PDH Quiz – Practical Temp Measurements

1.	What does RTD stand for?
		Resistance Temperature Detector
		Resistor Temperature Detector
		Real Temperature Detector
		None of the above
2.	_________ is an A/D technique which essentially averages noise over a full line cycle, thus power line-related noise and its harmonics are virtually eliminated.
		Tree switching
		Filtration
		Integration
		Thermal shunting
3.	__________ is a method of organizing the channels of a scanner into groups, each with its own main switch.
		Thermal shunting
		Tree switching
		Decalibration
		Galvanic action
4.	____________ describes the process of unintentionally altering the physical makeup of the thermocouple wire so that it no longer conforms to the NIST polynomial within specified limits.
		Thermal Shunting
		Decalibration
		Galvanic Action
		None of the above
5.	The integrity of a thermocouple system may be improved by following these precautions ________?
		Avoid steep temperature gradients
		Use isolated inputs with ample offset capability
		Avoid mechanical stress and vibration, which could strain the wires
		All of the above
6.	All metals produce a positive change in resistance for a positive change in temperature. This, of course, is the main function of an RTD.
		True
		False
7.	In the following figure what is temperature coefficient?
		β
		α
		δ
		None of the above
8.	_____________ is the act of altering the measurement temperature by inserting a measurement transducer.
		Thermal shunting
		Decalibration
		Self Heating
		None of the above
9.	Thermistors are more susceptible to permanent decalibration at high temperatures than are RTD’s or thermocouples.
		True
		False
10.	The following figure explains which law?
		The law of inserted metals
		The law of interior temperatures
		The law of intermediate metals
		None of the above

Practical Temperature Measurements

Quiz Questions