26. The main purpose of an instrumentation amplifier is to amplify ________ signals that are riding on ________ common-mode voltages.
(a) small, small
(b) small, large
(c) large, small
(d) large, large
27. What is (are) the principal area(s) of application for isolation amplifiers?
(a) medical
(b) power plant
(c) automation
(d) all of the above
28. The process known as signal compression is used with a(n) ____ amplifier.
(a) log
(b) antilog
(c) instrumentation
(d) isolation
29. A log amplifier has ________ in the feedback loop.
(a) a diode
(b) a BJT
(c) a resistor
(d) either a diode or a BJT
30. The operational transconductance amplifier (OTA) is primarily a ________ -to- ________ amplifier.
(a) current, voltage
(b) voltage, current
(c) current, resistance
(d) resistance, current
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