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Voltage and Current

Q1: Switches are either on or off, but can have multiple poles.

A True

B False

ANS:A - True

Different types of switches:

SPST - SINGLE POLE SINGLE THROW
SPDT - Single pole, double throw
SPCO - Single pole changeover or Single pole, centre off or
SPTT - Single Pole, Triple Throw
DPST - Double pole, single throw
DPDT - Double pole, double throw
DPCO - Double pole changeover or Double pole, centre off



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