1. A discrete 120 V ac output module is to be used to control a 230 V dc solenoi
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Question
1. A discrete 120 V ac output module is to be used to control a 230 V dc solenoid valve. Draw a diagram showing how this could be accomplished using an interposing relay.
2. Assume a thermocouple generates a linear voltage of from 20 mV to 50 mV when the temperature changes from 750
A discrete 120 V ac output module is to be used to control a 230 V dc solenoid valve. Draw a diagram showing how this could be accomplished using an interposing relay. Assume a thermocouple generates a linear voltage of from 20 mV to 50 mV when the temperature changes from 750 degree F to 1250 degree F. How much voltage will be generated when the temperature of the thermocouple is at 1000 Degree F? Assume the triac of an ac output module fails in the shorted state. How would this affect the device connected to this output?Explanation / Answer
If the triac of an ac output module fails in the shorted state, the device connected to the output would behave the same as if it had been connected directly to the ac power supply. It would run at full power and it would not be controllable
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