Deck 8: Ac Circuits

ملء الشاشة (f)
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سؤال
____ are caused by voltages induced into the conductors and other surrounding metal parts.

A) Hysteresis currents
B) Skin currents
C) Dielectric currents
D) Eddy currents
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لقلب البطاقة.
سؤال
Most circuits contain more than pure resistance, pure inductance, or pure capacitance; therefore, each path of a parallel circuit must be treated as a separate ____ circuit.

A) series
B) parallel
C) RC
D) RL
سؤال
In resonant circuits, at a certain frequency, the reactance of the coil is equal to the reactance of the capacitor, and the combined reactance is zero.
سؤال
____ is a factor affecting the amount of current flowing in a pure resistive circuit.

A) DC resistance
B) Inductance effect
C) Skin stress
D) Applied voltage
سؤال
Resistive heating units and incandescent lighting are considered to be pure resistive loads.
سؤال
A resonant circuit contains resistance, inductance, and ____.

A) stress
B) hysteresis
C) capacitance
D) reactance
سؤال
The nameplate information on a piece of electrical equipment includes the rating in kilovolt-amperes or kilowatts, voltage, amperes, and ____.

A) static charge
B) place of manufacture
C) frequency
D) resistance
سؤال
Maintaining a(n) ____ power factor provides a more efficient operation.

A) low
B) high
C) zero
D) negative
سؤال
____ are often more practical for power factor improvement than capacitors are because they can drive a mechanical load as well as develop a leading power factor.

A) Synchronous motors
B) Induction motors
C) Feeder conductors
D) Transformers
سؤال
The true power is also called effective power because it has a direct effect on the load.
سؤال
For parallel AC circuits, at any instant, the current is the same value across all branches of a parallel AC circuit, and is equal to the supply current at that instant.
سؤال
The combined resistance of an AC series circuit is equal to the ____ of the individual resistances of the circuit.

A) sum
B) difference
C) product
D) ratio
سؤال
When a circuit contains inductive components, these components contain both resistance and inductive ____.

A) resistance
B) reactance
C) stress
D) frequency
سؤال
An RL parallel circuit is a circuit with branches containing resistance and ____.

A) capacitance
B) hysteresis
C) voltage
D) inductance
سؤال
To solve RLC parallel circuits, the RL portion is usually solved first, and then the LC or RC portion is considered.
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ملء الشاشة (f)
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Deck 8: Ac Circuits
1
____ are caused by voltages induced into the conductors and other surrounding metal parts.

A) Hysteresis currents
B) Skin currents
C) Dielectric currents
D) Eddy currents
D
2
Most circuits contain more than pure resistance, pure inductance, or pure capacitance; therefore, each path of a parallel circuit must be treated as a separate ____ circuit.

A) series
B) parallel
C) RC
D) RL
A
3
In resonant circuits, at a certain frequency, the reactance of the coil is equal to the reactance of the capacitor, and the combined reactance is zero.
True
4
____ is a factor affecting the amount of current flowing in a pure resistive circuit.

A) DC resistance
B) Inductance effect
C) Skin stress
D) Applied voltage
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k this deck
5
Resistive heating units and incandescent lighting are considered to be pure resistive loads.
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افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
فتح الحزمة
k this deck
6
A resonant circuit contains resistance, inductance, and ____.

A) stress
B) hysteresis
C) capacitance
D) reactance
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افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
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7
The nameplate information on a piece of electrical equipment includes the rating in kilovolt-amperes or kilowatts, voltage, amperes, and ____.

A) static charge
B) place of manufacture
C) frequency
D) resistance
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افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
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k this deck
8
Maintaining a(n) ____ power factor provides a more efficient operation.

A) low
B) high
C) zero
D) negative
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
فتح الحزمة
k this deck
9
____ are often more practical for power factor improvement than capacitors are because they can drive a mechanical load as well as develop a leading power factor.

A) Synchronous motors
B) Induction motors
C) Feeder conductors
D) Transformers
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افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
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k this deck
10
The true power is also called effective power because it has a direct effect on the load.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
فتح الحزمة
k this deck
11
For parallel AC circuits, at any instant, the current is the same value across all branches of a parallel AC circuit, and is equal to the supply current at that instant.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
فتح الحزمة
k this deck
12
The combined resistance of an AC series circuit is equal to the ____ of the individual resistances of the circuit.

A) sum
B) difference
C) product
D) ratio
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
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k this deck
13
When a circuit contains inductive components, these components contain both resistance and inductive ____.

A) resistance
B) reactance
C) stress
D) frequency
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افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
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14
An RL parallel circuit is a circuit with branches containing resistance and ____.

A) capacitance
B) hysteresis
C) voltage
D) inductance
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افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
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15
To solve RLC parallel circuits, the RL portion is usually solved first, and then the LC or RC portion is considered.
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افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.
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k this deck
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فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 15 في هذه المجموعة.