Voltage signals (waveforms) that do not go below zero are called ________
A) AC signals B) Pulse trains
C) DC coupled signals D) DC signals
B
You might also like to view...
Assess the achievements and shortcomings of "radical" regimes in the South. What did they do that is worth admiring and worth condemning? What else might they have done to better achieve their goals? What political, economic, and extra-legal obstacles did these "radical" regimes in the South encounter in achieving their goals?
What will be an ideal response?
Two technicians are discussing hard spots in brake drums. Technician A says the drum should be replaced. Technician B says the hard spots are caused by using riveted rather than bonded brake shoes. Which technician is correct?
A) Technician A only B) Technician B only C) Both Technicians A and B D) Neither Technician A nor B
Increasing the airflow across a coil:
A) Increases the static pressure drop across the coil. B) Increases the temperature drop across the coil. C) Decreases the static pressure drop across the coil. D) Increases the latent cooling capacity of the coil.
Why is evacuating a refrigeration system is important?
A) Increases in the system high-side pressure and temperature can only be accomplished by proper evacuation. B) Noncondensable gasses and moisture, the two most common system contaminants, can be removed through evacuation. C) Evacuation is the only procedure to ensure that noncondensable gasses and moisture are removed from HFC systems with a POE lubricant. D) Evacuation increases the system head pressure and compression ratio.