Electrical Engineering

The purpose of the filler material in a cartridge fuse is to suppress the arc when the fuse blows.

The purpose of the filler material in a cartridge fuse is to suppress the arc when the fuse blows.

The purpose of the filler material in a cartridge fuse is to suppress the arc when the fuse blows.

▸ true

▸ false

nevermind11111   28   1 Reply

Moh1995abdel

The glass front of a blown plug fuse is examined and found to be clean and clear. This indicates ...

The glass front of a blown plug fuse is examined and found to be clean and clear. This indicates ...

The glass front of a blown plug fuse is examined and found to be clean and clear. This indicates that the fuse was most likely blown due to a high current short circuit.

▸ true

▸ false

Jimmyhighroller   36   1 Reply

kyuhalee1

The continuous-current rating of a fuse or circuit breaker is always much greater than its ...

The continuous-current rating of a fuse or circuit breaker is always much greater than its ...

The continuous-current rating of a fuse or circuit breaker is always much greater than its interrupting-current rating.

▸ true

▸ false

NNF1024   21   1 Reply

lucypierce86

Overloads normally range from one to six times the normal current levels.

Overloads normally range from one to six times the normal current levels.

Overloads normally range from one to six times the normal current levels.

▸ true

▸ false

anymous   19   1 Reply

Jehanzaib

High-voltage fuses are classified as those rated for over 600 volts.

High-voltage fuses are classified as those rated for over 600 volts.

High-voltage fuses are classified as those rated for over 600 volts.

▸ true

▸ false

omaralnatour   38   1 Reply

otis24

Current-limiting fuses operate slower than non-current-limiting types.

Current-limiting fuses operate slower than non-current-limiting types.

Current-limiting fuses operate slower than non-current-limiting types.

▸ true

▸ false

aznmistyblue   35   1 Reply

uhpikapp64

Circuit breakers are not reusable after they interrupt current flow.

Circuit breakers are not reusable after they interrupt current flow.

Circuit breakers are not reusable after they interrupt current flow.

▸ true

▸ false

ssi15   34   1 Reply

packar11

A bolted short circuit refers to a short circuit where the main power supply line conductors become ...

A bolted short circuit refers to a short circuit where the main power supply line conductors become ...

A bolted short circuit refers to a short circuit where the main power supply line conductors become solidly connected together.

▸ true

▸ false

lpn27   33   1 Reply

PWT82

When excessive current flows through the bimetallic strip of a circuit breaker, it ________ to ...

When excessive current flows through the bimetallic strip of a circuit breaker, it ________ to ...

When excessive current flows through the bimetallic strip of a circuit breaker, it ________ to release the trip level and open the breaker's contact.  

▸ melts

▸ bends

▸ magnetizes

▸ de-magnetizes

mitch44   29   1 Reply

nguyenphuc1990

To reset a circuit breaker that has tripped and moved to some intermediate position, you must:

To reset a circuit breaker that has tripped and moved to some intermediate position, you must:

[html]To reset a circuit breaker that has tripped and moved to some intermediate position, you must:  

▸ move the handle all the way to the full OFF position and then to the ON position.

▸ move the handle directly to the full ON po

freezo1994   30   1 Reply

channy40

The fuse clip shown is designed to accept only ________ fuses.Courtesy of Cooper Bussmann

The fuse clip shown is designed to accept only ________ fuses.Courtesy of Cooper Bussmann

[html]The fuse clip shown is designed to accept only ________ fuses.

Yukinara   20   1 Reply

kingqadri

The circuit breaker shown would be classified as a(n) ________ type.Mitsubishi Electric

The circuit breaker shown would be classified as a(n) ________ type.Mitsubishi Electric

[html]The circuit breaker shown would be classified as a(n) ________ type.

lollie614   28   1 Reply

Boba155

If a circuit breaker is in a very cold environment it will require ________ to trip than it will in ...

If a circuit breaker is in a very cold environment it will require ________ to trip than it will in ...

[html]If a circuit breaker is in a very cold environment it will require ________ to trip than it will in hot environment.

▸ less current and a longer time

▸ more current and less time

▸ more current and a longer time

thatguy67   27   1 Reply

patriciakim08

For the selective coordination system shown, the short circuit should cause circuit breaker(s) ...

