SMART Materials

Which of the following is a type of SMART material?

• Plastic

• Piezoelectric

• Wood

• Metal

Which SMART material is often used in sensors and actuators?

• Piezoelectric

• Smart Glass

• Shape Memory Alloy

• Magneto-Rheostatic Fluid

Smart glass can change its transparency in response to ______.

• Light

• Sound

• Pressure

• Temperature

Fill in the blank: A piezoelectric material in a car airbag system senses the ________ of an impact.

• temperature

• force

• speed

• light

What is the effect of passing an electrical current through a piezoelectric material?

• It changes color

• It emits sound

• It increases in size

• It decreases in size

ER fluids are capable of changing their ______ in the presence of an electric field.

• color

• viscosity

• temperature

• density

ER fluids have been developed for use in ______ to reduce noise and vibration in vehicles.

• clutches and valves

• tires and brakes

• windows and doors

• seats and dashboards

MR fluids are being developed for use in which of the following?

• Car shocks

• Cooking oil

• Paint

• Cleaning agents

The stronger the magnetic field, the more ______ the MR fluid becomes.

• liquid

• viscous

• transparent

• volatile

The viscosity of MR fluid increases due to the magnetic particles ______.

• evaporating

• aligning themselves

• breaking apart

• changing color