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1. Using the power-sizing model and given: Battery A: rated at 15 Watt Hours for $100.00. Power s...
6) A trade magazine publishes lists of power-sizing exponents that reflect economies of scale for developing...
6) A trade magazine publishes lists of power-sizing exponents that reflect economies of scale for developing engineering estimates of various types of equipment. There are two pieces of similar machinery, the StottViking 100 and the StottViking 50. The 100 model produces twice the ouput (volume) as the 50 model. The cost of the 50 model was $95,000 five years ago, and the cost of the 100 model is $250,000 today. . There is a cost index documenting price changes of...
1. A full wave rectifier, used as a battery charger, is shown in the figure below....
1. A full wave rectifier, used as a battery charger, is shown in the figure below. D4 Assume battery voltage, E 12 V, battery capacity 50 watt-hours, average charging current, Io-4 A, primary input voltage is 120 V rms, 60 Hz, and the transformers (primary-secondary) turns ratio 4:1. Calculate (a) the conduction angle of the diode, (b) the value of the current limiting resistance R, (c) the power rating of R, (d) the charging time in hours.
1. Assume we are using the simple model for floating-point representation as given in this book...
1. Assume we are using the simple model for floating-point representation as given in this book (the representation uses a 14-bit format, 5 bits for the exponent with a bias of 15, a normalized mantissa of 8 bits, and a single sign bit for the number): a) Show how the computer would represent the numbers 100.0 and 0.25 using this floating-point format. b) Show how the computer would add the two floating-point numbers in part a by changing one of...
Question 4 (15 Marks) A. Using the power law, calculate the wind speed at 30 m...
Question 4 (15 Marks) A. Using the power law, calculate the wind speed at 30 m if the wind speed at 50 m is 8.5 m/s. Assume the surface roughness exponent of the site is a 0.1. (3 Marks) B. What is the performance behaviour of Lithium -ion battery interms of discharge current and depth of discharge? (3 Marks) C. Explain the origin and features of Earth's tidal resources? (3 Marks) D. The data for a proposed short rotation coppice...
2. A wind turbine has the maximum power output at the rated speed of 12 m/s...
2. A wind turbine has the maximum power output at the rated speed of 12 m/s and a rotor diameter of 82 meters. The cut-in and cut-out speeds for this type of wind turbine are 4 m/s and 23 m/s, respectively. The table below shows the annual wind data near a potential site for setting up a wind farm using this type of wind turbine and the power coefficient of the wind turbine at the specific wind speed. The air...
1. (40 Points) Given the parameters listed model below and using a +/- 5V power supply,...
1. (40 Points) Given the parameters listed model below and using a +/- 5V power supply, bias a common source amplifier with a 40/40/20 power supply split, an overall voltage gain of approximately 8 V/V, and drain current of 2mA. Assume Ri - 100k & Rsig - 50 ohms. Ensure you draw a complete schematic. " =100mA/V2 and V-2 V Roi- Ros- Ro- Source Resistor(s) -
please answer 13.16 at rated load of unity power factor and rated terminal voltage, determine efficienc...
please answer 13.16
at rated load of unity power factor and rated terminal voltage, determine efficienc including field rheostat loss. Ans. 93.139 13.11 A generator under test is rated at 100 KVA, 3-phase, 60-Hz; 2,400 volts. (a) If driven b a de motor unexcited, the motor output is 1.26 KW. (b) If driven by a de motor, generato on open circuit and excited to generate rated potential, the motor output is 2.5 KW. ( Ifdriven by a de motor, generator...
(UPS Battery) On January 1, 2015, you bought a backup battery for your office uninterruptible power supply (UPS) sy...
(UPS Battery) On January 1, 2015, you bought a backup battery for your office uninterruptible power supply (UPS) system. In each of the next three years, the battery can fail and a new battery needs to be bought (if you want to keep using the UPS system). The maximum lifespan of the battery is four years; i.e., the battery must be replaced after four years. Due to chemical properties, the probability of the battery failure is fixed at 20% in...
4.5. After fitting the regression model, on 15 cases, it is found that the mean square error s 3 ...
4.5. After fitting the regression model, on 15 cases, it is found that the mean square error s 3 and 0.5 0.3 0.2 0.6 0.3 6.0 0.5 0.4 0.2 0.5 0.2 0.7 0.6 0.4 0.7 3.0 Find a. The estimate of V(81). b. The estimate of Cov(Bi, B3). C. The estimate of Corr(B1, β3) d. The estimate of V (B1 -B3).
4.5. After fitting the regression model, on 15 cases, it is found that the mean square error s 3...
Renewable Energy Systems a- Total appliance W-hour per day b-Total panel W-hours per day. Take t...
