Deck 57: The Operational Amplifier

Question 1

There are different types of op amps used, depending on the type of circuit it is intended to operate in.

Answer 1

True

Question 2

Op amps can only be used in three types of circuits.

Answer 2

False

Question 3

The 741 operational amplifier can easily be changed from a square wave oscillator to a(n) ____.

A) triple wave
B) sine wave
C) voltage inverter
D) pulse generator

Answer 3

pulse generator

Question 4

An oscillator is generally considered to produce a waveform that has positive and negative pulses of equal voltage and ____.

A) time
B) resistance
C) current
D) power

Question 5

The operational amplifier is often used as a level detector or comparator.

Question 6

The 741 op amp has an output impedance of about ____.

A) 25 ohms
B) 50 ohms
C) 75 ohms
D) 100 ohms

Question 7

In the voltage follower, the output ____.

A) voltage is the same polarity as the input voltage
B) of the op amp is connected directly back to the inverting input
C) will be a positive-going voltage at the same time
D) voltage will be opposite in polarity to the input voltage

Question 8

The ideal amplifier should have an input impedance of infinity.

Question 9

An operational amplifier can be used as a(n) ____.

A) bipolar transistor
B) oscillator
C) field effect transistor
D) noninverting amplifier

Question 10

The open loop gain of the 741 operational amplifier is about 400,000.