Levitation Quiz - Final
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1) What type of superconductor is needed for stable quantum levitation to occur ?
Type-I
Type-II
Type-III
2) What two methods for levitation are currently used in Maglev Trains ?
Electrodynamic Suspension and Electromagnetic Suspension
Electrodynamic Suspension and Electrostatic Suspension
Electromagentic Suspension and Electrostatic Suspension
3) In Faraday's Law a magnetic field can produce an electric field and current. Which of the following is true ?
Current only appears where there is no relative motion between the loop and magnet
The current is not related to the relative speed of the magnet
Changing the direction of motion of the magnet will change the current flow direction
4) Standing waves in acoustic levitation are what type of wave?
Longitudinal
Tranverse
Axial
5) In standing wave acoustic levitation the object is located where?
above the nodal point
below the nodal point
at the nodal point
6) Light is a wave and a particle. What particle does light consist of?
photons
bosons
gluons
7) For stable levitation to occur in optical levitation the object being levitated always moves towards?
the region of lowest intensity
the region of highest intensity
the region of lowest resistance
8) Quantum locking is achieved through ?
indivdual field lines penetrating through multiple imperfections in the superconducting layer
magnetic field lines surronding the superconductor
an opposing magentic field induced in the superconducting layer
9) What two types of levitation most commonly use superconductors for levitation ?
Magnetic and Optical
Quantum and Magnetic
Optical and Quantum
10) When photons interact with matter they will produce a radiation pressure. When will the radiation pressure be the greatest ?
When the object is round
When the object is a perfect reflector
When the object is a perfect absorber
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