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SIES GRaduate School of Technology, Nerul

Department of Mechanical Engineering

Quiz on 'Smart Material'

BE (ME)SEM-VIII FH-2023

9/03/2023

Name:-

PRN No:-

1. Not an example for actuator

(a) Optical fiber

(b) Shape memory alloys

(d) Electro-/Magneto-rheological fluids

2. Presently most used metal in the world

(a) Aluminium

(b) Gold

(d) Silver

3. The piezoelectric materials used for converting energy are called as ______.

(a) converters

(b) Actuators

(d) Transducer

4. The piezoelectric effect states that when mechanical stress or forces are applied on quartz crystal,

(1) produce electrical charges on the quartz crystal surface.

(2) neutralize charges from quartz crystal.

(3) temperature of quartz crystal increases.

(4) temperature of quartz crystal decreases.

5. Which of the following is not a piezoelectric material?

(1) Lead zirconate titanate (PZT).

(2) Rochelle salt.

(3) Sodium Nitrate

(4) Barium Titanate.

6. Which of the following is not a smart material?

CFRP

SMA

Pizo Electric materials

Thermo chromic paints

7. The type of material that expands and contract in response to an applied electric field is

(A) Smart material

(B) Advanced material

(D) Nanomaterial

Which one of the following is a suitable for use in feeding spoons for babies?

(1) Electroluminescent wire

(2) Photochromic pigment

(3) Piezo electric material

(4) Thermochromic pigment

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