1.) A multipurpose transformer has a secondary coil with several points at which a voltage can be extracted, giving outputs of 5.60, 12.0, and 480 V.
(a)
The input voltage is 140 V to a primary coil of 300 turns. What are the numbers of turns in the parts of the secondary used to produce the output voltages?
5.60 V ________turns
12.0 V_________ turns
480 V ________turns
(b)
If the maximum input current is 5.50 A, what are the maximum output currents (in A) (each used alone)?
5.60 V _____A
12.0 V ______A
480 V_______ A
2.)
a) What is the characteristic time constant (in s) of a 22.5 mH inductor that has a resistance of 4.25 Ω?
b)If it is connected to a 12.0 V battery, what is the current (in A) after 12.5 ms? Answer: ______ A
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