Consider a wind turbine comprised of two blades, with a radius of 63 ft., which delivers maximum power when the wind speed is above 16 knots (18.4 mph). The wind turbine is designed to produce 135 hp with an efficiency of 74%. The rotor is designed to operate at a constant speed of 45 rpm in winds over 5 knots (5.8 mph) by controlling system load and adjusting blade angles.
Estimate the blade speed and power coefficient for the maximum power condition.
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Explain the role of forward resistance in PN junction diode . Differentiate the approximate and simplified diode models on the basis of forward resistance.
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Q1Explain with your own words the function of a voltage divider and list 3 applications (include the reference/swith your answer)
Q2Explain with your own words the function of a current divider and list 3 applications (include the reference/s with your answer)
Q3Explain the function of dependent or controlled voltage and current sources and list 3 applications (include the reference/s with your answer)
Q4Explain the meaning of Passive Reference Configuration.
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Describe the starting curves of asynchronous motors, with direct start, star-delta start and soft start. (graph and explain)
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List and describe the steps in the power-on procedure
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You recently shifted in a house, and you found three appliances, A of 900 W, B of 1300 W, and C of 750W, in the kitchen connected to a supply of 240 volts and a circuit breaker of 7.5 A current. Which appliances can be used simultaneously?
a = 1, b = 3 , c= 9
Need answer quick
thanks
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How do you connect a relay switch to a servo motor to turn it on/off? (Schematic)
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(CO 3) If an event is captured at a reading of 0x52BA, what will the counter value be if the next event occurs after 1 ms? The E-clock is 12 MHz.
Group of answer choices
a) 0xD06C
b) 0x72AC
c) 0x819A
d) 0xF020
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3. Use Matlab to find the partial fraction expansion of the functions below.
a) F(s)=16(s+2)/((s+4)(s2+6s+9))
show your Matlab commands and answers in the space below
b) F(s)=(s2+2s+2)/((s+1)2(s+4)2)
show your Matlab commands and answers in the space below
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Explain the concept of modulation. b-) Explain the reasons for the modulation. c-) Classify the modulation and write the usage places. d-) Write down the factors that cause a loss in modulation circuits
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CAN SOMEONE RUN THIS WITH VHDL AND SEND ME THE OUTPUT?
| LIBRARY ieee; | |
| USE ieee.std_logic_1164.ALL; | |
| ENTITY LFSR8 IS | |
| PORT (Clk, Rst: IN std_logic; | |
| output: OUT std_logic_vector (7 DOWNTO 0)); | |
| END LFSR8; | |
| ARCHITECTURE LFSR8_beh OF LFSR8 IS | |
| SIGNAL Currstate, Nextstate: std_logic_vector (7 DOWNTO 0); | |
| SIGNAL feedback: std_logic; | |
| BEGIN | |
| StateReg: PROCESS (Clk,Rst) | |
| BEGIN | |
| IF (Rst = '1') THEN | |
| Currstate <= (0 => '1', OTHERS =>'0'); | |
| ELSIF (Clk = '1' AND Clk'EVENT) THEN | |
| Currstate <= Nextstate; | |
| END IF; | |
| END PROCESS; | |
| feedback <= Currstate(4) XOR Currstate(3) XOR Currstate(2) XOR Currstate(0); | |
| Nextstate <= feedback & Currstate(7 DOWNTO 1); | |
| output <= Currstate; | |
| END LFSR8_beh; |
test bench:
| LIBRARY ieee; | |
| USE ieee.std_logic_1164.ALL; | |
| ENTITY Testbench IS | |
| END Testbench; | |
| ARCHITECTURE TBarch OF Testbench IS | |
| COMPONENT LFSR8 IS | |
| PORT (Clk, Rst: IN std_logic; | |
| output: OUT std_logic_vector (7 DOWNTO 0)); | |
| END COMPONENT; | |
| SIGNAL Clk_s, Rst_s: std_logic; | |
| SIGNAL output_s: std_logic_vector(7 DOWNTO 0); | |
| BEGIN | |
| CompToTest: LFSR8 PORT MAP (Clk_s, Rst_s, output_s); | |
| Clk_proc: PROCESS | |
| BEGIN | |
| Clk_s <= '1'; | |
| WAIT FOR 10 ns; | |
| Clk_s <= '0'; | |
| WAIT FOR 10 ns; | |
| END PROCESS clk_proc; | |
| Vector_proc: PROCESS | |
| BEGIN | |
| Rst_s <= '1'; | |
| WAIT FOR 5 NS; | |
| Rst_s <= '0'; | |
| FOR index IN 0 To 4 LOOP | |
| WAIT UNTIL Clk_s='1' AND Clk_s'EVENT; | |
| END LOOP; | |
| WAIT FOR 5 NS; | |
| ASSERT output_s = X"88" REPORT "Failed output=88"; | |
| WAIT; | |
| END PROCESS Vector_proc; | |
| END TBarch; |
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Problem 5)
A long shunt 600 V, 1200-rpm DC motor has a series field winding
resistance of 0.05 Ω, a shunt field winding resistance of 200 Ω,
and an armature resistance of 0.1 Ω. The machine is connected to
600 V DC source. The rotational loss is 3.2 kW. If the machine
draws a 100 A from the supply, calculate
a. Back EMF
b. Determine the machine’s converted power (or developed power) and
its efficiency.
c. Determine the speed regulation if the machine draws 165 A at
full load.
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