La alimentación para hacer funcionar sistemas de conmutación de baja tensión es suministrada por:
a. la línea que alimenta a la carga.
b. el ramal del conmutador.
c. un transformador.
d. el relé.
c. un transformador.
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Shock absorbers control spring action.
Answer the following statement true (T) or false (F)
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If a steam turbine accepted steam at 6 MPa and 600ºC and the steam left the turbine at 20 kPa with a quality of 1.0, the adiabatic efficiency would be nearest:
A) 88% B) 85% C) 81% D) 78%
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The median annual earnings of wastewater treatment plant operators was _______ in May 2010
A) 40,770 B) 55,460 C) ?59,770 D) 77,400
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A polarized electrical receptacle is used for _____
A) all power tools B) three-wire power cords C) double-insulated tools D) plugs with the ground pin cut off
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