Chapter 7.3 - Exam Review

Question 1

True or False. Direction measured on a chart are magnetic directions?

Answer 1

False. Measured in using True North.

Question 2

What’s the Magnetic Direction for 100T with 10E?

Answer 2

090M.

Question 3

What’s the True Direction for 283M with 5W?

Answer 3

278T.

Question 4

What is the Variation from 300T and 307M?

Answer 4

7W.

Question 5

What is the Variation from 105T and 093M?

Answer 5

12E.

Question 6

What’s the True Direction for 068M with 2W?

Answer 6

066T.

Question 7

What’s the True Direction for 000M with 3E?

Answer 7

003T.

Question 8

What’s the Magnetic Direction for 328T with 5W?

Answer 8

333M.

Question 9

What’s the Magnetic Direction for 156T with 12W?

Answer 9

168M.

Question 10

What is the Variation from 218T and 218M?

Answer 10

0.

Question 11

What’s the True Direction for 357M with 1E?

Answer 11

358T.

Question 12

Write 7° as true direction or heading?

Answer 12

007T.

Question 13

Write 316° as a magnetic direction or heading?

Answer 13

316M.

Question 14

Why is magnetic direction needed for Air Navigation?

Answer 14

Because there is not instrument that senses true direction.

Question 15

What is an isogonal and what is it used for (2)?

Answer 15

• Lines on a chart joining places where the value of variation is equal.
• Isogonals are used to find the value of variation.

Question 16

Give one major reason why current charts should be used for Navigation?

Answer 16

Current charts will show current aeronautical, cultural and topographical details, as well as, value of variation.

Question 17

What is deviation?

Answer 17

Angular difference between magnetic north and the Aircraft’s compass.

Question 18

Is deviation constant at a particular place and why?

Answer 18

No. It varies from heading to heading and Aircraft to Aircraft.

Question 19

What reference is used for relative directions (R)?

Answer 19

Longitudinal axis of the Aircraft.

Question 20

Define a great circle?

Answer 20

A circle drawn on the earth’s surface whose centre is the centre of the earth.

Question 21

What is a Rhumb line?

Answer 21

A curved line on the earth’s surface which has a constant angular relationship with North.

Question 22

What references are used for measuring latitude and longitude (2)?

Answer 22

• Equator for Latitude.

- Greenwich/Prime Meridian for Longitude.

Question 23

Write the position of a point ‘A’ which is 100 degrees and 30 minutes East of Greenwich and 45 degrees and 3 minutes South of the Equator?

Answer 23

45°03’S 100°30’E.

Question 24

Convert 15 minutes of latitude into nautical miles?

Answer 24

15NM.