Electronics And Communication Test Preparations On Measurement, Conversion and Control Part 1
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Test Preparation on Electronics And Communication Test Preparations On Measurement, Conversion and Control Part 1
1.
What device is similar to an RTD but has a negative temperature coefficient?
1
Strain gauge
2
Thermistor
3
Negative-type RTD
4
Thermocouple
2.
The silicon-controlled rectifier can be turned off
1
by a negative gate pulse
2
by forced commutation
3
with the off switch
4
when the breakover voltage is exceeded
3.
The output voltage of a typical thermocouple is
1
less than 100 mV
2
greater than 1 V
3
Thermocouples vary resistance, not voltage.
4
None of the above
4.
The connections to a thermocouple
1
can produce an unwanted thermocouple effect, which must be compensated for
2
produce an extra desirable thermocouple effect
3
must be protected, since high voltages are present
4
produce an extra desirable thermocouple effect and must be protected, since high voltages are present
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