Question 1

____ 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.

Accepted Answer

A)   Synchronous motors
B)   Induction motors
C)   Feeder conductors
D)   TransformersE) A) and D)
F) None of the above A

Question 2

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.

Accepted Answer

A) True 
 B)False

Question 3

____ is a factor affecting the amount of current flowing in a pure resistive circuit?

Accepted Answer

A)   DC resistance
B)   inductance effect
C)   skin stress
D)   hysteresis currentsE) None of the above
F) C) and D)

Question 4

An RL parallel circuit is a circuit with branches containing resistance and ____.

Accepted Answer

A)   capacitance
B)   hysteresis
C)   voltage
D)   inductanceE) B) and C)
F) C) and D) D

Question 5

When a circuit contains inductive components, these components contain both resistance and inductive ____.

Accepted Answer

A)   resistance
B)   reactance
C)   stress
D)   frequencyE) B) and D)
F) A) and B)

Question 6

Resistive heating units and incandescent lighting are considered to be pure resistive loads.

Accepted Answer

A) True 
 B)False

Question 7

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.

Accepted Answer

A) True 
 B)False

Question 8

The true power is also called effective power.

Accepted Answer

A) True 
 B)False

Question 9

Maintaining a(n)  ____ power factor provides a more efficient operation.

Accepted Answer

A)   low
B)   high
C)   zero
D)   negativeE) A) and B)
F) B) and C)

Question 10

____ are caused by voltages induced into the conductors and other surrounding metal parts.

Accepted Answer

A)   Hysteresis currents
B)   Skin currents
C)   Dielectric currents
D)   Eddy currentsE) A) and D)
F) None of the above

Question 11

The nameplate information on piece of electrical equipment includes the rating in kilovolt-amperes and/or kilowatts, voltage, amperes, and ____.

Accepted Answer

A)   static charge
B)   place of manufacture
C)   frequency
D)   resistanceE) A) and D)
F) All of the above

Question 12

To solve RLC parallel circuits, the RL portion is usually solved first, and then the LC or RC portion is considered.

Accepted Answer

A) True 
 B)False

Question 13

A resonant circuit contains resistance, inductance, and ____.

Accepted Answer

A)   stress
B)   hysteresis
C)   capacitance
D)   reactanceE) B) and D)
F) C) and D) C

Question 14

The combined resistance of an AC series circuit is equal to the ____ of the individual resistances of the circuit.

Accepted Answer

A)   sum
B)   difference
C)   product
D)   ratioE) A) and B)
F) None of the above

Question 15

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.

Accepted Answer

A)   series
B)   parallel
C)   RC
D)   RLE) B) and C)
F) A) and D)

Exam 8: Ac Circuits

____ 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.

Correct Answer
verified
A

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.

Correct Answer
verified

____ is a factor affecting the amount of current flowing in a pure resistive circuit?

Correct Answer
verified

An RL parallel circuit is a circuit with branches containing resistance and ____.

Correct Answer
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D

When a circuit contains inductive components, these components contain both resistance and inductive ____.

Correct Answer
verified

Resistive heating units and incandescent lighting are considered to be pure resistive loads.

Correct Answer
verified

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.

Correct Answer
verified

The true power is also called effective power.

Correct Answer
verified

Maintaining a(n) ____ power factor provides a more efficient operation.

Correct Answer
verified

____ are caused by voltages induced into the conductors and other surrounding metal parts.

Correct Answer
verified

The nameplate information on piece of electrical equipment includes the rating in kilovolt-amperes and/or kilowatts, voltage, amperes, and ____.

Correct Answer
verified

To solve RLC parallel circuits, the RL portion is usually solved first, and then the LC or RC portion is considered.

Correct Answer
verified

A resonant circuit contains resistance, inductance, and ____.

Correct Answer
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C

The combined resistance of an AC series circuit is equal to the ____ of the individual resistances of the circuit.

Correct Answer
verified

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.

Correct Answer
verified

Exam 8: Ac Circuits

____ 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.

Correct AnswerverifiedA

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.

Correct AnswerverifiedShow Answer

____ is a factor affecting the amount of current flowing in a pure resistive circuit?

Correct AnswerverifiedShow Answer

An RL parallel circuit is a circuit with branches containing resistance and ____.

Correct AnswerverifiedD

When a circuit contains inductive components, these components contain both resistance and inductive ____.

Correct AnswerverifiedShow Answer

Resistive heating units and incandescent lighting are considered to be pure resistive loads.

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

The true power is also called effective power.

Correct AnswerverifiedShow Answer

Maintaining a(n) ____ power factor provides a more efficient operation.

Correct AnswerverifiedShow Answer

____ are caused by voltages induced into the conductors and other surrounding metal parts.

Correct AnswerverifiedShow Answer

The nameplate information on piece of electrical equipment includes the rating in kilovolt-amperes and/or kilowatts, voltage, amperes, and ____.

Correct AnswerverifiedShow Answer

To solve RLC parallel circuits, the RL portion is usually solved first, and then the LC or RC portion is considered.

Correct AnswerverifiedShow Answer

A resonant circuit contains resistance, inductance, and ____.

Correct AnswerverifiedC

The combined resistance of an AC series circuit is equal to the ____ of the individual resistances of the circuit.

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

Correct Answer
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A

Correct Answer
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Correct Answer
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D

Correct Answer
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C

Correct Answer
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Correct Answer
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