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Pitted and Welded Contacts

Pitted and Welded Contacts

Assessment

Flashcard

Construction

4th Grade

Practice Problem

Hard

Created by

Stephen Nicoll

FREE Resource

Student preview

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30 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Pitted, Welded Contacts

Back

During the close-to-open (break) transition, a microscopic molten bridge forms and eventually ruptures asymmetrically, transferring contact material between contacts and increasing the surface roughness.

2.

FLASHCARD QUESTION

Front

Coil can be burnt out by over-voltage.

Back

True

3.

FLASHCARD QUESTION

Front

Coil could possibly be burnt out due to under voltage.

Back

True

4.

FLASHCARD QUESTION

Front

Coil issues are due to heat dissipation as a rule.

Back

True

5.

FLASHCARD QUESTION

Front

Coil Testing: Ensure coil voltage matches supply voltage.

Back

Coil Testing: Ensure the voltage of the coil is consistent with the supply voltage.

6.

FLASHCARD QUESTION

Front

Coil Testing: Use only a DC coil with a DC supply.

Back

Coil Testing: Ensure compatibility between the coil type and the power supply type.

7.

FLASHCARD QUESTION

Front

Coil Testing: Test the resistance of the coil.

Back

Coil Testing: Measure the resistance to ensure proper functionality.

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