340 Basic Electrical Component Circuits Flashcards

1
Q

switch symbols

A
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2
Q

What are two factors that determine the ratings for different load characteristic?

A

1) the surge current at the instant the switch is closed

2) the current-breaking capacity for opening the switch under maximum current

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3
Q

In a DC circuit the voltage is always at a __________.

A

maximum value

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4
Q

________ during contact- make and ________ during contact- break are more ______ in DC circuits.

A

contact welding
contact arcing

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5
Q

A mechanical device used to open and close an electric circuit is called __________.

A

a switch

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6
Q

Each movable contact in a switch is called _______.

A

a pole

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7
Q

Each individual make/beak operation of a switch is called _______.

A

a throw

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8
Q

Switches are generally rated in terms of the ______ across the contacts when the switch is open and the ______ through the switch when its closed.

A

maximum voltage
maximum current

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9
Q

A factor that governs the contact ratings for different load characteristics is the ______ at the instant the switch is closed, often found in a motor circuit

A

surge current

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10
Q
A
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