TC 9-62
CHAPTER 7
CHECK-ON-LEARNING QUESTIONS
When you are satisfied that you have answered every question to the best of your ability, check
your answers using Appendix A. If you missed eight or more questions, you should review the
chapter, paying particular attention to the areas in which your answers were incorrect.
A differential amplifier can have how many input signals and/or output signals?
1.
What is the one interesting aspect of an operational amplifier?
2.
What is the name of the device that the magnetic amplifier uses to control an AC output
3.
signal?
A difference amplifier has how many outputs?
4.
What is the name of the circuit when you combine the CB and CE configurations into a
5.
single transistor amplifier?
What is the secret to understanding any transistor amplifier circuit?
6.
The output of the circuit remains at what constant when computing bias at any time period
7.
(T0 through T8)?
The gain of the differential amplifier (single-output) can be doubled by doing what?
8.
When is the full potential of a circuit used?
9.
Operational amplifiers were originally developed for what?
10.
Why is the operational amplifier in such a widespread use?
11.
What are the three most important characteristics of an operational amplifier?
12.
What is the most common form of a operational amplifier?
13.
How many stages are there within an operational amplifier?
14.
An operational amplifier can be used with how many different input conditions (modes)?
15.
Without feedback, the operational amplifier has what type of operation?
16.
What is one result of degenerative feedback on operational amplifiers?
17.
What is called when a point in a circuit is at ground potential (0 volts) but is not connected
18.
to ground?
What varies the gain of an operational amplifier?
19.
What increases the bandwidth of an operational amplifier circuit?
20.
What type of output will an adder circuit always produce?
21.
A difference amplifier will produce an output based on the difference between what?
22.
A magnetic amplifier has how many moving parts?
23.
What does a magnetic amplifier use to control the power delivered to a load?
24.
When does permeability change?
25.
What is a ampere-turn?
26.
What will increase if you increase the current through a coil?
27.
7-56
TC 9-62
23 June 2005
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