Question 1

The most commonplace use for inductors in electronics:

Accepted Answer

A) blocks DC voltages. 
B) blocks AC voltages. 
C) passes DC voltages. 
D) passes AC voltages. 
A) blocks DC voltages. 
B) blocks AC voltages. 
C) passes DC voltages. 
D) passes AC voltages. B

Question 2

An 0.05 µH inductance is larger than a _.

Accepted Answer

A) 0.000005 H inductance 
B) 0.00005 H inductance 
C) 0.0000005 H inductance 
D) 0.000000008 H inductance 
A) 0.000005 H inductance 
B) 0.00005 H inductance 
C) 0.0000005 H inductance 
D) 0.000000008 H inductance D

Question 3

The ripple voltage as measured at the output of a power supply has increased. Which of the following could be the problem?

Accepted Answer

A) load resistance has dropped 
B) partial shorting of the windings of the filtering coil 
C) resistance of the coil has decreased 
D) either A or B 
A) load resistance has dropped 
B) partial shorting of the windings of the filtering coil 
C) resistance of the coil has decreased 
D) either A or B D

Question 4

If a 50 mH inductor is in series with a 50 kΩ resistor across a 50 VDC source, what is the maximum current that will flow in the circuit?

Accepted Answer

A) 10 mA 
B) 1 µA 
C) 1 mA 
D) 100 µA 
A) 10 mA 
B) 1 µA 
C) 1 mA 
D) 100 µA

Question 5

An inductor is placed in series with the load for power supply filtering.

Accepted Answer

A) True 
 B)False

Question 6

What is the total inductance of a 40 mH inductor and a 24 mH inductor connected in parallel?

Accepted Answer

A) 32 mH 
B) 150 mH 
C) 64 mH 
D) 15 mH 
A) 32 mH 
B) 150 mH 
C) 64 mH 
D) 15 mH

Question 7

What is the inductive reactance of a 150 mH inductor operating at 10 kHz?

Accepted Answer

A) 6280 Ω 
B) 9420 Ω 
C) 8450 Ω 
D) 1500 Ω 
A) 6280 Ω 
B) 9420 Ω 
C) 8450 Ω 
D) 1500 Ω

Question 8

If a 1 mH, 3.3 mH, and 0.1 mH inductor are connected in parallel, LT equals .

Accepted Answer

A) less than 0.1 mH 
B) 5.3 mH 
C) 4.4 mH 
D) greater than 3.3 mH 
A) less than 0.1 mH 
B) 5.3 mH 
C) 4.4 mH 
D) greater than 3.3 mH

Question 9

An inductor can be simulated using resistors, capacitors, and operational amplifiers. Ths circuit is called a _ _.

Accepted Answer

A) oscillator 
B) gyrator 
C) modulator 
D) inducer 
A) oscillator 
B) gyrator 
C) modulator 
D) inducer

Question 10

If an inductor, resistor and switch are connected in series to a 12 V battery, what is the magnitude of the inductor's voltage at the instant that the switch is closed?

Accepted Answer

A) 4 V 
B) 0 V 
C) 6 V 
D) 12 V 
A) 4 V 
B) 0 V 
C) 6 V 
D) 12 V

Question 11

If an inductor carries 150 mADC of current when connected across a 65 VDC source, what is its resistance?

Accepted Answer

A) 30 Ω 
B) 26.7 Ω 
C) 433 Ω 
D) 65 Ω 
A) 30 Ω 
B) 26.7 Ω 
C) 433 Ω 
D) 65 Ω

Question 12

Inductors can radiate electromagnetic energy to other components in a system.

Accepted Answer

A) True 
 B)False

Question 13

Inductive reactance decreases as frequency increases.

Accepted Answer

A) True 
 B)False

Question 14

Do iron -core inductors or air -core inductors generally have the larger inductance?

Accepted Answer

A) neither; iron -core inductors and air -core inductors have the same inductance 
B) iron core 
C) air core 
D) There is no way to tell. 
A) neither; iron -core inductors and air -core inductors have the same inductance 
B) iron core 
C) air core 
D) There is no way to tell.

Question 15

What is the inductive reactance of a 0.2 mH inductor operating at 1 kHz?

Accepted Answer

A) 1.26 Ω 
B) 1.26 kΩ 
C) 126 kΩ 
D) 126 Ω 
A) 1.26 Ω 
B) 1.26 kΩ 
C) 126 kΩ 
D) 126 Ω

Question 16

An inductor passes direct current and opposes alternating current.

