It may be for you, but perhaps not to us mortals.Why wouldn't they be expecting a detailed circuit? It's a simple problem that you should be able to solve in less than five minutes.............
If we are at the point when it is unreasonable to expect an applicant for an EE job to be able to come up with something likeIt may be for you, but perhaps not to us mortals.
In the second circuit with relays I believe there needs to be a diode in series with each PB so that power is removed as soon as the first relay closes, avoiding any voltage feedback through the closed PB.Some game show circuits.
ak
I think you are being overly optimistic about the ability of most sophomore's ability, taking a first course in digital logic, native or foreign (although I'm sure you would have had no problem), but I think companies outsource to save money, not because native engineers don't have the ability to do the job.If we are at the point when it is unreasonable to expect an applicant for an EE job to be able to come up with something like
........................
during an interview, then is it any wonder that companies feel the need to outsource engineering jobs to countries where this would be considered something that a sophomore taking a first course in digital logic should be able to do easily on ten-minute pop quiz.
Nope. Relay power comes through the three NC contacts in series. When any relay changes, power to the other coils is broken. Power to the selected relay comes through the NO contact. The circuit is dependent on the relay armature having enough inertia to move from NC to NO without continuous power to the coil. Not my circuit, but points for simplicity.In the second circuit with relays I believe there needs to be a diode in series with each PB so that power is removed as soon as the first relay closes, avoiding any voltage feedback through the closed PB.
For example, if S1 was pushed when S2 was still engaged after being initially pushed, the latch would transfer from the 2nd relay to the 1st.
This what I meant :
View attachment 114461
If expecting a person that has taken a first digital course to be able to design a simple circuit like this that uses an RS FF in a very simple way is being overly optimistic, then please describe the type of problem that such a person should reasonably be able solve when applying for a job.I think you are being overly optimistic about the ability of most sophomore's ability, taking a first course in digital logic, native or foreign (although I'm sure you would have had no problem), but I think companies outsource to save money, not because native engineers don't have the ability to do the job.
crutschow is right. Say button 2 is pressed, the relay switches but button 2 is still pressed. This feeds power from relay 2 coil to the button common, so if now button 1 is pressed then relay 1 will receive power via the two pressed buttons. Realy 1 will operate - oops!Nope. Relay power comes through the three NC contacts in series. When any relay changes, power to the other coils is broken. Power to the selected relay comes through the NO contact. The circuit is dependent on the relay armature having enough inertia to move from NC to NO without continuous power to the coil. Not my circuit, but points for simplicity.
ak
I'm just saying that there are probably only a few people able to put such a circuit together with no experience in a few minutes while under the stress of an interview.If expecting a person that has taken a first digital course to be able to design a simple circuit like this that uses an RS FF in a very simple way is being overly optimistic, then please describe the type of problem that such a person should reasonably be able solve when applying for a job.
So the question still stands -- what IS the hardest question that is reasonable to expect an applicant for an EE position to be able to solve under the conditions of an interview?I'm just saying that there are probably only a few people able to put such a circuit together with no experience in a few minutes while under the stress of an interview.
Of course, I understand that a person with your superior intellect would have no problem under those conditions.
A simple XOR should do the trickHi,
I'v been asked this riddle :
"Three horses are having a race. at the finish line of each lane there is a detector which gives a logical '1' when a horse crosses the line. design a circuit which will let you know which horse won the race"
I have a direction to solve this question but I'm not quite sure It's the best solution or the appropriate one so I would like to hear you suggestions.
My thought was to connect the 3 detectors (at the end of each lane) into the input of a decoder so by the output of the decoder we will know which horse won.
Thanks!
How would that work for three horses.A simple XOR should do the trick
How about a problem like this:So the question still stands -- what IS the hardest question that is reasonable to expect an applicant for an EE position to be able to solve under the conditions of an interview?
Not seeing how that would work. Presumable, in most cases, eventually all three horses will have crossed the finish line in their lane. So given only that information, how can you tell which one crossed first. You are going to need a memory element to capture which horse was first plus a means of ensuring that that information is not corrupted as other horses cross later.A simple XOR should do the trick
Probably.Should it be reasonable to expect a new grad with an EE degree to be able to accomplish this task under the conditions of a job interview?
Sadly, it was apparently unreasonable to expect MIT EE grads to be able to do it on graduation day.Probably.
But you are pushing it.
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