Q179
Consider the following types of digital voltmeters: 1. Ramp type 2. Dual slope integrating type 3. Integrating type using voltage to frequency conversion 4. Successive approximation type 5. Servo balanced potentiometer type Which of these require a fixed reference voltage at the comparator stage?
A.
1 and 2 only
B.
2, 4 and 5 only
C.
2 and 3 only
AnswerD.
1, 4 and 5 only
Answer: Option C
Solution
Answer: Option C
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