In which section of the 24 VDC power supply...

Question 1 of 2707066636eed28f7522a1c51da2e

In which section of the 24 VDC power supply circuit illustrated does the greatest change in voltage level take place when fed from 120 VAC ship's power? Illustration EL-0085

Back

Question 1 of 27070

Study area:

In which section of the 24 VDC power supply circuit illustrated does the greatest change in voltage level take place when fed from 120 VAC ship's power? Illustration EL-0085

No Illustration

This question does not have an illustration

🔍 Key Concepts

• Step-down transformer action between ship’s 120 VAC and the lower AC feeding the rectifier • Role of the rectifier and filter (sections B and C) – they change waveform shape more than overall RMS level • How a series regulator (section D) trims only a few volts to stabilize the output

💭 Think About

• Look at which block first connects directly to the 120 VAC ship’s supply. Where does that voltage get reduced to something closer to 24 V? • Compare how much the average voltage level changes from the input of each block to its output. In which block is this ratio of input-to-output voltage the largest? • Which parts mainly clean up and smooth the DC, versus which part actually makes a big step change in magnitude?

✅ Before You Answer

• Identify which section contains the transformer T1 and trace where 120 VAC enters and exits it • Estimate the approximate voltage at the output of the rectifier versus the regulated 24 VDC – is this a small or large difference? • Decide which section primarily changes voltage magnitude and which sections mainly change waveform shape and ripple