LIC_01_21-09-23

A voltage-follower

• (a) has a gain of one
  

• (b) is noninverting
  

• (c) has no feedback resistor
  

• (d) answers (a), (b), and (c)
  

The closed-loop input impedance in a non-inverting amplifier is

• Larger than the open-loop input impedance
  

• Equal to the open-loop input impedance
  

• Less than the open-loop input impedance
  

• Ideally zero
  

For non-inverting amplifier the input and output is

• out of phase
  

• in-phase
  

• have phase difference of
  180deg
  

• have phase difference of
  90deg
  

Which concept states that if one input terminal of op-amp is at zero potential, then the other one
also will be at zero potential?

• virtual short
  

• virtual ground
  

• zero input current
  

• none
  

When an op amp is not saturated, the voltages at the non-inverting and inverting inputs are

• Almost equal
  

• Much different
  

• Equal to the output voltage
  

• Equal to ±15 V
  

A non-inverting amplifier employs which feedback topology?

• shunt-shunt

• shunt-series

• series-shunt

• series-series

Voltage follower is used as a

• high gain aplifier

• high frequency amplifier

• buffer amplifier

• not at all useful

An inverting amplifier is a

• trans-resistance amplifier

• trans-conductance amplifier

• voltage amplifier

• current amplifier

Inverting amplifier employs which feedback topology?

• series-series

• series-shunt

• shunt-series

• shunt-shunt

In an op-amp integrator, the current through the input resistor flows into the

• Inverting input
  

• Noninverting input
  

• Bypass capacitor
  

• Feedback capacitor