Deck 9: Forward-Reverse Control

Full screen (f)
exit full mode
Question
What would happen if both contactors were energized at the same time?
Use Space or
up arrow
down arrow
to flip the card.
Question
Electrical interlocking can be accomplished by connecting the normally closed ____________________ contacts on one contactor in series with the coil of the other contactor.
Question
If R coil energizes, all R contacts change position.
Question
Magnetic reversing starters generally change T leads ____________________ and ____________________ to reverse the motor.
Question
Most reversing controllers only contain mechanical interlocks.
Question
How is mechanical interlocking accomplished?
Question
What does interlocking do?
Question
____________________  forces one  contactor to be de-energized before the other one can be  energized.
Question
One of the methods of electrical interlocking is accomplished with the use of double-acting push buttons.
Question
Figure 9-12

Figure 9-12    The accompanying figure shows the components needed to construct a(n) ____________________ control circuit.<div style=padding-top: 35px>
The accompanying figure shows the components needed to construct a(n) ____________________ control circuit.
Question
How are mechanical interlocks shown in a schematic diagram?
Question
The motor is connected to the power line regardless of which direction it operates.
Question
Four methods of electrical interlocking are available.
Question
Figure 9-6

Figure 9-6    In the accompanying figure, the dashed lines drawn between the push buttons indicate that they are ____________________ connected.<div style=padding-top: 35px>
In the accompanying figure, the dashed lines drawn between the push buttons indicate that they are ____________________ connected.
Question
How can the direction of rotation of any three phase motors be reversed?
Unlock Deck
Sign up to unlock the cards in this deck!
Unlock Deck
Unlock Deck
1/15
auto play flashcards
Play
simple tutorial
Full screen (f)
exit full mode
Deck 9: Forward-Reverse Control
1
What would happen if both contactors were energized at the same time?
Having both contactors energized would result in two of the three phase lines being shorted together.
2
Electrical interlocking can be accomplished by connecting the normally closed ____________________ contacts on one contactor in series with the coil of the other contactor.
auxiliary
3
If R coil energizes, all R contacts change position.
True
4
Magnetic reversing starters generally change T leads ____________________ and ____________________ to reverse the motor.
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
5
Most reversing controllers only contain mechanical interlocks.
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
6
How is mechanical interlocking accomplished?
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
7
What does interlocking do?
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
8
____________________  forces one  contactor to be de-energized before the other one can be  energized.
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
9
One of the methods of electrical interlocking is accomplished with the use of double-acting push buttons.
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
10
Figure 9-12

Figure 9-12    The accompanying figure shows the components needed to construct a(n) ____________________ control circuit.
The accompanying figure shows the components needed to construct a(n) ____________________ control circuit.
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
11
How are mechanical interlocks shown in a schematic diagram?
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
12
The motor is connected to the power line regardless of which direction it operates.
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
13
Four methods of electrical interlocking are available.
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
14
Figure 9-6

Figure 9-6    In the accompanying figure, the dashed lines drawn between the push buttons indicate that they are ____________________ connected.
In the accompanying figure, the dashed lines drawn between the push buttons indicate that they are ____________________ connected.
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
15
How can the direction of rotation of any three phase motors be reversed?
Unlock Deck
Unlock for access to all 15 flashcards in this deck.
Unlock Deck
k this deck
locked card icon
Unlock Deck
Unlock for access to all 15 flashcards in this deck.