The stationary magnet of a DC motor is represented by the _____
a. armature
b. field poles
c. commutator
d. rotor
b
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Most soil organisms are heterotrophs
Indicate whether the statement is true or false
If an uncharged capacitor, a resistor, a switch and a 12 V battery are connected in series, at approximately what time will the capacitor reach full charge?
A) R × C B) 12 × R × C C) 5 × R × C D) The time cannot be predicted.
Companies traditionally offer craft-professional training _____.
a. that a supervisor leads in a classroom setting b. only in a classroom setting c. in a hands-on setting, where they learn from an experienced worker d. on a self-study basis
What causes the nitrogen and oxygen in the air to combine and form NOx?
A) Any spark will cause this to occur B) Chemical reaction in the catalytic converter C) Heat above 2,500°F (1,370°C) D) Sunlight