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Author Question: How can the windings ratio be safely determined for an unmarked transformer? A) Apply known low ... (Read 100 times)

FButt

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on: Jul 28, 2018
How can the windings ratio be safely determined for an unmarked transformer?
 
  A) Apply known low voltage ac to the primary and measure the secondary output. The ratio of the voltages is the same as the windings ratio.
  B) The turns ratio is the same as the ratio of primary resistance to secondary resistance ratio.
  C) Standardized wire color codes indicate windings ratio.
  D) either A or C

Question 2

What is the minimum dc working voltage rating for a capacitor that must drop 120 VRMS?
 
  A) 170 V B) 339 V C) 84.8 V D) 120 V


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nyrave

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Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

A


FButt

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Reply 2 on: Jul 28, 2018
Gracias!

Joy Chen

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Reply 3 on: Yesterday
Excellent

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