Measurement, Conversion and Control MCQs

Question 1

The resistive change of a strain gauge

Accepted Answer

is based on the gauge factor, but is typically less than an ohm

Answer

is based on the weight placed upon it, but can be many thousands of ohms

Answer

is usually no more than 100 omega.gif

Answer

has a positive temperature coefficient

Question 2

The purpose of compensation for a thermocouple is

Accepted Answer

to cancel unwanted voltage output of a thermocouple

Answer

to decrease temperature sensitivity

Answer

to increase voltage output

Answer

used for high-temperature circuits

Question 3

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

Accepted Answer

Aperture time

Answer

Aperture droop

Answer

Feedback

Answer

Acquisition jitter

Question 4

RTDs are typically connected with other fixed resistors

Accepted Answer

in a bridge configuration

Answer

in a pi configuration

Answer

and variable resistors

Answer

and capacitors in a filter-type circuit

Question 5

A thermistor's temperature characteristic is essentially _________.

Accepted Answer

logarithmic

Answer

linear

Answer

nonlinear

Answer

geometric

Question 6

The three types of relative pressure measurement are ________.

Accepted Answer

absolute, gauge, and differential

Answer

exact, reflective, and referenced

Answer

absolute, exact, and differential

Answer

absolute, gauge, and reflective

Question 7

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

Accepted Answer

flash converter and the successive approximation converter

Answer

linear converter and the analog converter

Answer

linear converter and the successive approximation converter

Answer

flash converter and the analog converter

Question 8

The voltage produced by a thermocouple is called the _________.

Accepted Answer

Seebeck voltage

Answer

hot junction voltage

Answer

cold junction voltage

Answer

Hooke voltage

Question 9

The ________ are two types of acceleration transducers.

Accepted Answer

LVDT and the piezoelectric

Answer

magnetic and the piezoelectric

Answer

RTD and the magnetic

Answer

LVDT and the RTD