Refer to the accompanying figure. What changes occur if the stop button is momentarily pressed?
What will be an ideal response?
If the stop button is momentarily pressed, the circuit is interrupted at contacts 1–2, and coil M is de-energized. Contacts M then open.
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Para una halada recta, la longitud mínima de una caja de derivaciones con dos tuberías eléctricas de 1" y una tubería eléctrica de 4" en una pared, y dos tuberías eléctricas de 1" y una tubería eléctrica de 4" entrando por la pared opuesta es _____. (Suponga que el tamaño del conductor es n.° 4 AWG o superior, a una tensión inferior a 600V).
a. 24" (60,96 cm) b. 26" (66,04 cm) c. 32" (81,28 cm) d. 34" (86,36 cm)
Antifreeze should be used on the cooling tower even if the plan is to drain the tower for cold spells, because:
A) Antifreeze aids in draining the tower. B) Most municipalities require it. C) A sudden cold spell can freeze the system. D) Antifreeze descales the pipes.
A voltage regulator that uses an error detection circuit is known as a
A) shunt feedback regulator B) switching regulator C) load regulator D) line regulator
You can switch from one shell to another by typing the shell's name on the command line.
Answer the following statement true (T) or false (F)