LESSON 4 .................................Audio Circuits and Reproducers
All exercises of this lesson are of equal weight.
The total weight is 100.
All references are to TM 11-665, unless otherwise indicated.
1. c--para 145b(1)
2. c--para 146b(2)
3. b--para 146a(2)
4. d--para 146d
5. b--para 147a
6. b--para 147a
7. c--para 147b
8. b--para 148a
9. d--para 151c(1)
10. c--para 151e(2)
11. b--para 151g(3), (4)
The turns ratio is equal to the square root of the impedance ratio:
The primary winding must have 25 times as many turns as the secondary to match
the primary impedance of 5,000 ohms to the secondary impedance of 8 ohms.
12. a--para 151g(3)
13. d--Attached Memorandum, para 4-1a(2)
14. b--Attached Memorandum, para 4-1b(1)
15. d--Attached Memorandum, para 4-1c
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