A Schmitt trigger switching threshold for a positive-going input signal is at a __________ voltage than for a negative-going signal.
A. lesser
B. greater
Answer: B
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Technician A says that when performing a J1667 opacity test, the exhaust stack diameter must be correctly entered into the opacitymeter instrument or the results will not be meaningful. Technician B says that the ambient temperature must exceed 35 degrees Fahrenheit (2 degrees Celsius) before a valid J1667 opacity test is undertaken. Who is right?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
The two most common types of temperature sensing devices that provide input to an analog temperature transmitter are the _____
A) TC and PV B) DP and PV C) PV and RTD D) TC and RTD
The integrated approach involves practitioners working together to predict, control, identify, and correct safety and health problems.