What is electromechanical relay?

Q.  In an electromechanical relay, the necessity of connecting an external base resistance arises only _________
- Published on 12 Nov 15

a. in the presence of an internal pull-up resistor
b. in the absence of an internal pull-up resistor
c. in the absence of an internal push-up resistor
d. in the presence of an internal push-up resistor

ANSWER: in the absence of an internal pull-up resistor

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