Susan Brown

[Susan Brown]

correct!

[Susan Brown]

1.a load does not consume current though a load does have voltage drop

Correct

3. unsure – get out digital multimeter for volt measurement of what on a washer?

You basically follow the line voltage supply into the machine, making voltage measurements to see where you are losing it.

4. not continuity – easy to see why I missed it because in 2nd video Samurai does the continuity test before live test (halfsplitting eletric dryer heater element)

correct, voltage is best

5. Not L1 N1 – L2 N2 is better choice for testing if component is outputting voltage

correct

12. Overthought this one – observed it was a 120v range and selected bigger outlet anyway for oven must = 240 volts

No – it is a gas range, so only needs 120v

[Susan Brown]

Ah, I see. Yes, we are talking about it shutting off completely. Usually these set-points will only be exceeded if the refrigerator is malfunctioning, but it could also be someone left the door open for too long and it warmed up. In the second case, the ice maker would stop functioning until the temperatures got back down below the set point, then it would start back up again.

[Susan Brown]

Hi Cynthia,

Did you see this explanation that shows up in the quiz results after you submit your answers?

Example: if my particular model fridge has a cutoff temperature of 16 degrees, and the freezer starts warming up, once it hits 17 degrees the ice maker will stop working. If it goes back down to 16 degrees or below, it will start working again. It is rare that you will come across a model that has a cutoff temperature below 8 or above 17 degrees. So, we are looking for an answer in that range.

So – each fridge has a particular cutoff temperature above which the ice maker will not work. One model might be 16 degrees, yours might be 17 degrees, your neighbor’s might be 14 degrees.

Does that make sense?

[Susan Brown]

Hi Terrance,

The question is: Which of these measurements represents the lowest pressure?

0 microns is absolutely no pressure, or a perfect vacuum. So the lower the number of microns, the lower the pressure.

The correct answer is 1 micron.

[Susan Brown]

Hi Peter,
The correct answer is line and neutral, not ground.
Remember – returning current is on the neutral line. The previous question was:

Under normal circumstances, current on line should always ___ current on neutral.

with the answer “equal”. That is what the GFCI is checking for.

[Susan Brown]

One side to the other on the open switch will result in line voltage showing up at the switch

Correct. Is that voltage drop or potential?

[Susan Brown]

Hi Olsen,

Water and detergent are what remove the dirt/soil from clothing, so the purpose of the agitator is to circulate the clothes through the water.

[Susan Brown]

Is this in the section on Series circuits?

When the circuit is active (closed), there will be current flowing through the load(s), and you will measure a voltage drop across the load(s).

Will you measure any voltage difference across a closed switch?

When the circuit is open – let’s say a switch opens – obviously the current stops flowing. Will you still measure a voltage drop if you put your probes on either side of the load? Will you measure a voltage difference from one side of the switch to the other now?

[Susan Brown]

Sorry for the delay in replying! Somehow we missed seeing your question.

You always use DC Ground as your reference for DC voltage testing, never chassis or neutral.

AC and DC power supplies are like parallel universes. If you’re measuring a DC voltage, your reference is DC ground. Doesn’t make any sense to use an AC reference for a DC measurement.

[Susan Brown]

Hi Terrance,

First of all – I’ve emailed you a couple of times about your Module 1 exam score, which does not meet the Certification requirements. Did you receive those emails?

As for this question about how heat moves in a sealed system unit:
If you look at the diagram of a normal operating cycle, you’ll see the two points where heat is absorbed (in the evaporator) and then heat is released (in the condenser). So the correct answer is “Because liquid refrigerant vaporizing in the evaporator gets condensed back to a liquid in the condenser”

[Susan Brown]

We tell you how to access that text in the Orientation unit at the beginning of the course.

[Susan Brown]

For #3, remember that when one circuit fails, it has *no* effect on any other circuits that are in parallel to it. Your other answers are correct.

[Susan Brown]

That’s why we encourage using the “Zen trick”. Things can be drawn different ways, but if you trace out Line and Neutral you can determine the actual situation. [answer hidden]

• This reply was modified 2 years, 4 months ago by Susan Brown.

[Susan Brown]

Better! You are correct about the Safety and the Main now.

The ignitor and booster are in parallel, but your conclusion is incorrect. [answer hidden]

• This reply was modified 2 years, 4 months ago by Susan Brown.
• This reply was modified 2 years, 4 months ago by Susan Brown.

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