Quiz Day Friday: Electronics and Radio

Welcome — or welcome back — to Quiz Day Friday and Quiz V6.0: Electronics and Radio. If this is your first Quiz Day Friday, then you might want to catch-up on the five previous quizzes:

Quiz V1.0 on General Electronic and Electrical Engineering
Quiz V2.0 on Common Engineering Abbreviations
Quiz V3.0 Electronic and Electrical Engineering – Intermediate
Quiz V4.0 Computer History
Quiz V5.0 C Programming Language

Quiz Day Fridays are brought to you by some of the top members of the Electro-Tech-Online community members including: 3vO,DerStrom, Ian Rogers, Pommie, Roman Black, Reload Ron, JimB, MrAl, and ericgibbs. Electro-Tech-Online is an electrical engineering membership forum where you can ask questions and get answers from your fellow engineers on topics such as robotics, circuit simulation, renewable energy, and dozens more.

Electro-Tech-Online Super Moderator JimB crafted this week’s Quiz V6.0 Electronics and Radio. A member since 2004, JimB has contributed to over 4,500 conversations and has been awarded over 80 Trophy Points to-date by fellow members, including 20 “Can’t Get Enough of You Stuff” and 20 “Addicted” trophies. In other words, he’s got a loyal following.

JimB’s forum profile signature is also noteworthy: “Experience is directly proportional to the value of the equipment ruined,” and “Engineers- designing and building good things despite management stupidity.” Classic.

We list the questions below just to give you a heads-up, but you’ll find the complete quiz — with the multiple choice options — HERE.  

Quiz V6.0 Electronics and Radio 

1. The frequency of a radio signal is 152.5Mhz, what is the approximate wavelength?
2. A 100Mhz sinewave is amplitude modulated (modulation depth is 50%) with a 15khz square wave. If we look at the resulting signal with a spectrum analyzer, we will see individual components at..?
3. A superheterodyne radio receiver, with an intermediate frequency of 450khz is tuned to receive a signal on 2200khz. It also receives an unwanted signal on 2.650Mhz. This problem is due to…?
4. The practical bandwidth required for a frequency modulated signal is given by the expression BW = 2 x (deviation + highest modulating frequency). This is known as…?
5. A 50Mhz radio transmitter is designed to output 10 watts of RF into a 50 ohm load. A single wire antenna 3meters long is connected directly to the antenna socket. The transmitter will…?
6. An amplifier has a gain of 20dB, the input and output impedances are the same, What is the voltage gain of this amplifier?
7. The Q of a coil refers to…?
8. A 20Mhz tuned circuit has a Q of 100. The 3dB bandwidth will be…?
9. The range of a 200mW 450Mhz handheld radio is…?
10. In order to correctly receive a single sideband suppressed carrier signal, a receiver must have…?

Think you know the answers? Click here take the quiz!

See you next Friday…