A solenoid valve operates on the principle of:
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C. Electromagnetism
Which of the following is the symbol for impedance?
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D. Z
What would be the result if a 24 volt, 20 ohm contactor coil was wired in series with a
24 volt, 200 ohm control relay?
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B.Only the control relay would operate
What amperage measurement would you expect if you clamped your meter around
both wires in a two wire circuit?
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A.0 due to the cancellation of the two magnetic fields
The safety ground conductor is usually colored:
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B.Green
When resistors are wired parallel:
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B.The voltage drop across each resistor will be the same as the applied
source voltage
How much resistance must be placed in a 120 volt circuit to limit the current to 2
amps?
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A.60 ohms
Like charges will
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B.Repel each other
Which of the following statements about current is true?
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B.Current flow will increase when voltage increases
The synchronous speed of a four pole, 60 Hz single phase motor is:
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C. Electromagnetism
Which of the following is the symbol for impedance?
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D. Z
What would be the result if a 24 volt, 20 ohm contactor coil was wired in series with a
24 volt, 200 ohm control relay?
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B.Only the control relay would operate
What amperage measurement would you expect if you clamped your meter around
both wires in a two wire circuit?
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A.0 due to the cancellation of the two magnetic fields
The safety ground conductor is usually colored:
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B.Green
When resistors are wired parallel:
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B.The voltage drop across each resistor will be the same as the applied
source voltage
How much resistance must be placed in a 120 volt circuit to limit the current to 2
amps?
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A.60 ohms
Like charges will
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B.Repel each other
Which of the following statements about current is true?
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B.Current flow will increase when voltage increases
The synchronous speed of a four pole, 60 Hz single phase motor is:
