What does it mean when the electrode sticks to the base metal as you are trying to strike the arc?
A. Voltage setting is too high.
B. Current setting is too high.
C. Current setting is too low.
D. Voltage setting is too low.
Answer: C
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Which of the following is true with regard to steel erection?
a. Respirators are never needed when welding. b. A hot work permit may be required when welding. c.Welding epoxy-coated surfaces is safer than welding bare metal. d. Eye protection is not necessary when wearing a welding helmet.
Cuando se resuelven problemas de un arrancador de motor, el contactor se energiza cuando se presiona el botón de arranque, pero se desconecta de inmediato cuando se libera el botón de arranque. Lo más probable es que el problema esté:
a. en el cableado de alimentación (fusibles, interruptor de circuito, interruptor de desconexión) de manera ascendente respecto del arrancador del motor. b. en los componentes y el cableado del circuito de control de la bobina del contactor. c. en el motor o el cableado de alimentación de manera descendiente respecto del arrancador del motor. d. en los contactos de la bobina del contactor.
The direct production of an ____ from heat is sometimes referred to as the Seebeck effect.
a. electromagnetic force b. electromotive force c. electroconductive force d. electronic force
What causes a wire to become warm when current flows through it?
A. amperage B. resistance C. voltage D. divergence