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Electronics - Measurement, Conversion and Control

Exercise : Measurement, Conversion and Control - General Questions
1.
What device is similar to an RTD but has a negative temperature coefficient?
Strain gauge
Thermistor
Negative-type RTD
Thermocouple
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The resistive change of a strain gauge
is based on the weight placed upon it, but can be many thousands of ohms
is usually no more than 100 omega.gif
is based on the gauge factor, but is typically less than an ohm
has a positive temperature coefficient
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The silicon-controlled rectifier can be turned off
by a negative gate pulse
by forced commutation
with the off switch
when the breakover voltage is exceeded
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
The output voltage of a typical thermocouple is
less than 100 mV
greater than 1 V
Thermocouples vary resistance, not voltage.
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
The connections to a thermocouple
can produce an unwanted thermocouple effect, which must be compensated for
produce an extra desirable thermocouple effect
must be protected, since high voltages are present
produce an extra desirable thermocouple effect and must be protected, since high voltages are present
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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