basic elec final exam | 暗記メーカー

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basic elec final exam

13問 • 2年前

問題一覧

1

is an electric / electronic or mechanical device, which is used to protect circuits from over current, overload and ensure the protection of the circuit.

Fuse

2

A general Fuse consists of a low resistance

Metallic Wire

3

is the amount of current which a fuse can easily conduct without interrupting the circuit.

Current Carrying Capacity

4

The value of maximum current that can safely be interrupted by the Fuse is called Breaking Capacity and should be higher than the prospective short circuit current.

Breaking Capacity

5

contain a metallic wire, which burns out, when an over current, over load or mismatched load connect event occurs, the user has to manually replace these fuses, switch fuses are cheap and widely used in almost all the electronics and electrical systems.

One Time Use Fuses

6

automatically reset after the operation when fault occurs at the system.

Resettable Fuse

7

In a DC system, when the metallic wire melts because of the heat generated by the over current, then Arc is oduced and it is very difficult to extinguish this arc because of DC constant value.

DC Fuses

8

In the AC system, voltage with 60Hz or 50Hz frequency changes its amplitude from zero to 60 times every second, so arc can be extinct easily as compared to DC.

AC Fuses

9

are used to protect electrical appliances such as motors, air-conditions, refrigerator, pumps etc. where high voltage rating and currents are required.

Cartridge Fuses

10

contains an adapter ring, base, cap and cartridge. Fuse base is connected to the fuse cap where the cartridge is inside the fuse cap.

D-Types Fuse

11

are used in power systems to protect the power transformer, distribution transformers and instrument transformer etc.

High Voltage

12

are chip types of fuses (also known as electronic fuse) are used in DC powe applications like Hard Drive, DVD players, Camera, cell phones etc where space playing an important role because SMD fuses are very tinny in size and hard to replace as well.

Surface Mount Fuse

13

is a device, which can be used multiple times without replacing it.

Resettable Fuses

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50問 • 2年前

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23問 • 1年前

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Nillo Jb · 20問 · 1年前

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20問 • 1年前

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問題一覧

1

is an electric / electronic or mechanical device, which is used to protect circuits from over current, overload and ensure the protection of the circuit.

Fuse

2

A general Fuse consists of a low resistance

Metallic Wire

3

is the amount of current which a fuse can easily conduct without interrupting the circuit.

Current Carrying Capacity

4

The value of maximum current that can safely be interrupted by the Fuse is called Breaking Capacity and should be higher than the prospective short circuit current.

Breaking Capacity

5

contain a metallic wire, which burns out, when an over current, over load or mismatched load connect event occurs, the user has to manually replace these fuses, switch fuses are cheap and widely used in almost all the electronics and electrical systems.

One Time Use Fuses

6

automatically reset after the operation when fault occurs at the system.

Resettable Fuse

7

In a DC system, when the metallic wire melts because of the heat generated by the over current, then Arc is oduced and it is very difficult to extinguish this arc because of DC constant value.

DC Fuses

8

In the AC system, voltage with 60Hz or 50Hz frequency changes its amplitude from zero to 60 times every second, so arc can be extinct easily as compared to DC.

AC Fuses

9

are used to protect electrical appliances such as motors, air-conditions, refrigerator, pumps etc. where high voltage rating and currents are required.

Cartridge Fuses

10

contains an adapter ring, base, cap and cartridge. Fuse base is connected to the fuse cap where the cartridge is inside the fuse cap.

D-Types Fuse

11

are used in power systems to protect the power transformer, distribution transformers and instrument transformer etc.

High Voltage

12

are chip types of fuses (also known as electronic fuse) are used in DC powe applications like Hard Drive, DVD players, Camera, cell phones etc where space playing an important role because SMD fuses are very tinny in size and hard to replace as well.

Surface Mount Fuse

13

is a device, which can be used multiple times without replacing it.

Resettable Fuses