MCQs

The zero-level detector is an application of: Comparator Differentiator Integrator Summing amplifier Correct answer: 1. Comparator

The output stage for the basic op-amp is: Voltage amplifier Differential amplifier Push-pull amplifier None of these Correct answer: 3. Push-pull amplifier

The gain stage for the basic op-amp is: Voltage amplifier Differential amplifier Push-pull amplifier None of these Correct answer: 1. Voltage amplifier

The input stage for the op-amp is: Voltage amplifier Differential amplifier Push-pull amplifier None of these Correct answer: 2. Differential amplifier

The basic op-amp has: One input and one output One input and two outputs Two inputs and two outputs Two inputs and one output Correct answer: 4. Two inputs and one output

To bias in the ohmic region: ID must be much larger than IDSS ID must be larger than IDSS ID must be exactly equal to IDSS ID must be much smaller than IDSS Correct answer: 4. ID must be much smaller than IDSS

The Q-point in a ___________ JFET with is more stable than in a _________ JFET: Self-biased, Voltage-divider biased Voltage-divider biased, Self-biased None of these Any of these Correct answer: 2. Voltage-divider bias, Self-biased

Field-effect transistors are: Bipolar devices Unipolar devices Correct answer: 2. Unipolar devices

Crossover distortion is a problem for which amplifier: Class A Class B Class C Class AB Correct answer: 2. Class B

The type of amplifier which operates only for a small portion of the input cycle: Class A Class B Class C Class AB Correct answer: 3. Class C