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How do jogging circuits work?

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As with many other types of control circuits, there are different ways in which jogging can be accomplished but, basically, jogging is accomplished by preventing the holding contact from sealing the circuit around the start push button when the motor starter energizes. It should also be noted that jogging circuits require special motor starters rated for jogging duty.

Because the motor is connected to the power line regardless of which direction it operates, ____ contactor(s) is (are) needed for each direction.


A) two
B) the same
C) no
D) a separate

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Most reversing controllers contain ____________________ interlocks as well as electrical interlocks.

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What are the two methods of electrical interlocking?

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Two methods of electrical interlocking a...

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How can you reverse the direction of rotation of a single-phase split-phase motor?

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To reverse the direction of ro...

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A(n) ____________________ switch can be employed to provide jogging. The switch is used to break the connection to the holding contacts.

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If only one motor is in operation, only one overload relay is needed to protect the motor.

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The term jogging means to start a motor with short jabs of power at reduced voltage.

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The addition of a(n) ____ to the jog circuit eliminates the problem of the holding contacts making connection before the normally closed section of the jog push button reconnects.


A) control relay
B) flow switch
C) varistor
D) M coil

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The term inching actually means to start a motor with short jabs of power at full voltage.

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____________________ can be used to reduce the amount of voltage applied to the motor during inching, or reactors or resistors can be connected in series with the motor to reduce the current supplied by the power line.

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True reversing controllers contain two separate contactors and _____ overload relay(s) .


A) zero
B) one
C) two
D) three

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Why are the terms jogging and inching often used interchangeably?

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Although the two terms mean di...

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____________________ prevents some action from taking place until some other action has been performed.

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