Prepware: Basic Electricity Questions With Complete
Solutions
8001.
The working voltage of a capacitor in an AC circuit should be
correct answers At least 50% greater than the highest applied
voltage
8002-1.
What is the opposition to the flow of AC produced by a
magnetic field with generated back voltage (EMF) called?
correct answers Inductive reactance
8002-2.
Electrostatic fields are also known as correct answers Dielectric
fields
8002.
The term that describes the combined resistive forces in an AC
circuit is correct answers Impedance
8003.
The basis for transformer operation in the use of alternating
current is mutual correct answers Inductance
8004-1.
What factors strengthen a coil inductor? correct answers
Adding coils close together
8004.
,The opposition offered by a coil to the flow of alternating
current is called (disregard resistance) correct answers Inductive
reactance
8005.
An increase in which of the following factors will cause an
increase in the inductive reactance of a circuit? correct answers
Inductance and frequency
8006-1.
Capacitors are sometimes used in DC circuits to correct answers
Smooth out slight pulsations in current/voltage
8006. (Refer to Fig.1)
When different rated capacities are connected in series in a
circuit, the total capacitance is: correct answers Less than the
capacitance of the lowest rated capacitor
8007.
In an AC circuit, the effective voltage is correct answers Less
than the maximum instantaneous voltage
8008.
The amount of electricity a capacitor can store is directly
proportional to the correct answers Plate area and inversely
proportional to the distance between the plates
8009-1.
What is the total capacitance of a circuit containing three
capacitors in parallel with capacitances of .02 microfarad, 0.5
, microfarad, and .10 microfarad, respectively? correct
answers .170μF
8009-2.
Convert farads to microfarads by correct answers Multiplying
farads by 10 to the power of 6
8009-3.
Convert farads to picofarads by correct answers Multiplying
farads by 10 to the power of 12
8009. (Refer to Fig. 2)
What is the total capacitance of a certain circuit containing three
capacitors with capacitances of .02 microfarad, .05 microfarad,
and .10 microfarad, respectively? correct answers .0125μF.
8010.
Unless otherwise specified, any values given for current or
voltage in an AC circuit are assumed to be correct answers
Effective values
8011.
When different rated capacitors are connected in parallel in a
circuit, the total capacitance is
(Note: CT = C1 + C2 + C3 ...) correct answers Equal to the sum
of all the capacitances
8012.
When inductors are connected in series in a circuit, the total
inductance is (where the magnetic fields of each inductor do not
affect the others)
Solutions
8001.
The working voltage of a capacitor in an AC circuit should be
correct answers At least 50% greater than the highest applied
voltage
8002-1.
What is the opposition to the flow of AC produced by a
magnetic field with generated back voltage (EMF) called?
correct answers Inductive reactance
8002-2.
Electrostatic fields are also known as correct answers Dielectric
fields
8002.
The term that describes the combined resistive forces in an AC
circuit is correct answers Impedance
8003.
The basis for transformer operation in the use of alternating
current is mutual correct answers Inductance
8004-1.
What factors strengthen a coil inductor? correct answers
Adding coils close together
8004.
,The opposition offered by a coil to the flow of alternating
current is called (disregard resistance) correct answers Inductive
reactance
8005.
An increase in which of the following factors will cause an
increase in the inductive reactance of a circuit? correct answers
Inductance and frequency
8006-1.
Capacitors are sometimes used in DC circuits to correct answers
Smooth out slight pulsations in current/voltage
8006. (Refer to Fig.1)
When different rated capacities are connected in series in a
circuit, the total capacitance is: correct answers Less than the
capacitance of the lowest rated capacitor
8007.
In an AC circuit, the effective voltage is correct answers Less
than the maximum instantaneous voltage
8008.
The amount of electricity a capacitor can store is directly
proportional to the correct answers Plate area and inversely
proportional to the distance between the plates
8009-1.
What is the total capacitance of a circuit containing three
capacitors in parallel with capacitances of .02 microfarad, 0.5
, microfarad, and .10 microfarad, respectively? correct
answers .170μF
8009-2.
Convert farads to microfarads by correct answers Multiplying
farads by 10 to the power of 6
8009-3.
Convert farads to picofarads by correct answers Multiplying
farads by 10 to the power of 12
8009. (Refer to Fig. 2)
What is the total capacitance of a certain circuit containing three
capacitors with capacitances of .02 microfarad, .05 microfarad,
and .10 microfarad, respectively? correct answers .0125μF.
8010.
Unless otherwise specified, any values given for current or
voltage in an AC circuit are assumed to be correct answers
Effective values
8011.
When different rated capacitors are connected in parallel in a
circuit, the total capacitance is
(Note: CT = C1 + C2 + C3 ...) correct answers Equal to the sum
of all the capacitances
8012.
When inductors are connected in series in a circuit, the total
inductance is (where the magnetic fields of each inductor do not
affect the others)
