When a pear-shaped buoy float switch is used as the sensing means, ___ (what type of material) is used to establish contact between the long and short electrodes in the glass envelope

Multiple Choice Questions Electrical MCQ
1

When a pear-shaped buoy float switch is used as the sensing means, ________________ (what type of material) is used to establish contact between the long and short electrodes in the glass envelope.

A) lead
B) silver
C) copper
D) mercury

Show Answer

Answer:D

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