Accepted Answer

A) True 
 B)False

Question 17

Connecting a inductance. inductor in
With a 100 m H inductor produces a 65 m H

Accepted Answer

A) 35 mH, series 
B) 186 mH, series 
C) 35 mH, parallel 
D) 186 mH, parallel 
A) 35 mH, series 
B) 186 mH, series 
C) 35 mH, parallel 
D) 186 mH, parallel

Question 18

The quality factor for an inductor becomes more apparent at higher frequencies.

Accepted Answer

A) True 
 B)False

Question 19

In an inductive circuit, the lags the .

Accepted Answer

A) voltage, reactance 
B) current, resistance 
C) voltage, resistance 
D) current, voltage 
A) voltage, reactance 
B) current, resistance 
C) voltage, resistance 
D) current, voltage

Question 20

If two 2.5 mH inductors are connected in series with a 4.7 kΩ resistor and the source voltage is 100 VDC, what is the circuit's maximum current?

Accepted Answer

A) 1.1 mA 
B) 21.3 mA 
C) 63.2 mA 
D) 7.9 mA 
A) 1.1 mA 
B) 21.3 mA 
C) 63.2 mA 
D) 7.9 mA

The most commonplace use for inductors in electronics:

An 0.05 µH inductance is larger than a _.

The ripple voltage as measured at the output of a power supply has increased. Which of the following could be the problem?

If a 50 mH inductor is in series with a 50 kΩ resistor across a 50 VDC source, what is the maximum current that will flow in the circuit?

An inductor is placed in series with the load for power supply filtering.

What is the total inductance of a 40 mH inductor and a 24 mH inductor connected in parallel?

What is the inductive reactance of a 150 mH inductor operating at 10 kHz?

If a 1 mH, 3.3 mH, and 0.1 mH inductor are connected in parallel, LT equals .

An inductor can be simulated using resistors, capacitors, and operational amplifiers. Ths circuit is called a _ _.

If an inductor, resistor and switch are connected in series to a 12 V battery, what is the magnitude of the inductor's voltage at the instant that the switch is closed?

If an inductor carries 150 mADC of current when connected across a 65 VDC source, what is its resistance?

Inductors can radiate electromagnetic energy to other components in a system.

Inductive reactance decreases as frequency increases.

Do iron -core inductors or air -core inductors generally have the larger inductance?

What is the inductive reactance of a 0.2 mH inductor operating at 1 kHz?

An inductor passes direct current and opposes alternating current.

Connecting a inductance. inductor in With a 100 m H inductor produces a 65 m H

The quality factor for an inductor becomes more apparent at higher frequencies.

In an inductive circuit, the lags the .

If two 2.5 mH inductors are connected in series with a 4.7 kΩ resistor and the source voltage is 100 VDC, what is the circuit's maximum current?

Systems, Quantities, and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rccircuits

Rlcircuits

Rlccircuits and Resonance

Transformers

Time Response of Reactive Circuits

Filters

Exam 11: Inductors

The most commonplace use for inductors in electronics:

An 0.05 µH inductance is larger than a _.

The ripple voltage as measured at the output of a power supply has increased. Which of the following could be the problem?

If a 50 mH inductor is in series with a 50 kΩ resistor across a 50 VDC source, what is the maximum current that will flow in the circuit?

An inductor is placed in series with the load for power supply filtering.

What is the total inductance of a 40 mH inductor and a 24 mH inductor connected in parallel?

What is the inductive reactance of a 150 mH inductor operating at 10 kHz?

If a 1 mH, 3.3 mH, and 0.1 mH inductor are connected in parallel, LT equals .

An inductor can be simulated using resistors, capacitors, and operational amplifiers. Ths circuit is called a _ _.

If an inductor, resistor and switch are connected in series to a 12 V battery, what is the magnitude of the inductor's voltage at the instant that the switch is closed?

If an inductor carries 150 mADC of current when connected across a 65 VDC source, what is its resistance?

Inductors can radiate electromagnetic energy to other components in a system.

Inductive reactance decreases as frequency increases.

Do iron -core inductors or air -core inductors generally have the larger inductance?

What is the inductive reactance of a 0.2 mH inductor operating at 1 kHz?

An inductor passes direct current and opposes alternating current.

Connecting a inductance. inductor in With a 100 m H inductor produces a 65 m H

The quality factor for an inductor becomes more apparent at higher frequencies.

In an inductive circuit, the lags the .

If two 2.5 mH inductors are connected in series with a 4.7 kΩ resistor and the source voltage is 100 VDC, what is the circuit's maximum current?

Systems, Quantities, and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rccircuits

Rlcircuits

Rlccircuits and Resonance

Transformers

Time Response of Reactive Circuits

Filters