True or false.

1 The altimeter shows the power of the aircraft above sea level.

2 The rate-of-climb indicator shows the height at which an aircraft is increasing or

decreasing.

3 The airspeed and Mach number indicator displays the height of the aircraft in

relation to the air in which it is flying.

4 In some instances, the height of an aircraft is shown in Mach numbers.

5 The Mach number of any moving body is its display compared to the speed of

sound in the

surrounding medium (local speed).

6 A gyroscope is a device for decreasing or increasing orientation, based on the

principles of conservation of angular momentum.

7 A mechanical gyroscope is essentially a spinning wheel or disk whose axle is not

free to take any orientation.

8 A pilot determines aircraft attitude by referring to the cloud. 9 Attitude indicators do not show show the pilot the relative position of the aircraft

compared to the earth's horizon.

10 Attitude indicators are the same in size and appearance, but they all have the

different components and present the same basic information.

11 Each indicator has a pitch trim adjustment so the pilot can center the horizon as

necessary.

12 Airborne long-range communications sets normally operate in a band of

frequencies from about 3 MHz to 30 MHz.

13 Most long-range communications sets are designed for both voice and Morse

code operation.

14 Short-range airborne communications sets operate in the frequency range from

about 40 MHz to 5 GHz.

15 The lower portion of this band is the very-high-frequency (VHF) band; the

higher portion is the ultra-high-frequency (UHF) band.

16 The VHF/UHF frequency bands have transmission characteristics that differ

from those frequencies in the HF band.

17 VHF/UHF communications sets are called line-of-sight communications sets.

18 Radio waves at these frequencies normally return to earth.

19 Therefore, VHF/UHF transceivers are mainly used for air-to-air and air-to-

ground contact in close range operations.

20 Landings and takeoffs are typical situations using air-to-ground VHF/UHF

transmissions.