Renewable Energy Systems
a- Total appliance W-hour per day
b-Total panel W-hours per day. Take the losses correction factor
to be 1.2.
c-Total Watt peak of PV panel capacity needed
Wp (Power in 1 hour)
d-The total no of panels
e-Total battery capacity
f-Number of batteries
g-PWM Charge controller capacity. Take the tolerance factor to
be 1.25.
h-MPP Charge controller capacity. Take the tolerance factor to
be 1.25.
i-Inverter power. Take the tolerance factor to be 1.25.
A house uses...
6) A trade magazine publishes lists of power-sizing exponents that reflect economies of scale for developing engineering estimates of various types of equipment. There are two pieces of similar machinery, the StottViking 100 and the StottViking 50. The 100 model produces twice the ouput (volume) as the 50 model. The cost of the 50 model was $95,000 five years ago, and the cost of the 100 model is $250,000 today. . There is a cost index documenting price changes of...
1. A full wave rectifier, used as a battery charger, is shown in the figure below. D4 Assume battery voltage, E 12 V, battery capacity 50 watt-hours, average charging current, Io-4 A, primary input voltage is 120 V rms, 60 Hz, and the transformers (primary-secondary) turns ratio 4:1. Calculate (a) the conduction angle of the diode, (b) the value of the current limiting resistance R, (c) the power rating of R, (d) the charging time in hours.
1. Assume we are using the simple model for floating-point representation as given in this book (the representation uses a 14-bit format, 5 bits for the exponent with a bias of 15, a normalized mantissa of 8 bits, and a single sign bit for the number): a) Show how the computer would represent the numbers 100.0 and 0.25 using this floating-point format. b) Show how the computer would add the two floating-point numbers in part a by changing one of...
Question 4 (15 Marks) A. Using the power law, calculate the wind speed at 30 m if the wind speed at 50 m is 8.5 m/s. Assume the surface roughness exponent of the site is a 0.1. (3 Marks) B. What is the performance behaviour of Lithium -ion battery interms of discharge current and depth of discharge? (3 Marks) C. Explain the origin and features of Earth's tidal resources? (3 Marks) D. The data for a proposed short rotation coppice...
2. A wind turbine has the maximum power output at the rated speed of 12 m/s and a rotor diameter of 82 meters. The cut-in and cut-out speeds for this type of wind turbine are 4 m/s and 23 m/s, respectively. The table below shows the annual wind data near a potential site for setting up a wind farm using this type of wind turbine and the power coefficient of the wind turbine at the specific wind speed. The air...
1. (40 Points) Given the parameters listed model below and using a +/- 5V power supply, bias a common source amplifier with a 40/40/20 power supply split, an overall voltage gain of approximately 8 V/V, and drain current of 2mA. Assume Ri - 100k & Rsig - 50 ohms. Ensure you draw a complete schematic. " =100mA/V2 and V-2 V Roi- Ros- Ro- Source Resistor(s) -
please answer 13.16
at rated load of unity power factor and rated terminal voltage, determine efficienc including field rheostat loss. Ans. 93.139 13.11 A generator under test is rated at 100 KVA, 3-phase, 60-Hz; 2,400 volts. (a) If driven b a de motor unexcited, the motor output is 1.26 KW. (b) If driven by a de motor, generato on open circuit and excited to generate rated potential, the motor output is 2.5 KW. ( Ifdriven by a de motor, generator...
(UPS Battery) On January 1, 2015, you bought a backup battery for your office uninterruptible power supply (UPS) system. In each of the next three years, the battery can fail and a new battery needs to be bought (if you want to keep using the UPS system). The maximum lifespan of the battery is four years; i.e., the battery must be replaced after four years. Due to chemical properties, the probability of the battery failure is fixed at 20% in...
4.5. After fitting the regression model, on 15 cases, it is found that the mean square error s 3 and 0.5 0.3 0.2 0.6 0.3 6.0 0.5 0.4 0.2 0.5 0.2 0.7 0.6 0.4 0.7 3.0 Find a. The estimate of V(81). b. The estimate of Cov(Bi, B3). C. The estimate of Corr(B1, β3) d. The estimate of V (B1 -B3).
4.5. After fitting the regression model, on 15 cases, it is found that the mean square error s 3...
Renewable Energy Systems
a- Total appliance W-hour per day
b-Total panel W-hours per day. Take the losses correction factor
to be 1.2.
c-Total Watt peak of PV panel capacity needed
Wp (Power in 1 hour)
d-The total no of panels
e-Total battery capacity
f-Number of batteries
g-PWM Charge controller capacity. Take the tolerance factor to
be 1.25.
h-MPP Charge controller capacity. Take the tolerance factor to
be 1.25.
i-Inverter power. Take the tolerance factor to be 1.25.
A house uses...
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