If ground is applied to the (+) terminal of an inverting op-amp, the (–) terminal will_____________?

Related Mcqs:

1. The closed-loop voltage gain of an inverting amplifier equal to______________?

   A. The ratio of the input resistance to feedback resistance
   B. The open-loop voltage gain
   C. The feedback resistance divided by the input resistance
   D. The input resistance

2. A non inverting closed loop op amp circuit generally has a gain factor______________?

   A. Less than one
   B. Greater than one
   C. Of zero
   D. Equal to one

3. A 741-Type OP-AMP has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of______________?

   A. 50KHz
   B. 100KHz
   C. 1000/17KHz
   D. 1000/7.07KHz

4. Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5kΩ and C1 = 0.05μF___________?

   A. 1.273kHz
   B. 12.73kHz
   C. 127.3 kHz
   D. 127.3 Hz

5. Assume that the op-amp of the fig. is ideal. If Vi is a triangular wave, then V0 will be______________?

   A. Square wave
   B. Triangular wave
   C. Parabolic wave
   D. Sine wave

6. A differential amplifier is invariably used in the i/p stage of all op-amps. This is done basically to provide the op-amps with a very high______________?

   A. CMMR
   B. Bandwidth
   C. Slew rate
   D. Open-loop gain

7. How many op-amps are required to implement this equationop-amps?

   A. 2
   B. 3
   C. 4
   D. 1

8. Hysteresis is desirable in Schmitt-trigger, because______________?

   A. Energy is to be stored/discharged in parasitic capacitances
   B. Effects of temperature would be compensated
   C. Devices in the circuit should be allowed time for saturation and desaturation
   D. It would prevent noise from causing false triggering

9. 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 zero
   C. The current from output terminal is zero
   D. The output resistance is zero

10. Differential amplifiers are used in______________?

    A. Instrumentation amplifiers
    B. Voltage followers
    C. Voltage regulators
    D. Buffers