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What did Russian engineer Yablochkov invent in 1876?
What did Russian engineer Yablochkov invent in 1876?
Lighting system based on a set of induction coils
In what transformer form are windings wrapped around the center leg of a laminated core?
In what transformer form are windings wrapped around the center leg of a laminated core?
Core form
What type of transformer is used to step the voltage up to the transmission level?
What type of transformer is used to step the voltage up to the transmission level?
Unit transformer
What is the purpose of wrapping windings on top of each other in transformers?
What is the purpose of wrapping windings on top of each other in transformers?
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At what voltage levels are power transformers used in power distribution systems referred to as substation transformers?
At what voltage levels are power transformers used in power distribution systems referred to as substation transformers?
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What is the term for a transformer used at a substation to step the voltage down to the distribution level?
What is the term for a transformer used at a substation to step the voltage down to the distribution level?
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Who developed the first electrical power distribution system in the 1880s?
Who developed the first electrical power distribution system in the 1880s?
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Why was high current needed in the early electrical power distribution system?
Why was high current needed in the early electrical power distribution system?
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What was the major issue with the first electrical power distribution system designed by Edison?
What was the major issue with the first electrical power distribution system designed by Edison?
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Who proposed the second generation of power distribution systems?
Who proposed the second generation of power distribution systems?
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Why did Tesla suggest stepping up the voltage for power transmission?
Why did Tesla suggest stepping up the voltage for power transmission?
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How did Tesla's approach of increasing voltage for transmission reduce losses?
How did Tesla's approach of increasing voltage for transmission reduce losses?
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What is a transformer?
What is a transformer?
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Who is credited with the invention of the transformer?
Who is credited with the invention of the transformer?
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What is the purpose of the primary winding in a transformer?
What is the purpose of the primary winding in a transformer?
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What is the purpose of the secondary winding in a transformer?
What is the purpose of the secondary winding in a transformer?
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How are the coils in a transformer usually connected?
How are the coils in a transformer usually connected?
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What is the common feature of the windings in a transformer?
What is the common feature of the windings in a transformer?
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What is the relationship between the primary winding and secondary winding turns in a lossless transformer?
What is the relationship between the primary winding and secondary winding turns in a lossless transformer?
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In phasor notation, what is the relationship between the primary voltage Vp and the secondary voltage Vs in an ideal transformer?
In phasor notation, what is the relationship between the primary voltage Vp and the secondary voltage Vs in an ideal transformer?
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What is the relationship between the primary current Ip and the secondary current Is in an ideal transformer?
What is the relationship between the primary current Ip and the secondary current Is in an ideal transformer?
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What does an ideal transformer change in terms of voltages and currents?
What does an ideal transformer change in terms of voltages and currents?
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What is another term for a transformer that converts the distribution voltage down to the final level?
What is another term for a transformer that converts the distribution voltage down to the final level?
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Apart from power transformers, what other types of transformers are used?
Apart from power transformers, what other types of transformers are used?
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What is the significance of the dot marking on one winding's terminal in a transformer?
What is the significance of the dot marking on one winding's terminal in a transformer?
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In an ideal transformer, if the primary current flows into the dotted end of the primary winding, which direction will the secondary current flow?
In an ideal transformer, if the primary current flows into the dotted end of the primary winding, which direction will the secondary current flow?
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What is the formula to calculate the power supplied to an ideal transformer by the primary circuit?
What is the formula to calculate the power supplied to an ideal transformer by the primary circuit?
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How is the power supplied to the output circuits of an ideal transformer calculated?
How is the power supplied to the output circuits of an ideal transformer calculated?
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What is the relationship between the angles $\theta_p$ and $\theta_s$ in an ideal transformer?
What is the relationship between the angles $\theta_p$ and $\theta_s$ in an ideal transformer?
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What does an ideal transformer not affect in terms of the angles between voltages and currents?
What does an ideal transformer not affect in terms of the angles between voltages and currents?
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