True/False
Indicate whether the
statement is true or false.
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1.
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Jogging can be accomplished using a double-acting push button.
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2.
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You can obtain jogging control with the use of a selector switch.
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3.
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A control relay is used to provide jogging in one direction only.
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4.
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A selector switch is used to break the connection to the holding
contacts.
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Figure 10-5 
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5.
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A single pole, single throw toggle switch provides jog or run control in the
accompanying figure. If the switch is in the OFF position, the holding contacts can seal the circuit
when the START button is released.
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Completion
Complete each
statement.
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6.
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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 makes connection.
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Figure 10-4 
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7.
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In the circuit shown in the accompanying figure, when the forward jog push
button is pressed, the normally open section makes connection and provides power to
____________________.
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Figure 10-5
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8.
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In the accompanying figure, the START button acts as both the START and jog
button for the circuit. A(n) ____________________ can be used to provide the same basic type
control.
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Figure 10-3 
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9.
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Two circuits that employ a control relay to provide jogging are shown in the
accompanying figure. In both these circuits the control relay provides the ____________________
contacts, not the M starter.
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10.
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Inching control requires the use of a separate ____________________ because the
power supplied to the motor must be separate from full line voltage.
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Short Answer
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11.
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What is the difference between jogging and inching?
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12.
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For a START-STOP push button control circuit that has been reconnected so that
the START button is in parallel with both the STOP button and holding contact, how do you jog and run
the motor?
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13.
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What is a hazard of push buttons?
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Figure 10-4
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14.
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The accompanying figure shows a jogging circuit for a forward-reverse control.
What are normally closed F and R auxiliary contacts used for?
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15.
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How can you reduce the amount of voltage applied to the motor during
inching?
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