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Question 3 Draw a schematic of the main subsystems of the national electricity supply system explaining the function of each and indicating the power flows between the different subsystems. (6 mar...
Draw a schematic of the main subsystems of the national electricity supply system explaining the function of each and indicating the power flows between the different subsystems.
C. Calculation problems (12 marks each) 6. Generating electricity from a nuclear power plant A thermal heat at a rate of 1.2 GW and at a temperature of 450 C. This heat is used in an engine that is connected to the sea water at T 20°C as low temperature reservoir. The engine has an efficiency of 51%. nuclear power plant generates (A) What is the electrical power output of this power plant? (The electrical enerzy output is equal to...
Per unit calculation
QUESTION 5 a) Define the Per Unit system and list three (3) main reasons of using Per Unit systemm. (5 marks) b) A three-bus power with two generator system is shown in figure Q2 (b). The 3-phase power and line-line voltage ratings are given below Ti T2 J40 2 Gi G2 j25 Ω 25 Ω Ty Figure Q2 (b) GI: 750 MVA, 18 kV, X 7% G2: 750 MVA, 18 kV, X-15% Motor: 1500 MVA, 20 kV,...
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Question#1140Marksl The shaft shown in the figure is rotating at 650 rpm and it receives 5592.75 W through a flexible coupling at its right end. The power is delivered to an adjacent shaft through a single helical gear B having a normal pressure angle of 20° and a helix angle of 15o. The pitch diameter for the gear is 105.1814 mm (4.141 in). A spacer is used to position the gear relative to bearing C. The...
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Question 1 Not yet answered Marked out of 4.00 Flag question If the number density of electrons in a wire is n 1.00 x 1028 m-3, at what drift velocity must they travel through a wire of diameter d 0.560 mm to deliver a current of 7.20 A? Give your answer in mm s1 to 3 significant figures...
Question 1 In the diagram of Superheterodne AM receiver shown below explain the function of each block. (a) 15 marks Antenna Speaker Audio and power amplifiers RF IF Mixer Detector Mi amplifier amplifier AGC --_Local Gang tuned oscillator (b) For a 4-bit DAC, calculate the output voltage for an input code word 1010 if a [10 marks] logic 1 is 10V and a logic 0 is 0V, and R = RFI kΩ Total: 25 marks] Question 2 (a) Explain the...
This is about database system. Thank you.
Question A1 You are given with three Oracle tables, namely, Program, Channel and Booking, as shown in Tables 1 to 3. PROGRAM_ID PROGRAM_NAME DURATION 2012022 Dragon Dance 2014063 Haunted House 2016005 CID 2017172 Kung Fu Master 2018322 Family Affair 2019006 Hong Kong Sites 2019113 2019 Singing Contest 25 58 45 28 68 120 75 Table 1: Program CHANNEL_NO CHANNEL_NAME TVR-1 Rediffusion Channel 1 TV-P Television Pearl Channel TV-G Television Gold Channel Table 2:...
pleas help me in this do any question you know using National
Electrical Code 2011
Applied Electricity NEC worksheet t hree Copper conductors with THHN insulation run in Electrical A branch-circuit Consther conductors. The conductor terminations are rated for a maximum ure in the area of this installation is not expected to exceed 30C size 8 AWG, the maximum ampacity of the conductors If the conductors for this circuit are permitted A 40 amperes. B. 50 amperes. to be used...
Identify the scientific premise, main hypothesis addressed by
the paper and the research question of the paper
Also, what is the main results and the implication of
results
IMPORTANCE Clinical outcomes for glioblastoma remain poor. Treatment with immune checkpoint blockade has shown benefits in many cancer types. To our knowledge, data from a randomized phase 3 clinical trial evaluating a programmed death-1 (PD-1) inhibitor therapy for glioblastoma have not been reported. OBJECTIVE To determine whether single-agent PD-1 blockade with nivolumab...
Name: Integumentary System Case Study: Jon's Story (Each question is worth 0.5 pts) At 63 years old, Jon was retiring early by most people's standards, but he felt it was time and he was looking forward to it. His mind wandered as he raked the dry remnants of his front yard. The African summer had been hotter than usual but he had always worked outdoors and the warmth of the sun on his face felt good. Jon had grown up...