Solid State Devices

291. Which of the items below describes an RF amplifier which will amplify a weak signal voltage in relatively the same proportion as it will amplify a stronger signal voltage?

  1. Class A amplifier
  2. Linear amplifier
  3. Non-linear amplifier
  4. Inverting amplifier

Correct answer: (B)
Linear amplifier

292. Which of the items below is a special precaution necessary in handling FET and CMOS devices?

  1. They have fragile leads that it might break off
  2. The are light sensitive
  3. The are susceptible to damage and static charges
  4. They have microwelded semiconductor junctions that are susceptible to breakage

Correct answer: (C)
The are susceptible to damage and static charges

293. Which of the items below is not a good conductor?

  1. Electrolytes
  2. Ionized gases
  3. Silicon
  4. Silver

Correct answer: (C)
Silicon

294. Which of the items below is not a pentavalent atom?

  1. Phosphorus
  2. Aluminum
  3. Antimony
  4. Arsenic

Correct answer: (B)
Aluminum

295. Which of the items below is not taking place inside a silicon crystal?

  1. Some free electrons and holes are being created by thermal energy
  2. Other free electrons and holes are recombining
  3. Some free electrons and holes exist in an in-between state
  4. Some free electrons disappears in the lattice due to vaporization

Correct answer: (D)
Some free electrons disappears in the lattice due to vaporization

296. Which of the items below is not true with a of a transistor?

  1. It is the current gain of a common-base configuration
  2. It is the ratio of the change in collector current to the change in emitter current
  3. It is usually having a value of unity in some approximations
  4. It is the ratio of the change in collector current to the change in base current.

Correct answer: (D)
It is the ratio of the change in collector current to the change in base current.

297. Who invented the feedback amplifier in 1928?

  1. Henry Brattain
  2. Mark Twain
  3. Harold Black
  4. Bell Labs

Correct answer: (C)
Harold Black

298. With pnp voltage divider bias, you must use

  1. Ground
  2. Negative power supplies
  3. Positive power supplies
  4. Resistors

Correct answer: (B)
Negative power supplies

299. Zener diodes can be primarily classified as

  1. Forward and reverse biased
  2. Varactor and rectifying
  3. Voltage regulation and voltage reference
  4. Gaseous and hot-carrier

Correct answer: (C)
Voltage regulation and voltage reference

300. Zener effect only depends on the

  1. High-speed minority carriers
  2. High-speed majority carriers
  3. Intensity of the electric field
  4. Intensity of the magnetic field

Correct answer: (C)
Intensity of the electric field

Previous
Page 30 of 30
Next
Copyright © EngineeringMCQ.com