Electrical Engineering MCQs on Op Amp – Operational Amplifier MCQs
Contents
- 1 The differential gain of Op-amp is
- 2 If ground is applied to the (+) terminal of an inverting OP-amp, the (–) terminal will
- 3 Op-amp circuits are cascaded without changing their input output relationships
- 4 When a differential amplifier is operated single-ended
- 5 The common mode voltage gain of a differential amplifier is equal to RC divided by
The differential gain of Op-amp is
The differential gain of Op-amp is
- Around 100
- Dependent on input voltage
- Very high
- Very low
Correct answer: 3. Very high
If ground is applied to the (+) terminal of an inverting OP-amp, the (–) terminal will
If ground is applied to the (+) terminal of an inverting OP-amp, the (–) terminal will
- Be virtual ground
- Have high reverse current
- Not invert the signal
- Not need an input resistor
Correct answer: 1. Be virtual ground
Op-amp circuits are cascaded without changing their input output relationships
Op-amp circuits are cascaded without changing their input output relationships
- True
- False
Correct answer: 1. True
When a differential amplifier is operated single-ended
When a differential amplifier is operated single-ended
- Its output is grounded
- Both inputs are connected together
- The output is not inverted
- One input is grounded and signal is applied to the other
Correct answer: 4. One input is grounded and signal is applied to the other
The common mode voltage gain of a differential amplifier is equal to RC divided by
The common mode voltage gain of a differential amplifier is equal to RC divided by
- 2RE
- re
- 2re
- re/2
Correct answer: 1. 2RE