OP-AMP Circuits

Which of the following amplifier is used in a digital to analog converter? A. Non inverter B. Voltage followerC. Summer D. Difference amplifier

When a step-input is given to an op-amp integrator, the output will be______________? A. A ramp B. A sinusoidal wave C. A rectangular wave D. A triangular wave with dc bias

For an ideal op-amp, which of the following is true? A. The differential voltage across the input terminals is zero B. The current into the input terminals is zeroC. The current from output terminal is zero D. The output…

In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db & 2db respectively, then its common mode rejection ratio is________________? A. 23dB B. 25dB C. 46dB D. 50dB…

Differential amplifiers are used in______________? A. Instrumentation amplifiers B. Voltage followers C. Voltage regulators D. Buffers

The two input terminals of an opamp are labeled as______________? A. High and low B. Positive and negativeC. Inverting and non inverting D. Differential ans non differential

For an op-amp having differential gain Av and common-mode gain Ac the CMRR is given by___________? A. Av + AcB. Av / Ac C. 1 + Av / AC. D. Ac / Av

Hysteresis is desirable in Schmitt-trigger, because______________? A. Energy is to be stored/discharged in parasitic capacitances B. Effects of temperature would be compensatedC. Devices in the circuit should be allowed time for…

The output voltage Vo of the above circuit is____________? A. -6VB. -5V C. -1.2V D. -0.2V

In the above circuit the current ix is___________? A. 0.6AB. 0.5A C. 0.2A D. 1/12A