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Then a brain teaser about 3 light bulbs in a room, each bulb is connected to one switch outside the room. Each switch is connected to only one bulb. If you are outside the room and can do anything to the switches but can only go in the room once to see the bulbs, how can you figure out which bulb is attached to which switch?
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Hardware Engineer

Interviewed at Microsoft

4★
Oct 22, 2012

Then a brain teaser about 3 light bulbs in a room, each bulb is connected to one switch outside the room. Each switch is connected to only one bulb. If you are outside the room and can do anything to the switches but can only go in the room once to see the bulbs, how can you figure out which bulb is attached to which switch?

no difficult question. actually basic questions came like low pass high pass filters, impulse response of some different signals to different simple circuits.. flip flops and opamps.. circuit theory as well as EMC EMI related questions.
avatar

Senior Hardware Engineer

Interviewed at Microsoft

4★
Jun 19, 2013

no difficult question. actually basic questions came like low pass high pass filters, impulse response of some different signals to different simple circuits.. flip flops and opamps.. circuit theory as well as EMC EMI related questions.

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