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Chapter 27 Solutions
Delmar's Standard Textbook Of Electricity
- 3-3) Similar to Lathi & Ding prob. 3.3-7. The signals in the figure below are modulated signals with carrier cos(5t). Find the Fourier transforms of these signals using the appropriate properties of the Fourier transform and text Table 3.1. The sketch the magnitude and phase spectra for figure parts (a) and (b). Hint: these functions can be expressed in the form g(t) cos(2лfot) (a) 1 1 2π www. σπ (b) (c) όπarrow_forward3-1) Similar to Lathi & Ding prob. 3.1-1. Use direct integration to find the Fourier transforms of the signals shown below. a) g₁(t) = II(t − 2) + 2 exp (−3|t|) b) g(t) = d(t+2)+3e¯u (t − 2)arrow_forward3-2) Lathi & Ding prob. 3.1-5. From the definition in eq. 3.1b, find the inverse Fourier transforms of the spectra in the figure below. G(f) COS лf 10 (a) G(f) 1 -B B (b)arrow_forward
- Construct a battery pack to deliver 360V and 450-mile range for a vehicle that consumes 200 Wh/mile, from prismatic cells with 25Ah and 3.6 V. Physical dimensions of the cell are 0.5 cm thickness, 20 cm width and 40 cm length. a) Report configuration of the battery pack. 10-points b) Resistance of each cell is 0.05 Ohm, calculate the total internal resistance of the battery pack. 10-points c) Calculate the voltage drop during discharge when the battery is discharged at 100A. 10-points d) Calculate the amount of anode and cathode to build a prismatic cell with 25Ah capacity. Assume the cell chemistry as: Si anode and [Li(Ni1/3Co1/3Mn1/3)O2] cathode. Atomic weight of elements: Li=7, Si = 28, Ni=58, Co=59, Mn=55, O=16, 10-points e) Calculate the theoretical specific energy (Wh/kg) and practical energy density (Wh/liter) of the battery pack. 10-points f) Calculate the thickness on anode and cathode coating assuming each electrode has 30%…arrow_forwardI need help with this problem and an explanation of the solution for the image described below. (Introduction to Signals and Systems)arrow_forwardDesign a battery pack for an electric bike that consumes in average 10Wh/mile and drive 30 miles per charge. The battery state of charge window is 80%. Design the battery by using new commercial cylindrical cells with 20mm diameter and 80mm height. The battery is constructed based on graphite anode C6 and cathode Li(Ni0.8Co0.15Al0,05)O2 that provides 3.75V at the cell level and 10Ah capacity. Density of anode is 2.2 g/cm3 and density of cathode is 4.5 g/cm3. Report on the battery pack configuration if the required battery pack voltage is 75 volts. If the thickness of anode and cathode is limited to 130 microns (130 x 10-4 cm) calculate the total electrode surface area in each cell. Assume the porosity of electrodes are 30%. Calculate the weight of active materials (anode and cathode) in grams and the total current collector’s and electrolyte membrane areas in (cm2).arrow_forward
Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning