1. A constant-current source delivers a load current that A) remains constant when the load resistance changes B) varies with load resistance C) varies inversely with load resistance D) varies inversely with input voltage Answer: D) varies inversely with input voltage 2. The voltage gain of a basic instrumentation amplifier is set by a(n) A) diode. B) capacitor C) resistor D) inductor Answer: C) resistor 3. What is (are) the level(s) of the input voltage to a ladder-network conversion? A) 0 B) Vref C) 0 V or Vref D) None of the above Answer: A) 0 4. Circuits that shift the dc level of a signal are called A) limiters B) clampers
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