Q.1

Thermocouple connections must be taken into account to ensure a high degree of accuracy.

  • True
  • False
Q.2

The change in value of the analog signal during the sampling process produces what is called the quantization error.

  • True
  • False
Q.3

Pressure transducers are devices that exhibit a change in resistance inversely proportional to a change in pressure.

  • True
  • False
Q.4

A resistance temperature detector produces a voltage for a given change in temperature.

  • True
  • False
Q.5

All triacs operate in __________.

  • quadrant 1 and quadrant 2
  • quadrant 1 and quadrant 3
  • quadrant 2 and quadrant 4
  • quadrant 3 and quadrant 4
Q.6

A triac is different from an SCR because ________.

  • it can handle large current flows
  • it can handle large voltages
  • the gate signal can turn off the current flow
  • it allows current flow in both directions
Q.7

A thermistor's temperature characteristic is essentially _________.

  • linear
  • logarithmic
  • nonlinear
  • geometric
Q.8

A basic sample-and-hold circuit consists of an analog switch, a capacitor, and an instrumentation amplifier.

  • True
  • False
Q.9

Noncontacting displacement transducers include optical and capacitive transducers.

  • True
  • False
Q.10

The triac provides better dc power control than the SCR.

  • True
  • False
Q.11

The number of bits in a digital word determines the number of digital combinations that will be represented. The number of combinations can be calculated by ________.

  • raising 2 to the number of bits in the analog word
  • raising 2 to the number of bits in the digital word
  • multiplying 2 by the number of bits in the analog word
  • determining the range of the analog word
Q.12

The ______ is composed of a transformer with a movable core, a primary, and two secondaries.

  • LVDT
  • strain gauge
  • accelerometer
  • transformer displacement sensor
Q.13

The three types of relative pressure measurement are ________.

  • exact, reflective, and referenced
  • absolute, exact, and differential
  • absolute, gauge, and reflective
  • absolute, gauge, and differential
Q.14

The two most common types of analog-to-digital converters discussed in this chapter were the ______.

  • linear converter and the analog converter
  • linear converter and the successive approximation converter
  • flash converter and the analog converter
  • flash converter and the successive approximation converter
Q.15

The SCR is ideal for ac applications.

  • True
  • False
Q.16

Displacement, velocity, and acceleration can all be measured by using specific motion transducers.

  • True
  • False
Q.17

A(n) _____ can be rapidly switched on and off remotely by another controlling circuit.

  • triac
  • diac
  • RTD
  • zero-voltage switch
Q.18

The voltage produced by a thermocouple is called the _________.

  • hot junction voltage
  • cold junction voltage
  • Seebeck voltage
  • Hooke voltage
Q.19

A strain gauge uses the principle of capacitance for its operation.

  • True
  • False
Q.20

A sample-and-hold circuit consists of _________.

  • an op-amp, an analog switch, and an inductor
  • an op-amp, an analog switch, and a capacitor
  • two op-amps, an analog switch, and a variable resistor
  • two op-amps, an analog switch, and a capacitor
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