F. H. Richardson's bluebook of projection (1942)

Page scan 000447 from F. H. Richardson's bluebook of projection

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1942
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000447
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Date Added:
May 02, 2025
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THE A.C. TRANSMISSION LINE Practical Questions (For answer to each question see correspoi ding number in text of Chapter XVII) Impedance Match, page 432 i. Name an important requirement in a circuit carrying a.c. 2. Explain the necessity for impedance match. 3. Why is impedance match of especial importance in sound circuits ? 4. Where and why may impedance mis-match be intentionally introduced into a sound system ? 5. At what frequencies are impedances matched in sound equip ment ? Frequency Filters, page 434 6. How may low and high frequencies in the same wire be separated ? 7. What is a "low-pass filter"? 8. What is a "high-pass" filter? 9. How can the selective effect of a filter be modified ? 10. How are low-pass and high-pass filters used in sound ap paratus ? 11. Describe a "resonant circuit." 12. What arc "band pass" filters? 13. Which type of filter is commonly found in the modern pro jection room? 431