ASA Prep ware General Written master
study guide60
The working voltage of a capacitor in an AC circuit should be... - ANSWERS-at least 50% greater
than the highest applied voltage
The term that described the combined resistive forces in an AC circuit is... - ANSWERS-
Impedance
What is the opposition to the flow of AC produced by a magnetic field with a generated back
voltage (EMF) called? - ANSWERS-Inductive resistance
Electrostatic fields are also known as... - ANSWERS-Dielectric fields
The basis for transformer operation in the use of alternating current is mutual... - ANSWERS-
inductance
What factors strengthen a coil inductor? - ANSWERS-Adding coils close together
An increase in which of the following factors will cause an increase in the inductive reactance of
a circuit? - ANSWERS-Inductance and frequency
When different rated capacitors are connected in series in a circuit, the total capacitance is... -
ANSWERS-Less than the capacitance of the lowest rated capacitor
Capacitors are sometimes used in DC circuits to... - ANSWERS-Smooth out slight pulsations in
current/voltage
,The amount of electricity a capacitor can store is directly proportional to the... - ANSWERS-Plate
area and inversely proportional to the distance between the plates.
What is the total capacitance of a certain circuit containing three capacitors in series with
capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively? -
ANSWERS-.0125 microfarads
What is the total capacitance of a circuit containing three capacitors in parallel with
capacitances of .02 microfarads, .05 microfarads, .10 microfarads, respectively? - ANSWERS-.170
microfarads
Convert farads to microfarads by... - ANSWERS-Multiplying farads by 10 to the power of 6.
Convert farads to picofarads by... - ANSWERS-multiplying farads by 10 to the power of 12
Unless otherwise specified, any values given for current or voltage in an AC circuit are assumed
to be - ANSWERS-effective values
When different rated capacitors are connected in parallel in a circuit, the total capacitance is... -
ANSWERS-equal to the sum of all the capacitances
When inductors are connected in series in a circuit, the total inductance is - ANSWERS-equal to
the sum of the individual inductances.
When more than two inductors of different inductances are connected in parallel in a circuit,
the total inductance is... - ANSWERS-less than the inductance of the lowest rated inductor
,What requires the most electrical power during operation? - ANSWERS-Two lights requiring 3
amperes each in a 24 volt parallel system
A 12V electric motor has 1,000 Watts input and 1 horsepower output. Maintaining the same
efficiency, how much input power will a 24 volt, 1 horsepower electric motor require. -
ANSWERS-1,000
How many amperes will a 28 volt generator be required to supply to a circuit containing five
lamps in parallel, three of which have a resistance of 6 ohms each and two of which have a
resistance of 5 ohms each? - ANSWERS-25.2 amps
A 1 horsepower, 24 Volt DC electric motor that is 80 percent efficient requires 932.5 watts. How
much power will a 1-horsepower, 12 volt DC electric motor that is 75 percent efficient require? -
ANSWERS-994.6 watts
The potential difference between two conductors which are from each other is measured in... -
ANSWERS-Volts
Which effect does not apply to the movement of the electrons flowing in a conductor. -
ANSWERS-Static energy
A 24V source is required to furnish 48 watts to a parallel circuit consisting of four resistors of
equal value. What is the voltage drop across each resistor? - ANSWERS-24V
When calculating power in a reactive or inductive AC circuit, the true power is... - ANSWERS-
Less than the apparent power.
What is the impedance of an AC-series circuit consisting of an inductor with a reactance of 10
ohms, a capacitor with a reactance of 4 ohms and a resistor with a resistance of 8 ohms? -
ANSWERS-10 ohms
, What will a voltmeter read if properly connected across a closed switch in a circuit with
electrical power on? - ANSWERS-0V
The correct way to connect a test voltmeter in a circuit is... - ANSWERS-in parallel with a unit
Which term means .001 Amp - ANSWERS-milliamp
what does the leter Q symbolize when measuring electrical charge? - ANSWERS-Coulomb
A cabin entry light of 10 watts and a dome light of 20 watts are connected in parallel to a 30 Volt
source. If the voltage across the 10 watt light is measured, it will be... - ANSWERS-Equal to the
voltage across the 20 watt
A 14 ohm resistor is to be installed in a series circuit carrying .05 amps. How much power will
the resistor be required to dissipate? - ANSWERS-At least 35 milliwatts
.002KV equals... - ANSWERS-2.0 volts
The opposition offered by a coil to the flow of alternating current is called... - ANSWERS-
inductive reactance
Diodes are used in electrical power supply circuits primarily as... - ANSWERS-rectifiers
If each cell, connected in series, equals 2 volts, how would a 12-cell lead acid battery be rated? -
ANSWERS-24 volts
study guide60
The working voltage of a capacitor in an AC circuit should be... - ANSWERS-at least 50% greater
than the highest applied voltage
The term that described the combined resistive forces in an AC circuit is... - ANSWERS-
Impedance
What is the opposition to the flow of AC produced by a magnetic field with a generated back
voltage (EMF) called? - ANSWERS-Inductive resistance
Electrostatic fields are also known as... - ANSWERS-Dielectric fields
The basis for transformer operation in the use of alternating current is mutual... - ANSWERS-
inductance
What factors strengthen a coil inductor? - ANSWERS-Adding coils close together
An increase in which of the following factors will cause an increase in the inductive reactance of
a circuit? - ANSWERS-Inductance and frequency
When different rated capacitors are connected in series in a circuit, the total capacitance is... -
ANSWERS-Less than the capacitance of the lowest rated capacitor
Capacitors are sometimes used in DC circuits to... - ANSWERS-Smooth out slight pulsations in
current/voltage
,The amount of electricity a capacitor can store is directly proportional to the... - ANSWERS-Plate
area and inversely proportional to the distance between the plates.
