Question 1

Figure 12-2

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

Accepted Answer

A normally open 1M auxiliary contact connected in series with starter coil 2M prevents motor #2 from starting before motor #1.

Question 2

In a circuit in which three motors turn off in sequence, an overload on any one motor will not have an effect on the other motors.

Accepted Answer

In a circuit where motors are interconnected, an overload on one motor can affect the overall circuit performance, potentially causing voltage drops or triggering protective devices that could impact the operation of the other motors.

Question 3

Figure 12-4

The circuit shown in the accompanying figure permits ____________________ motors to start in sequence.

Accepted Answer

three,3

Question 4

How do automatic sequence control circuits which sense motor current work?

Accepted Answer

The answer of How do automatic sequence control circuits which...

Question 5

Figure 12-6

In the circuit shown in the figure above, what happens when the STOP button is pressed?

Accepted Answer

The answer of Figure 12-6

In...

Question 6

Some circuit requirements may demand that the motors turn off in sequence. What does such a circuit require?

Accepted Answer

The answer of Some circuit requirements may demand that the...

Question 7

The addition of two ____________________ make it possible to start motors in sequence from #1 to #3 with a time delay between the starting of each motor as well as stopping the motors in sequence from #3 to #1 with a time delay between the stopping of each motor.

Accepted Answer

The answer of The addition of two ____________________ make it...

Question 8

Figure 12-4

In the circuit shown in the accompanying figure, motor #3 starts five seconds after motor #____________________ starts.

Accepted Answer

The answer of Figure 12-4

In...

Question 9

What kinds of machines use sequence control? Give at least one example.

Accepted Answer

The answer of What kinds of machines use sequence control?...

Question 10

Circuits that permit the automatic starting of motors in sequence are rare.

Accepted Answer

Sequential motor starting circuits are common in industrial applications where motors need to be started in a specific order to manage power consumption and ensure the proper operation of machinery.

Question 11

Most ladder diagrams show coils connected in parallel.

Accepted Answer

Ladder diagrams typically show coils connected in series with their controlling devices, not in parallel. This arrangement allows for the sequential control of circuits.

Question 12

Normally open auxiliary contacts that control the starting sequence are often called permissive contacts because they permit action to take place.

Accepted Answer

Normally open auxiliary contacts are indeed referred to as permissive contacts because they allow or permit a specific action or sequence to occur when they close.

Question 13

Figure 12-4

In the circuit shown in the accompanying figure, timer coil TR1 is connected in ____________________ with the 1M starter coil.

Accepted Answer

The answer of Figure 12-4

In...

Question 14

____________________ forces motors to start or stop in a predetermined order.

Accepted Answer

The answer of ____________________ forces motors to start or stop...

Question 15

Sequence control can be achieved by several methods.

Accepted Answer

Sequence control is a fundamental concept in programming and automation that allows for the execution of tasks in a specific order. It can be achieved through various methods such as loops, conditional statements, and function calls, enabling complex operations to be performed in a controlled manner.

Quiz 12: Sequence Control

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

In a circuit in which three motors turn off in sequence, an overload on any one motor will not have an effect on the other motors.

Figure 12-4 The circuit shown in the accompanying figure permits ____________________ motors to start in sequence.

How do automatic sequence control circuits which sense motor current work?

Figure 12-6 In the circuit shown in the figure above, what happens when the STOP button is pressed?

Some circuit requirements may demand that the motors turn off in sequence. What does such a circuit require?

The addition of two ____________________ make it possible to start motors in sequence from #1 to #3 with a time delay between the starting of each motor as well as stopping the motors in sequence from #3 to #1 with a time delay between the stopping of each motor.

Figure 12-4 In the circuit shown in the accompanying figure, motor #3 starts five seconds after motor #____________________ starts.

What kinds of machines use sequence control? Give at least one example.

Circuits that permit the automatic starting of motors in sequence are rare.

Most ladder diagrams show coils connected in parallel.

Normally open auxiliary contacts that control the starting sequence are often called permissive contacts because they permit action to take place.

Figure 12-4 In the circuit shown in the accompanying figure, timer coil TR1 is connected in ____________________ with the 1M starter coil.

____________________ forces motors to start or stop in a predetermined order.

Sequence control can be achieved by several methods.