When contacts must be debounced, a circuit called a ____ switch is used.
A. bounce-control
B. bounceless
C. bounce-free
D. nonbounce
Answer: B
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Prescriptive-type tables for use in project specifications have been developed by the _____
a. American Cement Specification Board b. American Concrete Institute c. American Concrete Council d. American Cement Manufacturers' Association
Quartz and glass panel electric units are classified as ____.
A. natural-convection heaters B. forced-convection heaters C. forced-draft conductors D. radiant heaters
Which of the following statements about PTC heaters is not true?
A. Some vehicles have a PTC heating element in the heater core.
B. Some vehicles have a PTC element installed in an air duct from the blower housing to increase the air temperature in the ducts.
C. PTC heaters are electronically controlled and work with the cooling system to provide hot coolant.
D. PTC elements are small ceramic stones that react quickly to changes in current.
Name the two types of plastics or polymers structure.
What will be an ideal response?