Exam Primer

# 5.9 Inductance and Capacitance

## Practice

B-005-09-01
If two equal-value inductors are connected in series, what is their total inductance?
Half the value of one inductor
The same as the value of either inductor
The value of one inductor times the value of the other
Twice the value of one inductor

B-005-09-02
If two equal-value inductors are connected in parallel, what is their total inductance?
Twice the value of one inductor
The same as the value of either inductor
The value of one inductor times the value of the other
Half the value of one inductor

B-005-09-03
If two equal-value capacitors are connected in series, what is their total capacitance?
Twice the value of one capacitor
The same as the value of either capacitor
The value of one capacitor times the value of the other
Half the value of either capacitor

B-005-09-04
If two equal-value capacitors are connected in parallel, what is their total capacitance?
The same as the value of either capacitor
Twice the value of one capacitor
The value of one capacitor times the value of the other
Half the value of one capacitor

B-005-09-05
What determines the inductance of a coil?
The core material, the number of turns used to wind the core and the frequency of the current through the coil
The core diameter, the number of turns of wire used to wind the coil and the type of metal used for the wire
The core material, the core diameter, the length of the coil and the number of turns of wire used to wind the coil
The core material, the core diameter, the length of the coil and whether the coil is mounted horizontally or vertically

B-005-09-06
What determines the capacitance of a capacitor?
The material between the plates, the area of one side of one plate, the number of plates and the spacing between the plates
The material between the plates, the number of plates and the size of the wires connected to the plates
The number of plates, the spacing between the plates and whether the dielectric material is N type or P type
The material between the plates, the area of one plate, the number of plates and the material used for the protective coating

B-005-09-07
If two equal-value capacitors are connected in parallel, what is their capacitance?
The same value of either capacitor
The value of one capacitor times the value of the other
Half the value of either capacitor
Twice the value of either capacitor

B-005-09-08
To replace a faulty 10 millihenry choke, you could use two:
Two 20 millihenry chokes in series
Two 5 millihenry chokes in series
Two 30 millihenry chokes in parallel
Two 5 millihenry chokes in parallel

B-005-09-09
Three 15 microfarad capacitors are wired in series. The total capacitance of this arrangement is:

B-005-09-10
Which series combinations of capacitors would best replace a faulty 10 microfarad capacitor?