above

B. Thermistor.

41. How are generators rated?

A. Watts at rated voltage.

B. Amperes at rated voltage.

C. The impedance at rated voltage.

D. None of the above

B. Amperes at rated voltage.

42. A fuel pressure warning switch contacts close and the warning light is turned on when?

A. A measured quantity of fuel has passed through it.

B. The fuel flow stops.

C. The fuel pressure drops below specified limits.

D. All of the above

C. The fuel pressure drops below specified limits.

43. Which statement is correct regarding an aircraft that is found to be unairworthy after an annual inspection due to an item requiring a major repair, assuming approved data is used to accomplish the repair?

A. An appropriately rated mechanic may accomplish the repair, and an IA may approve the aircraft for return to service.

B. An appropriately rated mechanic or repair station may repair the defect and approve the aircraft for return to service.

C. Only the person who performed the annual inspection may approve the aircraft for return to service after the major repair.

D. All of the above

A. An appropriately rated mechanic may accomplish the repair, and an IA may approve the aircraft for return to service.

44. The air-cycle cooling system produces cold air by:

A. Extracting heat energy across a compressor.

B. Passing air through cooling coils that contain a refrigerant.

C. Extracting heat energy across an expansion turbine.

D. All of the above

C. Extracting heat energy across an expansion turbine.

45. The red radial lines on the face of an engine oil pressure gauge indicate?

A. Minimum engine safe RPM operating range.

B. Minimum precautionary safe operating range.

C. Minimum and/or maximum safe operating limits.

D. All of the above

C. Minimum and/or maximum safe operating limits.

46. Overinflated aircraft tires may cause damage to the?

A. Brake linings.

B. Wheel hub.

C. Wheel flange.

D. All of the above

C. Wheel flange.

47. If an aircraft's constant-pressure hydraulic system cycles more frequently than usual and no fluid leakage can be detected, the most probable cause is:

A. A too-high relief valve setting.

B. Pump volume output too high.

C. Low accumulator air preload.

D. None of the above

C. Low accumulator air preload.

48. In the American Wire Gauge (AWG) system of numbers used to designate electrical wire sizes, the number assigned to a size is related to its:

A. Combined resistance and current-carrying capacity.

B. Current-carrying capacity.

C. Cross-sectional area.

D. None of the above

C. Cross-sectional area.

49. Which of the following conditions will determine acceptance of wood with mineral streaks?

A. Careful inspection fails to reveal any decay.

B. They produce only a small effect on grain direction.

C. Local irregularities do not exceed limitations specified for spiral and diagonal grain.

D. All of the above

A. Careful inspection fails to reveal any decay.

50. Which of the following is the best means to use when removing wet snow from an aircraft?

A. A brush or a squeegee.

B. Hot air.

C. Warm water.

D. None of the above

A. A brush or a squeegee.