Chapter 4 Understand the role of Fiber Optics in communicationsystem MCQs 10 min Score: 0 Attempted: 0/10 Subscribe 1. . Optical fiber is made of ___________ (A) Glass and plastic (B) Silica (C) Plastic (D) None of theseShow All Answers 2. . In optical fiber used as light source ___________ (A) L.E.D (B) Laser (C) Photo diode (D) a and bShow All Answers 3. . The velocity of light is ___________ (A) 3×10⁸ m/sec (B) 3×10⁸ miles/sec (C) 3×10¹⁸ m/sec (D) None of theseShow All Answers 4. . The signal travels in optical fiber in the form of ___________ (A) Voltage (B) Current (C) Light (D) None of theseShow All Answers 5. . Optical receiver converts the light into ___________ (A) Electrical signal (B) Light signal (C) Waves (D) None of theseShow All Answers 6. . Light travels in optical fiber ___________ (A) Straight (B) Zigzag (C) Vertical (D) None of theseShow All Answers 7. . Light reflects in optical fiber from ___________ (A) Cladding (B) Core (C) Rubber (D) All of theseShow All Answers 8. . For long distance transmission the optical transmitter is used ___________ (A) L.E.D (B) LASER (C) Photo diode (D) Photo transistorShow All Answers 9. . To control the temperature of LASER diode by ___________ (A) Feedback (B) Cooling (C) Water (D) None of theseShow All Answers 10. . Ratio of losses signal in optical fiber is ___________ (A) More (B) Less (C) Too much (D) None of theseShow All Answers
