Measurement, Conversion and Control MCQs

Question 1

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 2

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 3

Holding current for an SCR is best described as

Accepted Answer

the amount of current required to maintain conduction

Answer

the minimum current required for turn-off

Answer

the current required before an SCR will turn on

Answer

the gate current required to maintain conduction

Question 4

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

Accepted Answer

Core

Answer

Primary

Answer

Secondary

Answer

Diaphragm

Question 5

All triacs operate in __________.

Accepted Answer

quadrant 1 and quadrant 3

Answer

quadrant 1 and quadrant 2

Answer

quadrant 2 and quadrant 4

Answer

quadrant 3 and quadrant 4

Question 6

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 ________.

Accepted Answer

raising 2 to the number of bits in the digital word

Answer

raising 2 to the number of bits in the analog word

Answer

multiplying 2 by the number of bits in the analog word

Answer

determining the range of the analog word

Question 7

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

Accepted Answer

triac

Answer

diac

Answer

RTD

Answer

zero-voltage switch

Question 8

A sample-and-hold circuit consists of _________.

Accepted Answer

two op-amps, an analog switch, and a capacitor

Answer

an op-amp, an analog switch, and an inductor

Answer

an op-amp, an analog switch, and a capacitor

Answer

two op-amps, an analog switch, and a variable resistor

Question 9

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

Accepted Answer

resistive

Answer

inductive

Answer

capacitive

Answer

solid-state