For the selective coordination system shown, the short circuit should cause circuit breaker(s) ...

[html]For the selective coordination system shown, the short circuit should cause circuit breaker(s) ________ to open.

rolotony   30   1 Reply

hfrankos

Damaging short circuit forces appear in the form of

Damaging short circuit forces appear in the form of

Damaging short circuit forces appear in the form of

▸ heat.

▸ magnetic forces.

▸ chemical reaction.

▸ both heat and magnetic forces.

steveberrings   26   1 Reply

navgil

A voltmeter is used to check a pair of fuses in a disconnected switch. A blown fuse is indicated when:

A voltmeter is used to check a pair of fuses in a disconnected switch. A blown fuse is indicated when:

[html]A voltmeter is used to check a pair of fuses in a disconnected switch. A blown fuse is indicated when:

▸ the voltage reading is normal on the line side of the switch and zero on the load side.

▸ the voltage reading is zero o

primewire   27   1 Reply

Dark_Shadow

A short circuit completed directly across the voltage source:

A short circuit completed directly across the voltage source:

[html]A short circuit completed directly across the voltage source:

▸ can melt wires instantly.

▸ usually draws a much higher current than an overloaded circuit.

▸ can produce hundreds of amperes.

▸ All of the answ

npdtan92   28   1 Reply

localbabe10

A fuse rated for 250 V cannot be used on a ________ circuit.

A fuse rated for 250 V cannot be used on a ________ circuit.

A fuse rated for 250 V cannot be used on a ________ circuit.

▸ 12 V

▸ 120 V

▸ 600 V

▸ All of the answers are correct.

anonkah   42   1 Reply

uhpikapp64

________ fuses provide protection from both overloads and short circuits.

________ fuses provide protection from both overloads and short circuits.

________ fuses provide protection from both overloads and short circuits.

▸ Plug

▸ Cartridge

▸ Knife-blade

▸ Dual-element

jack103106   32   1 Reply

avi420

Thermoplastic type THW insulation is both weatherproof and heat resistant.

Thermoplastic type THW insulation is both weatherproof and heat resistant.

Thermoplastic type THW insulation is both weatherproof and heat resistant.

▸ true

▸ false

partygirl4u59   41   1 Reply

jchang19

The voltage drop or loss between the voltage source and the connected load is caused by conductor ...

The voltage drop or loss between the voltage source and the connected load is caused by conductor ...

The voltage drop or loss between the voltage source and the connected load is caused by conductor resistance.

▸ true

▸ false

jack103106   33   1 Reply

ydnam23

The resistance of the power source line conductors is normally high when compared to that of the load.

The resistance of the power source line conductors is normally high when compared to that of the load.

The resistance of the power source line conductors is normally high when compared to that of the load.

▸ true

▸ false

mrtrombley92   30   1 Reply

wonton1

The resistance of a conductor decreases as its length increases.

The resistance of a conductor decreases as its length increases.

The resistance of a conductor decreases as its length increases.

▸ true

▸ false

mhbtelc   35   1 Reply

Keleko12

The mil is a unit of measure for area.

The mil is a unit of measure for area.

 The mil is a unit of measure for area.

▸ true

▸ false

rsteel   45   1 Reply

Ama1911

The external diameter of wire, including its insulation, determines the gauge size.

The external diameter of wire, including its insulation, determines the gauge size.

 The external diameter of wire, including its insulation, determines the gauge size.

▸ true

▸ false

Kiyaa   29   1 Reply

ahgoebel

Resistance creates heat in a conductor when current flows through it.

Resistance creates heat in a conductor when current flows through it.

Resistance creates heat in a conductor when current flows through it.

▸ true

▸ false

Chocolate_Pie   37   1 Reply

parrothead

NEC voltage drop considerations are only recommendations; compliance is optional.

NEC voltage drop considerations are only recommendations; compliance is optional.

 NEC voltage drop considerations are only recommendations; compliance is optional.

▸ true

▸ false

anymous   32   1 Reply

dioxy186

Line voltage drop refers to the sum of the source voltage and load voltage.

Line voltage drop refers to the sum of the source voltage and load voltage.

Line voltage drop refers to the sum of the source voltage and load voltage.

