Recent questions and answers in Basic Electrical Technology

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answered Apr 3, 2018 in Lesson 35 Constructional Features of D.C Machines
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answered Apr 3, 2018 in Lesson 23 Ideal Transformer
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What is a pole mounted substation? At what voltage levels are the found in a power system? 

asked Apr 3, 2018 in Lesson 2 Generation, Transmission and Distribution of Electric Power an Overview
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The ammeter reading connected across a CT secondary is 3 A and the voltage reading connected across a PT is 90 V. If the specification of the CT and PT are respectively 1000 A/5 A and 6.6 kV/110 V, What is the actual current and voltage of the line? 

asked Apr 3, 2018 in Lesson 2 Generation, Transmission and Distribution of Electric Power an Overview
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With the help of a schematic diagram explain how a overcurrent relay protects a line during short circuit fault. 

asked Apr 3, 2018 in Lesson 2 Generation, Transmission and Distribution of Electric Power an Overview
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Give some typical value of generated voltage in a power station. Why is it necessary to step up the voltage further before transmitting?

asked Apr 3, 2018 in Lesson 2 Generation, Transmission and Distribution of Electric Power an Overview
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In a hydel power station, the number of poles of an alternator is 24. At what rpm the alternator must be driven to produce 50 Hz voltage?

asked Apr 3, 2018 in Lesson 2 Generation, Transmission and Distribution of Electric Power an Overview
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Name the types of generators (alternators) used in (1) thermal plant and (2) in hydel power plant. 

asked Apr 3, 2018 in Lesson 2 Generation, Transmission and Distribution of Electric Power an Overview
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What number of phases and frequency are adopted to generate, transmit and distribute electrical power in modern power system?

asked Apr 3, 2018 in Lesson 2 Generation, Transmission and Distribution of Electric Power an Overview
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answered Apr 3, 2018 in Lesson 2 Generation, Transmission and Distribution of Electric Power an Overview
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answered Apr 3, 2018 in Basic Electrical Technology
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