CDC Volume 2 UREs 2AX5X

100 Questions | By Teenaduhon | Updated: Mar 21, 2022 | Attempts: 264

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1.

Atmospheric pressure at sea level is?
- A.
  
  14.7 PSI
- B.
  
  17.4 PSI
- C.
  
  29.92 PSI
- D.
  
  29.29 PSI
2.

A barometer is designed to measure pressure in?
- A.
  
  Pounds per square inch
- B.
  
  Inches of mercury
- C.
  
  Milibars of alcohol
- D.
  
  Ounces of air
3.

The primary force an airfoil has to defeat is
- A.
  
  Lift
- B.
  
  Drag
- C.
  
  Thrust
- D.
  
  Weight
4.

The force that acts upward at a right angle to the direction of the relative wind is
- A.
  
  Lift
- B.
  
  Drag
- C.
  
  Thrust
- D.
  
  Weight
5.

The force that acts parallel to the relative wind is
- A.
  
  Lift
- B.
  
  Drag
- C.
  
  Thrust
- D.
  
  Weight
6.

The stress that resists the force tending to cause one layer of material to slide over an adjacent layer is called
- A.
  
  Bending
- B.
  
  Tension
- C.
  
  Torsion
- D.
  
  Shear
7.

What is the design that uses any combination of longerons, stringers, bulkheads, and frames in the construction of the fuselage called?
- A.
  
  Fuselage
- B.
  
  Longerons
- C.
  
  Monocoque
- D.
  
  Semi-monocoque
8.

The structural members used to give shape to the aircraft and provide a means for attaching the skin to the structure are called
- A.
  
  Longerons
- B.
  
  Bulkheads
- C.
  
  Stringers
- D.
  
  Frames
9.

The most common type of material used for fuselage construction is
- A.
  
  Steel
- B.
  
  Titanium
- C.
  
  Magnesium
- D.
  
  Aluminum alloy
10.

The wing design used on most modern military aircraft is
- A.
  
  Cantilever
- B.
  
  Monocoque
- C.
  
  External braced
- D.
  
  Semi-monocoque
11.

The fixed vertical surface of the empennage is called the
- A.
  
  Stabilator
- B.
  
  Elevator
- C.
  
  Rudder
- D.
  
  Fin
12.

Engine mounts are typically made of corrosion-resistant steel that is able to withstand forces of
- A.
  
  120,000 to 140,000 PSI
- B.
  
  150,000 to 170,000 PSI
- C.
  
  180,000 to 200,000 PSI
- D.
  
  210,000 to 230,000 PSI
13.

The main difference between inspection plates and panels is
- A.
  
  Size
- B.
  
  Material
- C.
  
  Location
- D.
  
  Installation
14.

A network of ultrafine cracks that form on or under the surface of transparent plastics is called
- A.
  
  Crazing
- B.
  
  Casting
- C.
  
  Fretting
- D.
  
  Pitting
15.

What are the reference locations in the vertical direction measured from a reference datum that is usually well below the aircraft called?
- A.
  
  Buttlines
- B.
  
  Waterlines
- C.
  
  Buttock stations
- D.
  
  Fuselage stations
16.

Movement about the vertical axis is called
- A.
  
  Roll
- B.
  
  Yaw
- C.
  
  Crab
- D.
  
  Pitch
17.

Which flight control surface controls the aircraft about the longitudinal axis?
- A.
  
  Rudder
- B.
  
  Aileron
- C.
  
  Elevator
- D.
  
  Wing flaps
18.

Which of these is attached to the trailing edge of a horizontal stabilizer?
- A.
  
  Flap
- B.
  
  Spoiler
- C.
  
  Rudder
- D.
  
  Elevator
19.

When making a right turn, the relative position of the ailerons id the right aileron trailing edge is
- A.
  
  Up, left aileron trailing edge is up
- B.
  
  Up, left aileron trailing edge is down
- C.
  
  Down, left aileron trailing edge is up
- D.
  
  Down, left aileron trailing edge is down
20.

The purpose of wing flaps is to
- A.
  
  Increase lift and drag
- B.
  
  Decrease lift and drag
- C.
  
  Increase lift and decrease drag
- D.
  
  Decrease lift and increase drag
21.

The purpose of aircraft trim system is to
- A.
  
  Reduce the amount of lift
- B.
  
  Prevent the aircraft from stalling
- C.
  
  Correct minor deviations in flight attitude
- D.
  
  Improve augmented lateral control surface movement
22.

Matter is any substance that has mass and
- A.
  
  Can be seen
- B.
  
  Occupies space
- C.
  
  Has constant volume
- D.
  
  Cannot be compressed
23.

Atoms are made of
- A.
  
  Molecules, protons, neutrons
- B.
  
  Protons, molecules, electrons
- C.
  
  Molecules, neutrons, electrons
- D.
  
  Protons, neutrons, electrons
24.

Electrons can be released from their order orbit by all of the following forces except
- A.
  
  Heat
- B.
  
  Cold
- C.
  
  Chemical action
- D.
  
  Changing magnetic field
25.

What is the electrical pressure that causes electrons to flow through the conductor called?
- A.
  
  Chemical swap
- B.
  
  Crossfeed field
- C.
  
  Electromotive force
- D.
  
  Transferring magnetic field