The United States trend toward an increased ownership of pets benefits from
A. An aging population
B. An increasing proportion of single-person households
C. Decreasing costs associated with pet ownership
D. All of the above
E. A and B above
E
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The production of an induced voltage requires a conductor (generally in the form of a coil), a magnetic field, and ____ motion between the two.
a. transient b. nonpolarized c. static d. relative
Why do some gas furnaces not require an electrical power supply?
A) They are ignited and extinguished manually with no thermostatic control B) The gas valve is operated with the voltage generated by the thermopile safety C) No gas furnaces require electricity, they operate on gas D) Once lighted, they never shut off
A micron is a unit of length equal to:
A) 1/1000th of a kilometer. B) 1/1000th of an inch. C) 1/1000th of a meter. D) 1/1000th of a millimeter.
Find the armature current of a series DC motor with an armature resistance of 7 ohms and a field coil resistance of 15 ohms when 220 volts are applied.
What will be an ideal response?