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Test: Transducers- 4 - Electronics and Communication Engineering (ECE) MCQ


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25 Questions MCQ Test Sensor & Industrial Instrumentation - Test: Transducers- 4

Test: Transducers- 4 for Electronics and Communication Engineering (ECE) 2024 is part of Sensor & Industrial Instrumentation preparation. The Test: Transducers- 4 questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Transducers- 4 MCQs are made for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Transducers- 4 below.
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Test: Transducers- 4 - Question 1

Which of the following is not a characteristic of an ideal transducer?

Detailed Solution for Test: Transducers- 4 - Question 1
An ideal transducer should show high linearity. A linear system should produce exact output according to input.
Test: Transducers- 4 - Question 2

Potentiometric resistance transducer measures __________.

Detailed Solution for Test: Transducers- 4 - Question 2
A Potentiometric resistance transducer measures linear displacement. It can also be used for measuring angular displacement.
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Test: Transducers- 4 - Question 3

Electrical strain gauge works on the principle of __________.

Detailed Solution for Test: Transducers- 4 - Question 3
An electrical strain gauge works based on the change in resistance as a function of strain. The wire resistance increases with tension and reduces with compression.
Test: Transducers- 4 - Question 4

Commonly used elements for wire strain gauges are __________.

Detailed Solution for Test: Transducers- 4 - Question 4
Nickel and copper are the most commonly used elements for wire strain gauges. They comprise 45 % of Nickel and 55 % of Copper. They exhibit a high value of specific resistance.
Test: Transducers- 4 - Question 5

A transducer converting ground movement or velocity to voltage is known as ________________.

Detailed Solution for Test: Transducers- 4 - Question 5
Geophone is a device used to convert ground movement to voltage, which is used in Remote ground sensors (RGS) and a replacement for broadband seismometers.
Test: Transducers- 4 - Question 6

What is a helipot?

Detailed Solution for Test: Transducers- 4 - Question 6
A resistive transducer in the form of a helix is also known as a heliport. They are used for measuring linear as well as angular motion.
Test: Transducers- 4 - Question 7

Resistance potentiometers convert mechanical displacement into _________.

Detailed Solution for Test: Transducers- 4 - Question 7
Resistive transducers are used for transforming the mechanical displacement into an electrical signal. Linear displacement is applied to the sliding contact, which then converts the change in resistance into voltage or current.
Test: Transducers- 4 - Question 8

Cement is classified under __________.

Detailed Solution for Test: Transducers- 4 - Question 8
Cement can be divided into two broad categories.

They are as follows:

i) Solvent setting cement

ii) Chemically reacting cement.

Test: Transducers- 4 - Question 9

Which of the following represents an active transducer?

Detailed Solution for Test: Transducers- 4 - Question 9
Active transducers are self-generating types; they don’t require external power to work, while passive transducers require external power to work.
Test: Transducers- 4 - Question 10

Strain gauge is a _________.

Detailed Solution for Test: Transducers- 4 - Question 10
A strain gauge is a resistive transducer. It works on the principle of mechanical displacement into a change in resistance.
Test: Transducers- 4 - Question 11

Which transducer is known as a ‘self-generating transducer’?

Detailed Solution for Test: Transducers- 4 - Question 11
The name self-generating transducer is due to its property of working without external power.
Test: Transducers- 4 - Question 12

Stress is defined as _________.

Detailed Solution for Test: Transducers- 4 - Question 12
Stress is defined as the ratio of two quantities as follows

Stress = Force ⁄ Area

The unit of stress is N / m2.

Test: Transducers- 4 - Question 13

Which of the following is an analog transducer?

Detailed Solution for Test: Transducers- 4 - Question 13
Analog transducers convert physical quantity to analog signals while digital transducers convert physical quantity to digital signals. A strain gauge is an example of an Analog transducer.
Test: Transducers- 4 - Question 14

Which of the following can be measured using a Piezo-electric transducer?

Detailed Solution for Test: Transducers- 4 - Question 14
Piezo-electric crystals produced an electric signal when pressure is applied. Examples are quartz, Rochelle salt. That is, it converts force into electric signals.
Test: Transducers- 4 - Question 15

Capacitive transducer is used for?

Detailed Solution for Test: Transducers- 4 - Question 15
Capacitive transducers convert measured into changes in capacitance. Change in capacitance is caused by the difference in dielectric or a change in distance between plates.
Test: Transducers- 4 - Question 16

Which of the following is used in photoconductive cells?

Detailed Solution for Test: Transducers- 4 - Question 16
Photoconductive action is the property of reducing resistance when exposed to light. Selenium shows photoconductive action.
Test: Transducers- 4 - Question 17

What is the relation between scale factor and sensitivity of a transducer?

Detailed Solution for Test: Transducers- 4 - Question 17
Sensitivity is an important property of the transducer. Every transducer should be sufficiently sensitive to provide some output that can be detected.
Test: Transducers- 4 - Question 18

Potentiometric resistance transducer measures __________.

Detailed Solution for Test: Transducers- 4 - Question 18
A Potentiometric resistance transducer measures linear displacement. It can also be used for measuring angular displacement.
Test: Transducers- 4 - Question 19

Resistance transducer has _________.

Detailed Solution for Test: Transducers- 4 - Question 19
A resistance transducer has high electrical efficiency. It provides a sufficient amount of output for further control operations.
Test: Transducers- 4 - Question 20

Strain is defined as _________.

Detailed Solution for Test: Transducers- 4 - Question 20
Strain is defined as the ratio of two quantities as follows

Strain = ∆l / I

where,

l is the length

∆l is the change in length.

Test: Transducers- 4 - Question 21

Resistance potentiometer consists of _________.

Detailed Solution for Test: Transducers- 4 - Question 21
A resistance potentiometer consists of a resistive element. It also has a sliding contact known as a wiper.
Test: Transducers- 4 - Question 22

Stress vs strain curve is always linear.

Detailed Solution for Test: Transducers- 4 - Question 22
The curve of stress vs strain is linear within the elastic limits. Strain measurements must be made on the free surface of anybody. A strain gauge is usually used to measure the magnitude of strain.
Test: Transducers- 4 - Question 23

Sensitivity is the smallest value of measurable strain.

Detailed Solution for Test: Transducers- 4 - Question 23
The smallest value of strain that can be measured is known as the body’s sensitivity. The type of strain gauge used dictates the maximum value of strain that can be measured.
Test: Transducers- 4 - Question 24

Proper functioning of a strain gauge depends on __________.

Detailed Solution for Test: Transducers- 4 - Question 24
A strain gauge works properly only if the bonding material used is durable and keeps the gauge together to the surface of the material that is being tested.
Test: Transducers- 4 - Question 25

Bonding element in a strain gauge must have __________.

Detailed Solution for Test: Transducers- 4 - Question 25
In a strain gauge, the bonding element must have a high insulation resistance value. It should be immune to the effects of moisture and must also have the ability to transmit strain.
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