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RF Cafe Quiz #31

RF Engineering Quizzes - RF CafeAll RF Cafe Quizzes make great fodder for employment interviews for technicians or engineers - particularly those who are fresh out of school or are relatively new to the work world. Come to think of it, they would make equally excellent study material for the same persons who are going to be interviewed for a job. Bonne chance, Viel Glück, がんばろう, buena suerte, удачи, in bocca al lupo, 행운을 빕니다, ádh mór, בהצלחה, lykke til, 祝你好運. Well, you know what I mean: Good luck!

Click here for the complete list of RF Cafe Quizzes.

Note: Some material based on books have quoted passages.

RF Cafe Featured Book - Quantum Mechanics for NanostructuresThis quiz is based on the information presented in the book, "Quantum Mechanics for Nanostructures," by Vladimir V. Mitin, Dmitry I. Sementsov, Nizami Z. Vagidov.

Published by Cambridge University Press.

 Note: Some of these books are available as prizes in the monthly RF Cafe Giveaway.

1.  When was the notion of "nanotechnology" introduced?

a)  1999

b)  1979

c)  1959

d)  1939

2.  What determines whether a material is a nanostructure?

a)  At least one dimension less than 100 nm

b)  No dimension greater than 1 nm

c)  Metric versus English units

d)  There is no formal distinction between nano and macro

3.  What is graphene?

a)  An atomic lattice of carbon in the shape of a Cartesian graph grid

b)  A single layer lattice of carbon atoms

c)  A 3-D crystal lattice of carbon atoms

d)  A carbon-based gas used for welding

4.  When was graphene first produced?

a)  1974

b)  1984

c)  1994

d)  2004

5.  What is the fundamental usefulness of the Schrödinger equation?

a)  It is used to calculate the wavefunction of a system

b)  It determines the relativistic mass of particles

c)  It is used to calculate electron energy levels

d)  It determines whether or not the cat is still alive

6.  What is quantum tunnelling?

a)  The ability of quanta to tunnel

b)  A purely theoretical phenomenon of electrons & protons

c)  Propagation of a proton in the region of a potential barrier

d)  Propagation of an electron in the region of a potential barrier

7.  Spin refers to which property of an electron?

a)  Angular momentum

b)  Whether it is pointing up or down

c)  Rotational speed

d)  The ability to recast information according to its bias

RF Cafe - (image from Wikipedia)8.  What does the image to the right represent?

a)  A molecule of graphene

b)  An atom of graphite

c)  A carbon nanotube

d)  A diamond nanotube

9.  What is the basis of a "single electron" device?

a)  Devices constructed from a single electron

b)  Devices that absorb a single electron per hole

c)  Devices based on the effect of tunneling of a single electron

d)  Devices with a single electron in the orbital

10.  In classical physics, what does a particle's total mechanical energy consist of?

a)  Kinetic energy + potential energy

b)  Kinetic energy * potential energy

c)  Sqrt (Kinetic energy2 + potential energy2)

d)  Sqrt (Kinetic energy * potential energy)


Need some help? Click here for the answers and explanations.

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    Kirt Blattenberger,


RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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