The correct temperature for quenching carbon steels is ________ degrees above the upper critical limit?
A) 50 B) 200 C) 100 D) 1450
A
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Before testing a run or start capacitor with an ohmmeter, the capacitor should be discharged with a 20,000-ohm 5-watt resistor.
Answer the following statement true (T) or false (F)
When must a two-pipe oil delivery system be used?
A) When using a high firing rate burner B) Only when the oil burner is a dual firing rate burner C) When the burner is above the tank and must lift the oil D) When the burner is at or below the level of the oil tank
When a ladder is used to gain access to a roof, a minimum of ___ rungs should show above the roofline.
a. three b. five c. seven d. one
Cuando se finaliza una tarea de corte y el equipo de oxigás ya no es necesario, el primer paso para apagar el equipo de corte oxigás es _____.
a. retirar los tornillos de ajuste del regulador de gas combustible y de oxígeno b. abrir la válvula del soplete de gas combustible c. cerrar la válvula del cilindro de gas combustible d. abrir la válvula del soplete de oxígeno