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Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Test  >  Sensor & Industrial Instrumentation  >  Test: Transducers- 4 - Electronics and Communication Engineering (ECE) MCQ

Transducers- 4 - Free MCQ Practice Test with solutions, GATE ECE Engineering


MCQ Practice Test & Solutions: Test: Transducers- 4 (25 Questions)

You can prepare effectively for Electronics and Communication Engineering (ECE) Sensor & Industrial Instrumentation with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Transducers- 4". These 25 questions have been designed by the experts with the latest curriculum of Electronics and Communication Engineering (ECE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 30 minutes
  • - Number of Questions: 25

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Test: Transducers- 4 - Question 1
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Which of the following is not a characteristic of an ideal transducer?

Detailed Solution: Question 1

An ideal transducer should show high linearity. A linear system should produce exact output according to input.

Test: Transducers- 4 - Question 2
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Potentiometric resistance transducer measures __________.

Detailed Solution: 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
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Electrical strain gauge works on the principle of __________.

Detailed Solution: 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
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Commonly used elements for wire strain gauges are __________.

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

Detailed Solution: 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
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What is a helipot?

Detailed Solution: 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
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Resistance potentiometers convert mechanical displacement into _________.

Detailed Solution: 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
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Cement is classified under __________.

Detailed Solution: 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
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Which of the following represents an active transducer?

Detailed Solution: 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
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Strain gauge is a _________.

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

Detailed Solution: Question 11

The name self-generating transducer is due to its property of working without external power.

Test: Transducers- 4 - Question 12
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Stress is defined as _________.

Detailed Solution: 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
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Which of the following is an analog transducer?

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

Detailed Solution: 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
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Capacitive transducer is used for?

Detailed Solution: 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
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Which of the following is used in photoconductive cells?

Detailed Solution: Question 16

Photoconductive action is the property of reducing resistance when exposed to light. Selenium shows photoconductive action.

Test: Transducers- 4 - Question 17
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What is the relation between scale factor and sensitivity of a transducer?

Detailed Solution: 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
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Potentiometric resistance transducer measures __________.

Detailed Solution: Question 18

A Potentiometric resistance transducer measures linear displacement. It can also be used for measuring angular displacement.

Test: Transducers- 4 - Question 19
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Resistance transducer has _________.

Detailed Solution: 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
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Strain is defined as _________.

Detailed Solution: 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
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Resistance potentiometer consists of _________.

Detailed Solution: 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
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Stress vs strain curve is always linear.

Detailed Solution: 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
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Sensitivity is the smallest value of measurable strain.

Detailed Solution: 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
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Proper functioning of a strain gauge depends on __________.

Detailed Solution: 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
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Bonding element in a strain gauge must have __________.

Detailed Solution: 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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About this Electronics and Communication Engineering (ECE) Practice Test

This test contains 25 MCQs on Transducers- 4 with detailed solutions for each question. It is part of the Sensor & Industrial Instrumentation course on EduRev, designed to align with the current Electronics and Communication Engineering (ECE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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