Operational Amplifier

 Input offset current is basically defined as the algebraic ______ the base current of two transistors.

• sum of
  

• difference between

• product of

• division of

What is PSRR value of an ideal op-amp?

• Zero
  
  

• Unity

• Infinite

• Unpredictable

PSSR is an op-amp parameter which defines the degree of dependence on variations in _______.

• Temperature

• pressure

• power supply voltage

• slew rate

CMRR of a differential amplifier can be improved by decreasing ______.

• Differential voltage gain
  

• Both a and b

• None of the above

• Common mode voltage gain

What is the primary function of a differential amplifier?

• Amplify common mode signals

• Amplify differential mode signals

• Amplify both common mode and differential mode signals

• Attenuate signals

What is the purpose of a voltage follower circuit?

• To amplify the input voltage

• To provide high input impedance

• To provide low output impedance

• To invert the input voltage

What is the significance of the common mode rejection ratio (CMRR) in an op-amp?

• It measures the op-amp's ability to reject common mode signals

• It measures the op-amp's bandwidth

• It measures the op-amp's slew rate

• It measures the op-amp's power consumption

In differential mode of op-amp, if output voltage is equal to the difference between outputs of individual transistors, its amplitude will be _______the amplitude of signal voltage yielded at collector to ground.

• twice
  

• thrice

• four times

• one-fourth times

In a typical op-amp, which stage is supposed to be a dual-input unbalanced output or single-ended output differential amplifier?

• Input stage
  

• Intermediate stage

• Output stage

• Level shifting stage

What does the term 'slew rate' refer to in the context of op-amps?

• The rate at which the op-amp output voltage changes

• The op-amp's ability to reject common mode signals

• The op-amp's bandwidth

• The op-amp's power consumption