1- What connection of two or more pushbuttons can be considered to be an AND typ
ID: 586105 • Letter: 1
Question
1- What connection of two or more pushbuttons can be considered to be an AND type of control circuit:
All pushbuttons connected in series.
All pushbuttons connected in parallel.
One pushbutton connected in series with the remaining pushbuttons in parallel.
One pushbutton connected in parallel with the remaining pushbuttons in series.
2-
A control system calls for a light to come on when switch A and either switch B or switch C is closed. State the connection of the switches that will accomplish this.
All three pushbuttons connected in series.
All three pushbuttons connected in parallel
Switches B and C will be connected in series. Switch A will be
connected in parallel with the series combination of B and C.
Switches B and C will be connected in parallel. Switch A will be
connected in series with the parallel combination of B and C.
3-One bulb in a 20 series connected holiday tree lamp set needs to be replaced. If the lamp set is rated for an input voltage of 120 VAC, what voltage rating of bulb would be required?
i want all these please
All pushbuttons connected in series.
All pushbuttons connected in parallel.
One pushbutton connected in series with the remaining pushbuttons in parallel.
One pushbutton connected in parallel with the remaining pushbuttons in series.
Explanation / Answer
1)
For ANS gate
all input should be HIGH (ON) then output will be HIGH.
for this circuit All pushbuttons should be connected in series.
2)
For this control system
Switches B and C will be connected in parallel. Switch A will be connected in series with the parallel combination of B and C
In a series connection, voltage drop at all bulb will be added for total voltage drop
so 120 VAC voltage rating of bulb would be required.
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