Instrumentation Transducers Questions and Answers – Nano Instrumentation

This set of Instrumentation Transducers Multiple Choice Questions & Answers (MCQs) focuses on “Nano Instrumentation”.

1. AFM stands for ________________
a) Auto focusing microscope
b) Antenna focusing microscope
c) Atomic force microscope
d) None of the mentioned
View answer

Answer: c
Explanation: AFM stands for Atomic Force Microscope.

2. Phenomenon of producing sound under mechanical stress is called________________
a) Magnetostriction
b) Acoustiction
c) Electrostriction
d) Acoustic emission
View answer

Answer: d
Explanation: Acoustic emission is the process of emission of sound waves under mechanical stress application.

3. Which of the following causes acoustic emission in machineries?
a) Friction
b) Vibration
c) Turbulance
d) All of the mentioned
View answer

Answer: d
Explanation: Acoustic emission in machineries are caused by friction, vibration, turbulance cavitation etc.
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4. Acoustic emission signals will be of the form ______________
a) Discrete transients
b) Quasi continuous
c) Discrete or quasi continuous
d) None of the mentioned
View answer

Answer: c
Explanation: AE signals may be of Discrete transients, quasi continuous or mix of two.

5. By placing sensor nearer to AE, SNR _____________
a) Increases
b) Decreases
c) Doubles
d) No change
View answer

Answer: a
Explanation: Signal to noise ratio is improved by placing sensor nearer to acoustic emission element.

6. PVDF inultrasonic scanning technique can be used at temperature _________________
a) Less than 200C
b) Less than 700C
c) Greater than 1000C
d) None of the mentioned
View answer

Answer: b
Explanation: Polyvinylidene Fluoride is used at temperature below 700C.

7. Thickness of PVDF film will be_______________
a) Less than 100um
b) Less than 10nm
c) Less than 100mm
d) Less than 1cm
View answer

Answer: a
Explanation: Normally thickness of PVDF film will be between 50um and 100um.
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8. Copolymer of PVDF has lower temperature capacity than PVDF.
a) True
b) False
View answer

Answer: b
Explanation: Copolymer of PVDF have temperature capacity of 1450C and PVDF have temperature capacity of 700C.

9. PVDF is _______________ material.
a) Piezoelectric
b) Magnetostrictive
c) Thermoelectric
d) Electrostrictive
View answer

Answer: a
Explanation: Both PVDF and it’s copolymer shows piezoelectric nature.
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10. SNR is signal to noise ratio.
a) True
b) False
View answer

Answer: a
Explanation: SNR stands for a signal to noise ratio.

Sanfoundry Global Education & Learning Series – Instrumentation Transducers.

To practice all areas of Instrumentation Transducers, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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