What is the total capacitance of a certain circuit containing three capacitors in series with
capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively? -
ANSWERS-.0125 microfarads
What is the total capacitance of a circuit containing three capacitors in parallel with
capacitances of .02 microfarads, .05 microfarads, .10 microfarads, respectively? - ANSWERS-.170
microfarads
Convert farads to microfarads by... - ANSWERS-Multiplying farads by 10 to the power of 6.
Convert farads to picofarads by... - ANSWERS-multiplying farads by 10 to the power of 12
Unless otherwise specified, any values given for current or voltage in an AC circuit are assumed
to be - ANSWERS-effective values
When different rated capacitors are connected in parallel in a circuit, the total capacitance is... -
ANSWERS-equal to the sum of all the capacitances
When inductors are connected in series in a circuit, the total inductance is - ANSWERS-equal to
the sum of the individual inductances.
When more than two inductors of different inductances are connected in parallel in a circuit,
the total inductance is... - ANSWERS-less than the inductance of the lowest rated inductor
,What requires the most electrical power during operation? - ANSWERS-Two lights requiring 3
amperes each in a 24 volt parallel system
A 12V electric motor has 1,000 Watts input and 1 horsepower output. Maintaining the same
efficiency, how much input power will a 24 volt, 1 horsepower electric motor require. -
ANSWERS-1,000
How many amperes will a 28 volt generator be required to supply to a circuit containing five
lamps in parallel, three of which have a resistance of 6 ohms each and two of which have a
resistance of 5 ohms each? - ANSWERS-25.2 amps
A 1 horsepower, 24 Volt DC electric motor that is 80 percent efficient requires 932.5 watts. How
much power will a 1-horsepower, 12 volt DC electric motor that is 75 percent efficient require? -
ANSWERS-994.6 watts
The potential difference between two conductors which are from each other is measured in... -
ANSWERS-Volts
Which effect does not apply to the movement of the electrons flowing in a conductor. -
ANSWERS-Static energy
A 24V source is required to furnish 48 watts to a parallel circuit consisting of four resistors of
equal value. What is the voltage drop across each resistor? - ANSWERS-24V
When calculating power in a reactive or inductive AC circuit, the true power is... - ANSWERS-
Less than the apparent power.
What is the impedance of an AC-series circuit consisting of an inductor with a reactance of 10
ohms, a capacitor with a reactance of 4 ohms and a resistor with a resistance of 8 ohms? -
ANSWERS-10 ohms
, What will a voltmeter read if properly connected across a closed switch in a circuit with
electrical power on? - ANSWERS-0V
The correct way to connect a test voltmeter in a circuit is... - ANSWERS-in parallel with a unit
Which term means .001 Amp - ANSWERS-milliamp
what does the leter Q symbolize when measuring electrical charge? - ANSWERS-Coulomb
A cabin entry light of 10 watts and a dome light of 20 watts are connected in parallel to a 30 Volt
source. If the voltage across the 10 watt light is measured, it will be... - ANSWERS-Equal to the
voltage across the 20 watt
A 14 ohm resistor is to be installed in a series circuit carrying .05 amps. How much power will
the resistor be required to dissipate? - ANSWERS-At least 35 milliwatts
.002KV equals... - ANSWERS-2.0 volts
The opposition offered by a coil to the flow of alternating current is called... - ANSWERS-
inductive reactance
Diodes are used in electrical power supply circuits primarily as... - ANSWERS-rectifiers
If each cell, connected in series, equals 2 volts, how would a 12-cell lead acid battery be rated? -
ANSWERS-24 volts
