EE4PM4_Lab4_2023

Marked out of 1.50 P Flag question 13. i) The data for a wind turbine is given below: Wind speed = 14 meters/sec, Length of blade = 10 meter. Choose the correct statement for this wind turbine. a. The input wind power to the turbine is 258 KW b. The input wind power to the turbine is 51.7KW c. The input wind power to the turbine is 25.8KW d. The input wind power to the turbine is 517KW 13. ii) Refer to the above wind turbine choose the correct statement a. The wind rotor swept area is 40square meters. b. The wind rotor swept area is 62.4 square meters. c. The wind rotor swept area is 314 square meters. d. The wind rotor swept area is 31.4 square meters. O O O O

I need a correct answer not a wrong answer please do it Question: Write the necessity of power supply and briefly describe different types of SMPS and UPS

A computer's power supply converts mains AC to low-voltage regulated DC power for the internal components of a computer. You are building a new computer. You are deciding which type of power supply to install. Which of the following definitions BEST describes a valid type of power supply? Correct Answer: A single-rail power supply provides one rail (PCB trace). This provides the best safety for the computer by providing a single point of shutdown in the event of a short circuit. Correct Answer: A single-rail power supply provides one rail (PCB trace) used to always provide equal wattage to all devices attached to the power supply. Correct Answer: A dual-rail power supply provides separate rails (PCB traces) used to provide equal wattage to the devices attached to each rail. Correct Answer: A dual-rail power supply provides separate rails (PCB traces) used to balance the power load between multiple circuits, which prevents any one circuit from becoming overloaded.

Discussion Questions 1- Draw the important components of a steam power station. 2- What factors are taken into account to select the site of steam power station. 3- State the main parts of a thermal power station, and discuss the function of each part. 4- Draw the important components of a Hydro-Electric power station. 5- What factors are taken into account to select the site of Hydro-Electric power station. 6- Draw the important components of a nuclear power station. 7- What factors are taken into account to select the site of nuclear power station. 8- What do you understand from the load curve and what information are converged by a load curve. 9- Discuss the important points to be taken into consideration while selecting the size and number of units generation. 10- Explain the terms, connected load, load factor, plant use factor, diversity factor.

3) 94 select the proper answer for the following: 1) The main processes that have the responsibility of arc initiation in the switching of the high voltage power system are: a) the field and thermal emissions b) the deionization of the arc path c) the photoionization and magnetic field emission 2) The dead tank term is used with: a) Bulk oil circuit breaker b) Minimum oil circuit breaker c) Air blast circuit breaker 3) The errors in the PTs can be minimized by: a) By providing a suitable turn ratio b) By increasing the winding resistance and reactance 2

Voltage sags due to short circuit and earth faults are the cause for the vast majority of equipment problems. Electronics equipment become more susceptible to voltage sag, hence the companies experience production stoppages. Voltage sag analysis is very complex issue. Based on voltage sag randon factors describe on it.

Give the title proposal about renewable energy atleast 5 title Bachelor electrical engineering

There are 144 fuel cells are joined in a series through interconnects.there will be 4 stacks having 36 cell in each stack.these stacks are then oragnised in series and parallel combination to form a single module to deliver required voltage and output power.this SOFCs module then combined with CHP system to get thermal . From this data answer the following questions. a)Calculate voltage losses of module?.this question is very compulsory. b)Electrical efficiency of module? C)Thermal efficiency when module combine with CHP system? D)Combined electrical and thermal efficiency? The input parameters of single cell are given below: Ocv=1.020 Current density=2250mA/cm2 Power density=850mw/cm2 Cell active area= 121cm2 Net power=15kw System fuel utilization=80% Operating temp=550°c Cell voltage=0.8v Power of single cell=103 watt.

Answer both the sub parts or else do not attempt the question please

I need the answer as soon as possible

describe how you will make use of green technology to sustain the electricity supply in North coast( KZN)

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the amount of current that the circuit breaker can interrupt without damaging itself electrically called: Select one: None of these Short circuit limit of this circuit breaker Nominal current Breaking capacity of this circuit Breaker

Complete the table below using the attached circuit. Note: -When computing in half wave rectifier "J1 is ON".

Identify the power system component represented by the given symbol. BE O potential transformer O Circuit breaker O Lightning arrester O current transformer

Circuit breaker usually operate under   A) after D. C. component has ceased B) transient state of short-circuit current C) sub-transient state of short-circuit current D) steady state of short-circuit current

(5) Primary AC Source Transformer Secondary AC/DC Full-wave Rectifier Capaictor in Non- linear Load Figure 6 Analyse different methods of harmonics mitigation to eliminate the harmonic, which you have identify in above power system circuit. You can use harmonic filters, K or equivalent transformers or oversized neutral method depending upon the harmonic sources.

Sir, I need more details. Thanks

Question A

11 and 12 , i need this answer

3. State the number of significant figures in each of the following: (a) 542, (b) 0.65, (c) 27.25, (d) 0.00005, (e) 40 × 10°, (f) 20,000.

Discuss the arcing phenomenon in a circuit breaker. Please write more answer

(01) DC Si Diode Circuit. (Course: Electronic Devices and Circuit Theory) -Use Equation Operators or write it down on paper/digital paper. -Redraw and Apply. -You can add //comments for a better understanding. -Please answer without abbreviation. -Make it clean and clear typing/writing. Thank you.

:A-choose the correct answer for the following: I-Using a solid in the neutral and the earth in the systems that Operating voltage is: (a)below 2.2kV & above 33kV (b) between(2.2kV to 33&V) 2-In ungrounded system such repeated charging and discharging of line to ground capacitance resulting in repeated arcs is called: (a)fault current (bjarcing ground (cjearthing current 3-Using earthing transformer in the: (a)Star-connection system (b) Delta connection system (c)Star & delta connection system

Equal area criteria is a method used to calculate: Select one: O a. None of the answers b. Critical clearing angle and time for transient faults O c. Critical clearing voltage angle for transient faults d. Transient stability current limit O e. Steady state stability power limits

As an electrical and electronic engineer, your manager has asked you to write a report for the attention of new employees, listing and describing the operation of safety devices that are commonly found offices and other industrial situations. The report should include all of the details in the task below.     Task   For the following application, list two electrical safety devices that can be used, and describe their operation:A Star delta starting induction motors

Answer Question 1 Subject: Renewable Energy Systems Last Digit: 15 For Solar: 1200W, 5A, 5 strings, 4 cells in each string, the cell is (60 V, 1A) And, for Wind: 800W Need calculation, figure and proper explanation. A smart home is connected to micro grid as well as utility grid. The micro grid consists of solar and wind energy. Solar power plant meet 60% of energy demand of smart home while rest is from wind power plant in normal oper- ating condition of both power plant. The smart home rated consumption power is 2000 W (Centrifugal pump, static load each 50%). 1. Design your micro grid power generation system which can meet the power consumption requirement of the smart home. Note: Solar array should contain at least two strings depending your two digit of your ID number. Please submit your IDs for getting the number of strings.

write with technical material, digrams and pictures about Domestic electrical installation system

Write in Briefly about circuit breaker, current transformer and voltage transformer