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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

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 typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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Remember the Basics?
RF Cafe Quiz #22

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.

This quiz challenges your recollection of the basics.

1. How much power is dissipated by the ideal 10 μH inductor in the circuit to the right?

a) 3.2 mW

b) 1.6 mW

c) 0.20 mW

d) 0 mW

2. How much current flows through the guy at the right?

a) 0.1 A

b) 100 mA

c)  50 mA

d) 0 A

3. In the figure for Q2, what voltage would be measured

    between the guy's hand and ground?

a) 100 V

b) 50 V

c) 0 V

d) -100 V

4. What is the name of the newly fabricated 4th type of passive component?

a) Memristor

b) Capristor

c) Indristor

d) Capductor

5. What is the significance of a component's self-resonant frequency?

a) It is the frequency at which the component can be used as an oscillator

b) It is the frequency about which its reactance changes numerical sign (+ to -, or - to +)

c) It is the frequency where the component self-destructs due to stress

d) Self-resonance is a fictitious term

6. Which type of filter is called "maximally flat" in amplitude response?

a) Butterworth

b) Chebyshev

c) Constant K

d) Gaussian

7. What is the approximate melting point of common lead-free solder (e.g., SnAg3.0Cu0.5)?

a) 270 °C (~520 °F)

b) 220 °C (~430 °F)

c) 190 °C (~370 °F)

d) 150 °C (~300 °F)

8. What is the gain of the opamp configuration to

     the right?

a) 1

b) 0

c)  -1

d) -2

9. What is the gain of the opamp configuration to

     the right??

a) 2

b) 1

c) 0

d) -1

10. Which type of transistor is shown to the right ?

a) Enhancement Mode N-Channel MOSFET

b) Depletion Mode N-Channel MOSFET

c) Enhancement Mode P-Channel MOSFET

d) Depletion Mode P-Channel MOSFET

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

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