Operational Amplifiers Questions

• A noninverting closed-loop op-amp circuit generally has a gain factor:
• The Schmitt trigger is a two-state device that is used for:
• An ideal operational amplifier has
• With negative feedback, the returning signal:
• An ideal amplifier should have:
• A series dissipative regulator is an example of a:
• All of the following are basic op-amp input modes of operation EXCEPT
• What value of input resistance is needed in the given circuit to produce the given output voltage?
• How many logic states does an S-R flip-flop have?
• Op-amps used as high- and low-pass filter circuits employ which configuration?
• An inverting amplifier has a phase shift of 180° from input to output.
• If an input signal is applied to the inverting input of an op-amp with the noninverting input grounded, the output signal would be opposite in polarity to the input.
• If the two inputs to a differential amplifier are exactly the same, then the output is the signal multiplied by 2.
• The ideal output impedance for an operational amplifier is 0 Ω.
• Crystal oscillator circuits have a very low Q.
• Feedback is used in an open-loop operational amplifier circuit.
• An astable multivibrator has two states.
• The feedback resistor adds to the gain of an op-amp.
• It takes 4 µs for the output voltage of an op-amp to rise from –14 V to +14 V. The slew rate of this op-amp is 3.5 V/µs.
• In a common-mode input to an op-amp, both inputs are connected to the same signal source.