Physics Basic MCQs Online Quiz Test With Answers

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Physics Solved MCQs Online Quiz Test

Q.1: The operational amplifier is——-?

  1. A high gain amplifier
  2. A high-power amplifier
  3. A high resistance amplifier
  4. A low resistance amplifier

A

Q.2: To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is——-?

  1. 2
  2. 3
  3. 4
  4. 5

D

Q.3: The operation of a transistor requires——-?

  1. That the emitter be heated
  2. That the base be heated
  3. That the collector be heated
  4. None of the above

D

Q.4: Non-inverting amplifier circuits have——?

  1. A very high input impedance
  2. A very low input impedance
  3. A low output impedance
  4. None of the above

A

Q.5: An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ——-?

  1. Non-inverting voltage at output
  2. Reference voltage on the other
  3. Virtual input
  4. Output

B

Q.6: The working of transistor as amplifier is similar to——–?

  1. Step up transformer
  2. Step down transformer
  3. Three diodes in common
  4. Triode vacuum tube

D

Q.7: To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is——-?

  1. 2
  2. 3
  3. 4
  4. 5

B

Q.8: In a half-wave rectifier the r.m.s. value of the A.C. component of the wave is——–?

  1. Equal to D.C. value
  2. More than D.C. value
  3. Less than D.C. value
  4. Zero

B

Q.9: In forward bias the width of potential barrier——-?

  1. Increases
  2. Decreases
  3. Remains same
  4. No effect

B

Q.10: The electronic circuits which implement the various logic operations are called——-?

  1. Logic gates
  2. Boolean algebra
  3. Amplifier gain
  4. Logic functions

A