Describe the disadvantages of TRIACs when compared to SCRs.
What will be an ideal response?
TRIACs have disadvantages when compared to SCRs. TRIACs have current ratings as high as 25 amperes, but SCRs are available with current ratings as high as 1400 amperes. A TRIAC's maximum voltage rating is 500 volts, compared to an SCR's 2600 volts. TRIACs are designed for low frequency (50 to 400 hertz) whereas SCRs can handle up to 30,000 hertz. TRIACs also have difficulty switching power to inductive loads.
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____________________ can affect how feed is utilized for weight gain or milk production in cattle
Fill in the blank(s) with the appropriate word(s).
Before draining a manual transmission to replace the fluid, what should the technician do first?
A) Check service information for the specified fluid B) Check to see if the fill plug can be removed C) Purchase SAE 80W-90 gear lube D) Both A and B
The refrigerant in a condenser in a refrigeration system ____.
A. absorbs heat B. gives up heat C. changes to a vapor D. is under lower pressure than the evaporator
The most politically consequentialof the responses by the American colonists to the Intolerable Acts was
A. a rejection of the Quebec Act by the colonial legislatures. B. the summoning of the First Continental Congress in 1774. C. the Boston Massacre. D. the closing of Boston Harbor by the Massachusetts colonial assembly. E. call for a complete break with Great Britain and a declaration of independence.