A máquina de café expresso
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EM 4.13 Comprehension Test — Chapter 4 questionário
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1. EM 4.1
In what year was a PID first installed in a
doméstico
espresso machine?
1961
2008
1990
2001
2. EM4.2
In what year was the first PID-controlled multi-boiler released?
1990
2008
2001
1961
3. EM4.3
What is the definition of
temperatura de deslocamento
?
The difference between the temperature of the brew boiler and the temperature of the espresso exiting the portafilter
The difference between the temperature of the water in the heat exchanger and the temperature of the water in the boiler
The difference between the temperature of the water in the boiler and the temperature of the water exiting the group head
The difference between the temperature of the water exiting the group head and the temperature of the
disco
4. EM4.4
Fill in the blank: To enable temperature profiling, it is useful to have a low _____ in the group head.
temperatura
massa térmica
water level
profile
5. EM4.5
How does the Decent espresso machine manage flow?
By counting the pulses of the machine’s vibration pump
By using an app that links to your smartphone
By having a group with a very high
massa térmica
By using PIDs in three separate parts of the machine