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Author Question: A certain ac signal at 1000 Hz is applied across an inductor and a 100- resistor. If the power ... (Read 35 times)

chads108

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on: Jul 29, 2018
A certain ac signal at 1000 Hz is applied across an inductor and a 100- resistor. If the power factor of the circuit is 0.400, what is the impedance of this circuit?
 
  A) 150
  B) 200
  C) 250
  D) 100
  E) 300

Question 2

What is the change of entropy of water (Lf = 0.333 MJ/kg, Lv = 2.26 MJ/kg) when 450. grams of water:
 
  (a) changes from liquid to steam?
  (b) changes from ice to liquid?


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Mholman93

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

(a) 2.73 kJ/K
(b) 549. J/K


chads108

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

epscape

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Reply 3 on: Yesterday
Excellent

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