16
Figure 2E.—Noninverting Configuration.
IN ANSWERING QUESTIONS 2-37 AND
2-38, REFER TO FIGURE 2E.
2-37. If the amplitude of the input signal is +10
millivolts, what is the amplitude of the
output signal?
1. +70 mV
2. +60 mV
3. -70 mV
4. -60 mV
2-38. The open-loop gain of the operational
amplifier is 100,000 and the open-loop
bandwidth is 10 hertz. If we make it a
closed-loop with a gain of 10, what is the
bandwidth of the circuit?
1. 100 kHz
2. 350 kHz
3. 500 kHz
4. 583 kHz
2-39. Which of the following is a difference
between a summing amplifier and an
adder circuit?
1. The amount of gain
2. The number of inputs
3. The type of operational amplifier
4. The placement of resistors in the
circuit
Figure 2F.—Scaling Amplifier.
IN ANSWERING QUESTIONS 2-40 AND
2-41, REFER TO FIGURE 2F.
2-40. THIS QUESTION HAS BEEN
DELETED.
2-41. If the amplitude of the signal at E1 is +3
volts and the amplitude of the signal at
E2 is +4 volts, what is the amplitude of
the output signal?
1. +39 volts
2. +45 volts
3. -39 volts
4. -45 volts
2-42. If the amplitude of the signal at E1 is +5
volts and the amplitude of the signal at
E2 is +2 volts, what is the amplitude of
the signal at the inverting (-) input of the
operational amplifier?
1.
0 volts
2. +7 volts
3. +21 volts
4. +54 volts
2-43. Which of the following is a difference
between a difference amplifier and a
subtractor?
1. The amount of gain
2. The number of inputs
3. The type of operational amplifier
4. The placement of resistors in the
circuit
