Report_Basic_Electricity

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A piece of silver wire has a resistance of 1 ohm. Determine the resistance of alead wire one-third the length and one-third the diameter if the resistivity of lead wire is 30 times that of silver. NOTE: Please explain where did you get the variables so I can understand them. Thank you

B01.2 QUESTIONS ON THIS CHAPTER C a رها The conductivity of a pure semiconductor is due to: al electrons. 2 □ 3 04 □5 al 02 3 04 5 A pure semiconductor is a good conductor when the temperature is: □ 2 □3 4 5 AP type semiconductor is obtained by adding impurities such as: al LESSON BOI: INTRODUCTION TO SEMICONDUCTORS 2 holes positive ions of the N regions and electrons electrons and holes positive ions of the P regions and holes □ 3 04 5 very high very low ol □ 2 □ 3 4 □5 absolute zero when ranging between 0 and 25 °K it is not affected by temperature An N type semiconductor is obtained by adding impurities such as: those belonging to group III of the periodic table of the elements al phosphorus only those belonging to group V of the periodic table of the elements those belonging to the group III of the periodic table of the elements antimony only gallium only boron in the proportion of 25 %, and arsenic as 75 % boron only aluminum and antimony together at 50% those belonging to group V…

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İNGİLİZCE TÜRKÇE RUSÇA In a doped semiconductor, Please choose one: a. no free electrons b. free electrons are generated thermally C. there are only holes D. answers B. and D. to. there are as many electrons as holes /5000 CLAMO 14:11 30.04.2021

The graph below illustrates the effect of temperature on the conductivity of an extrinsic semiconductor. Which stage most semiconductor devices can be operated? III II by log, o low high temp. IT temp. Select one: O a. No correct answer given O b. Stage 2 because of the constant behaviour O c. Stage 3 because increasing the temperature increase the conductivity of semiconductor. d. Stage 1 because low temperature increases the conductivity of materials. Question 1 For some applications, gold is used as electrical conductor instead of copper because. Select one: a. all the answers are wrong b. Less density and cheaper than copper С. Easily oxidised and react with other material O d. It has higher conductivity than copper e. Good ductility and high strength

Please answer both question or give someone else to answer. Need small explanations. Which of the following are the majority carriers in p-type semiconductors? a. electrons b. photons c. holes d. neutrons Two capacitors C1 = 1.5 μF and C2 = 5 μF are in series. If the charge stored by C1 is 10 C, determine the charge stored by C2. a. 3 C b. 10 C c. 1.5 C d. 4 C

Q3) The self capacitance of each unit in a string of four suspension insulators is C. The shunting capacitance of the connecting metal work of each insulator to earth is 0-2 C. Calculate (i) the voltage across each insulator and (ii) string efficiency.

Current can not flow through an insulator because they have O a. free electrons O b. no free protons O c. no free electrons O d. free neutrons

A two wires, one of Copper and the other of Nickel, if the resistance of the first is (12.7 Q), and the second is (11.6 0) at room temperature, at what temperature are their resistances equal? Note that the temperature coefficient of resistivity of Copper is (0.0039 C-1), and for Nickel it is equal to (0.006 C1).

PROBLEM 2 Two semiconductor materials A and B shown in the given figure, are made by doping germanium crystal with arsenic and indium respectively. The two are joined end connected to a battery as shown in figure. Is the junction forward biased or reverse biased? A B

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Q2/A- what are the main cases of insulator failures? B-what are type testing of insulator?

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Electrical Engineering subject

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Q1\ Explain in detail the effect of applying a voltage source on a pure semiconductor and dopped semiconductor. Explain with the help of drawing how these types are employed to conduct the charges. 02)

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A sample of wire (1 mm in diameter by 1 m in diameter) length) of an aluminum alloy (containing 1.2% Mn) is placed in an electrical circuit, as shown in the figure next to. A voltage drop of 432 mV is measured at wire length when it carries a 10 A current. Calculate the conductivity of this alloy.

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A fuse wire of circular cross-section has a radius of 0.8 mm. The wire blows off at a current of 8A. Calculate the radius of the wire that will blow off at a current of 1 A. Also calculate the Value of blow off current when radius is 0.5 mm