Determine NA and acceptance angle in air for silica optical fiber given the cladding refractive index (1.5) and core refractive index (1.57).
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- A voltage reflection coefficient is measured as 0.75 , and the correspondingload voltage is 1 V. Determine (a) the incident voltage component at the load , (b) the reflected voltage component at the load , and (c) the current reflection coefficientÎNGİLİZCE TÜRKÇE RUSÇA An impurity like antimony (Sb) has five electrons in its outer shell. When there are Sb impurities in silicon,. Please choose one: ahiptir. a. A n-type material is created b. the crystal will be negatively charged C. none of the above D. both of the above 73:11 30.04.2021how much is the nominal current with which a LED diode with semiconductor material (wavelength)LED diode, with semiconductor material (wavelength) color RED.
- Question: In a single phase half wave circuit with RL load, and a freewheeling diode across the load extinction angle B is less than TE. For a firing angle a, the SCR and freewheeling diode would conduct, respectively, for Option 1: TI-a, TT-B Option 2: B-a, 0º Option 3: T-a, B-TT Option 4: B-a, aConsider an p-type silicon for which the dopant concentration ND = 1018/cm3. Find the electron and hole concentrations at T = 350 K. electron = 1018/cm³ & holes= 2.25 × 102/cm³ electron = 2.25 x 102/cm³ & holes= 2.25 x 104/cm3 electron = 17.22 × 104 /cm³ & holes= 1018/cm³ 3 electron 1018/cm³ & holes= 3 %3D 1018/cm3The reflection coefficient for a device is found to be 0.75. What will be the corresponding return loss of the device?
- Silicon is doped with a boron concentration of 4×1018/cm3. Is boron a donor or acceptor impurity? Find the electron and hole concentrations at 300 K. Is this material n-type or p-type? Find the electron and hole mobilities. What is the resistivity of the material?Figure shows the parabolic E versus k relationship in the conduction band for an electron in two particular semiconductor materials. Determine the effective mass (in unit of the free electron mass) of the two electrons. E (eV)4 0.5 0.05 A -0.08 0.08 k (Å-1)If the are unknown semiconducting material how do you identify its type n . p or intrinsic