List the physics principles that make heat pump operation possible
What will be an ideal response?
Heat exists down to absolute zero, which is –460°F.
Heat will only flow from a higher temperature to a lower temperature Gases become warmer when compressed.
Most matter can be in a solid (ice), liquid (water) or gas
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A power-limited Class 3 power supply must never exceed _________.
A. 30V, 100VA B. 150V, 100VA C. 300V, 100VA D. 600V, 1000VA
A number plus 10 equals 15. Find the number.
A. 4 B. 5 C. 6 D. 7
What would you do when glue overflows onto the skin in the application of nail tips:
What will be an ideal response?What will be an ideal response?What will be an ideal response?
The subsequent problems deal with the circuit shown below. Assume that the diode is ideal (i.e., has a 0V forward bias voltage).
If VA=2V and VB=5V, what is the steady state value for current I?
A. ?1/3000 A B. ?1/3 mA C. 0 D. ?3000 A E. ?3 mA