3. Consider a commercial InGaAs pin photodiode whose responsivity is shown in the Figure. Its dark current is 3.5nA. Answer the following. a) Calculate the incident optical power required to produce a photo generated current of thrice of the dark current when a wavelength of 1700nm is incident on the photodiode. And then calculate the QE of the photodetector at 1700nm?

Please send the answer by typing only. I don't want handwritten.

Which of the following distribution systems would you select for a medical research campus? A) Primary selective system. C) Secondary loop system. B) Distributed radial system. D) Primary and secondary loop system. Authoritative rules for electrical design and installation are contained in which of the following 7) documents? A) ASHRAE Handbook of Fundamentals. B) NFPA 101. C) NEC. The illumination from a point source 4 ft. above a surface is 100 foot-candles, and the surface is normal to the source. What will be the illumination level if the surface is tilted 45°? A) 50 foot-candles. B) 100 foot-candles. C) 71 foot-candles. Which of the following lamp types is generally the most energy efficient? A) Incandescent. C) High intensity discharge. B) LED. D) Fluorescent.

19. Which of the following is exempted from the National Electrical Code's strict grounding requirementsfor equipment?A. Frames of electrically heated appliances that are temporarily insulated from groundB. Equipment that's located in a wet or damp location and isolatedC. Distribution apparatuses mounted on wood poles that are less than eight feet tallD. Insulation that's used as a substitute for grounding and offers equal and effective safety by using double-insulated equipment