Solid State Devices

191. Varistors are used for line filtering to eliminate spikes and dips and is also called

1. Transient regulator
2. Transient limiter
3. Transient filter
4. Transient suppressor

View answer

192. What are often called square law devices?

1. Transistors
2. Diodes
3. SCRs
4. JFETs

View answer

193. What are the electrons at the outermost shell which are usually weakly attracted by the core such that an outside force can easily dislodge these electrons from the atom?

1. Free electrons
2. Orbiting electrons
3. Bound electrons
4. Loose electrons

View answer

194. What are the majority current carriers in the N-type silicon?

1. Free electrons
2. Holes
3. Bounded electrons
4. Protons

View answer

195. What are the solid state gallium arsenide devices that emit beam of radiant flux when forward biased?

1. LEDs
2. Photoconductive cells
3. IR emitters
4. Photodiodes

View answer

196. What are the three terminals of a FET?

1. Gate, source and drain
2. Plate, cathode and grid
3. Gate source and battery
4. Input, output and ground

View answer

197. What are the two possible breakdown mechanisms in pn junction diodes?

1. Reverse and breakdown effects
2. Threshold and knee effects
3. Avalanche and forward effects
4. Zener and avalanche effects

View answer

198. What capacitors are used in transistor amplifiers?

1. Mica
2. Air
3. Electrolytic
4. Paper

View answer

199. What device uses a material catwhisker as its anode and is classified as a hot-carrier diode?

1. PIN
2. Point-contact diode
3. Shockley diode
4. Crystal diode

View answer

200. What device whose internal capacitance varies with the applied voltage?

1. Zener diode
2. Photodiode
3. Tunnel diode
4. Varactor diode

View answer