E5B01:

What is the term for the time required for the capacitor in an RC circuit to be charged to 63.2% of the applied voltage or to discharge to 36.8% of its initial voltage?

1. An exponential rate of one
2. One time constant
3. One exponential period
4. A time factor of one

E5B02:

What letter is commonly used to represent susceptance?

1. G
2. X
3. Y
4. B

E5B03:

How is impedance in polar form converted to an equivalent admittance?

1. Take the reciprocal of the angle and change the sign of the magnitude
2. Take the reciprocal of the magnitude and change the sign of the angle
3. Take the square root of the magnitude and add 180 degrees to the angle
4. Square the magnitude and subtract 90 degrees from the angle

E5B04:

What is the time constant of a circuit having two 220 microfarad capacitors and two 1 megohm resistors, all in parallel?

1. 55 seconds
2. 110 seconds
3. 440 seconds
4. 220 seconds

E5B05:

What happens to the magnitude of a pure reactance when it is converted to a susceptance?

1. It is unchanged
2. The sign is reversed
3. It is shifted by 90 degrees
4. It becomes the reciprocal

E5B06:

What is susceptance?

1. The magnetic impedance of a circuit
2. The ratio of magnetic field to electric field
3. The imaginary part of admittance
4. A measure of the efficiency of a transformer

E5B07:

What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 500 ohms, R is 1 kilohm, and XL is 250 ohms?

1. 68.2 degrees with the voltage leading the current
2. 14.0 degrees with the voltage leading the current
3. 14.0 degrees with the voltage lagging the current
4. 68.2 degrees with the voltage lagging the current

E5B08:

What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 100 ohms, R is 100 ohms, and XL is 75 ohms?

1. 14 degrees with the voltage lagging the current
2. 14 degrees with the voltage leading the current
3. 76 degrees with the voltage leading the current
4. 76 degrees with the voltage lagging the current

E5B09:

What is the relationship between the AC current through a capacitor and the voltage across a capacitor?

1. Voltage and current are in phase
2. Voltage and current are 180 degrees out of phase
3. Voltage leads current by 90 degrees
4. Current leads voltage by 90 degrees

E5B10:

What is the relationship between the AC current through an inductor and the voltage across an inductor?

1. Voltage leads current by 90 degrees
2. Current leads voltage by 90 degrees
3. Voltage and current are 180 degrees out of phase
4. Voltage and current are in phase

E5B11:

What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 25 ohms, R is 100 ohms, and XL is 50 ohms?

1. 14 degrees with the voltage lagging the current
2. 14 degrees with the voltage leading the current
3. 76 degrees with the voltage lagging the current
4. 76 degrees with the voltage leading the current

E5B12:

What is admittance?

1. The inverse of impedance
2. The term for the gain of a field effect transistor
3. The turns ratio of a transformer
4. The inverse of Q factor