▸ true

▸ false

mdensmore   33   1 Reply

crusherpsg

If the safe current-carrying capacity of a conductor is exceeded, the conductor can become overheated.

If the safe current-carrying capacity of a conductor is exceeded, the conductor can become overheated.

If the safe current-carrying capacity of a conductor is exceeded, the conductor can become overheated.

▸ true

▸ false

schweet   47   1 Reply

ecunis1

A conductor with more of a heat-resistant insulation will have a higher ampacity rating than one of ...

A conductor with more of a heat-resistant insulation will have a higher ampacity rating than one of ...

A conductor with more of a heat-resistant insulation will have a higher ampacity rating than one of equivalent size with a lower-insulation temperature rating.

▸ true

▸ false

luannamw86   35   1 Reply

Mspractical

Which of the following must be taken into account when selecting conductor insulation?

Which of the following must be taken into account when selecting conductor insulation?

[html]Which of the following must be taken into account when selecting conductor insulation?

▸ circuit voltages

▸ surrounding temperature conditions

▸ conductor flexibility

▸ All of the answers are correct.[/ht

Godty   43   1 Reply

Moh1995abdel

Unless otherwise specified, all conductors referenced in the NEC are considered to be

Unless otherwise specified, all conductors referenced in the NEC are considered to be

Unless otherwise specified, all conductors referenced in the NEC are considered to be

▸ silver.

▸ copper.

▸ platinum.

▸ aluminum.

Student06   34   1 Reply

jtarinay

The type of cable shown is

The type of cable shown is

[html]The type of cable shown is

inkster   32   1 Reply

allegri87

The single-phase voltage at the source and load of an operating branch circuit installation is ...

The single-phase voltage at the source and load of an operating branch circuit installation is ...

[html]The single-phase voltage at the source and load of an operating branch circuit installation is measured and found to be 240 V and 233 V, respectively. The amount of the voltage drop would be

▸ 3 V.

▸ 4 V.

▸ 5 V.

rsteel   32   1 Reply

ikidding

The resistance of 1,000 feet of 14 AWG standard annealed copper wire is listed in a wire table as ...

The resistance of 1,000 feet of 14 AWG standard annealed copper wire is listed in a wire table as ...

[html]The resistance of 1,000 feet of 14 AWG standard annealed copper wire is listed in a wire table as 2.525 ohms at 20°C. The resistance of 250 feet of this wire would be  

▸ 0.563 Ω.

▸ 0.631 Ω.

▸ 0.677 Ω.

▸ 0.932

ttools   35   1 Reply

navgil

The resistance between the two ends of a length of 14 AWG copper wire (cross-sectional area of 4,109 ...

The resistance between the two ends of a length of 14 AWG copper wire (cross-sectional area of 4,109 ...

[html]The resistance between the two ends of a length of 14 AWG copper wire (cross-sectional area of 4,109 cmils) is measured and found to be 0.4 ohm. Using a K of 12.9, calculate the approximate length of the wire.  

▸ 280 feet

▸

apple321   41   1 Reply

psstone42

The numbers used to identify wire diameter and ampacity are ________ related to AWG sizes.

The numbers used to identify wire diameter and ampacity are ________ related to AWG sizes.

The numbers used to identify wire diameter and ampacity are ________ related to AWG sizes.

▸ directly

▸ inversely

▸ somewhat

▸ are not

briemert2013   39   1 Reply

ftricey04

The NEC recommends limiting the voltage drop on branch circuit conductors to a maximum of

The NEC recommends limiting the voltage drop on branch circuit conductors to a maximum of

The NEC recommends limiting the voltage drop on branch circuit conductors to a maximum of  

▸ 6 percent.

▸ 5 percent.

▸ 4 percent.

▸ 3 percent.

annyan   33   1 Reply

ochie92

The largest wire size that uses the AWG values is

The largest wire size that uses the AWG values is

The largest wire size that uses the AWG values is  

▸ 4/0.

▸ 8/0.

▸ 0/0.

▸ There is no limit.

texasmade2550   35   1 Reply

chanelfargesen

The ampacity of a conductor is determined by its:

The ampacity of a conductor is determined by its:

The ampacity of a conductor is determined by its:

▸ material.

▸ AWG wire size.

▸ type of insulation.

▸ All of the answers are correct.

yosie   31   1 Reply

shanelljac204