If the pressure altitude is 7,000 feet and the temperature is +15C the density altitude is:
15.
A.
9,800.
B.
7,200.
C.
8,600.
D.
6,500.
16.
A wing that has no external supports is called a:
A.
Cantilever wing.
B.
Symmetrical wing.
C.
Wing chord.
D.
Laminate wing.
17.
Lift, weight, thrust, and drag are the four forces that act on an aircraft. You are correct in making
which of the following statements.
A.
Induced and parasite are two types of drag forces.
B.
On a conventional aircraft, the propeller or jet engine is used to overcome gravity.
C.
The four forces must be unequal to maintain straight and level flight.
D.
Only the weight of the aircraft and its fuel must be against gravity.
18.
When the helicopter is moving forward at a speed of 150 knots, and the velocity of the rotor
blade tip is 363 knots, the advancing and retreating blade speeds are:
A.
513 and 213 knots.
B.
513 and 313 knots.
C.
531 and 213 knots.
D.
531 and 231 knots.
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