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Author Question: A Carnot refrigerator has a coefficient of performance of 2.5. The refrigerator consumes 50 W of ... (Read 160 times)

sheilaspns

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on: Jul 29, 2018
A Carnot refrigerator has a coefficient of performance of 2.5. The refrigerator consumes 50 W of power. How much heat is removed from the interior of the refrigerator in 1 hour?
 
  A) 720 kJ B) 180 kJ C) 450 kJ D) 7.5 kJ E) 72 kJ

Question 2

A series ac circuit consists of a voltage source of frequency 60 Hz and source voltage amplitude 345 volts, a 701- resistor, a 1.6-F capacitor, and an inductor of inductance L.
 
  (a) What must be the value of L for the phase angle to be zero? (b) When L has the value calculated in part (a), what is the current amplitude in the circuit?


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dellikani2015

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

C

Answer to Question 2

(a) 4.4 H (b) 0.492 A


sheilaspns

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

Viet Thy

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Reply 3 on: Yesterday
Gracias!

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