Physics Basic MCQs Online Quiz Test With Answers

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

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

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

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

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

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

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

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

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

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

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