is the formula for finding the total inductance of a circuit when there is
more than one inductor connected in series.
Select one:
True
False
The correct answer is 'True'.
The total inductance when there is more than one inductor connected in parallel can be
determined by the formula:
Select one:
True
False
The correct answer is 'True'.
The total inductance of series and parallel inductors in a circuit is calculated the same
way as the total resistance is calculated for series and parallel resistors in a circuit.
Select one:
True
False
The correct answer is 'True'.
In order to find the total inductive reactance in a series or parallel circuit containing more
than one inductor, the same method that was used to find total inductance can be used.
Select one:
True
False
The correct answer is 'True'.
In the circuit shown, three coils are placed in series. The total inductive reactance for this
circuit is 150 ohms. Inductors L and L have inductive reactances of 60 ohms each.
What is the inductive reactance of L ?
The correct answer is: 30 Ω
Three coils with inductance values of 250 millihenries, 3.5 henries, and 600 millihenries
are connected in series. What is the total inductance? (Round the FINAL answer to two
decimal places of the unit shown.).
The correct answer is: 4.35
Three coils with inductance values of 250 millihenries, 3.5 henries, and 600 millihenries
are connected in series. A 24-volt, 400-hertz signal is applied to the circuit. What is the
total current? (Round the FINAL answer to four decimal places.)
The correct answer is: 0.0022 A
Three coils with inductance values of 250 millihenries, 3.5 henries, and 600 millihenries
are connected in series. A 24-volt, 30-hertz signal is applied to the circuit. What is the
current? (Round the FINAL answer to three decimal places.)
The correct answer is: 0.029 A
Adding additional inductors in series in a circuit that already contains inductors will ?
the total inductive reactance of the circuit.
a.
decrease
b.
increase
The correct answer is: increase
Adding additional inductors in parallel in a circuit that already contains inductors will ?
the total inductive reactance of the circuit.
a.
decrease
b.
increase
The correct answer is: decrease
Two inductors are connected in parallel and fed by a one-kilohertz source. Solve for the
following: (Round the FINAL answers to two decimal places.)
What is the total inductance (LT )? 3.33
What is the inductive reactance of L1 ? 62832
What is the inductive reactance of L2 ? 31416
What is the total inductive reactance (XLT )?
The correct answer is: 3.33 H
The correct answer is: 62832 Ω
The correct answer is: 31416 Ω
The correct answer is: 20944 Ω
Two identical coils are connected in series in an industrial control circuit. When a 240-
volt, 60-hertz source is applied to the circuit, the total current is 2.2 amperes. Solve for
the following:
What is the total inductive reactance of the circuit at 60 hertz?
What is the total inductance of the circuit?
What is the total inductive reactance of the circuit at when a 220-volt, 50-hertz source
is substituted?
What is the total current when fed by the 220-volt, 50-hertz source?
The correct answer is: 109.09 Ω
The correct answer is: 0.289 H
The correct answer is: 90.91 Ω
The correct answer is: 2.42 A
Calculate the current in a circuit that contains a 10-millihenry coil (L ) and a 25-
millihenry coil (L ) in series with a 6-volt, 1-kilohertz source. Then calculate the current
again if the frequency was doubled to 2 kilohertz. (Round the FINAL answers to at least
two decimal places in the specified unit.)
The total current at 1 kilohertz is ? mA
The total current at 2 kilohertz is ? mA
The correct answer is: 27.28 mA
The correct answer is: 13.64 mA
Calculate the current in a circuit that contains a 10-millihenry coil (L ) and a 25-
millihenry coil (L ) in parallel with a 6-volt, 1-kilohertz source. Then calculate the current
again if the frequency was doubled to 2 kilohertz.
The total current at 1 kilohertz is ? mA
The total current at 2 kilohertz is ? mA
The correct answer is: 133.69 mA
The correct answer is: 66.85 mA