Blog

Figure 12-2 In the circuit shown in the figure above, what prevents motor #2 from starting before motor #1?

Figure 9-6 In the accompanying figure, the dashed lines drawn between the push buttons indicate that they are ____________________ connected.

In schematics, what do dashed lines between components indicate?

Most control transformers are made with one primary winding and two secondary windings.

The advantage of mercury relays is that each time the relay is used the contact is renewed, eliminating burning and pitting caused by an arc when connection is made or broken.

Figure 11-6 The accompanying figure shows a bellows-operated ____________________ timer.

Magnetic reversing starters generally change T leads ____________________ and ____________________ to reverse the motor.

How can the direction of rotation of any three phase motors be reversed?

  The contact symbols in the above diagram indicate _______________________________.

____________________ diagrams show electrical components in their electrical sequence without regard for physical location.