Q.1

The ________ are two types of acceleration transducers.

  • LVDT and the piezoelectric
  • magnetic and the piezoelectric
  • RTD and the magnetic
  • LVDT and the RTD
Q.2

RTDs, strain gauges, and pressure transducers are _____ devices.

  • resistive
  • inductive
  • capacitive
  • solid-state
Q.3

What is the zero-voltage switch used for?

  • To reduce radiation of high frequencies during turn-on of a high current to a load
  • To control low-voltage circuits
  • To provide power to a circuit when power is lost
  • For extremely low-voltage applications
Q.4

Temperature sensing can be achieved by the use of

  • thermocouples
  • RTDs
  • thermistors
  • All of the above
Q.5

RTDs are typically connected with other fixed resistors

  • in a pi configuration
  • in a bridge configuration
  • and variable resistors
  • and capacitors in a filter-type circuit
Q.6

What device is similar to an RTD but has a negative temperature coefficient?

  • Strain gauge
  • Thermistor
  • Negative-type RTD
  • Thermocouple
Q.7

The purpose of compensation for a thermocouple is

  • to decrease temperature sensitivity
  • to increase voltage output
  • to cancel unwanted voltage output of a thermocouple
  • used for high-temperature circuits
Q.8

Holding current for an SCR is best described as

  • the minimum current required for turn-off
  • the current required before an SCR will turn on
  • the amount of current required to maintain conduction
  • the gate current required to maintain conduction
Q.9

What is the moving part of a linear variable differential transformer?

  • Primary
  • Secondary
  • Diaphragm
  • Core
Q.10

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
Q.11

The change in value of an analog signal during the conversion process produces what is called the

  • quantization error
  • resolution error
  • Nyquist error
  • sampling error
Q.12

Which of the following performance specifications applies to a sample-and-hold circuit?

  • Aperture time
  • Aperture droop
  • Feedback
  • Acquisition jitter
Q.13

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
Q.14

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
Q.15

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
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