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Electronics and Communication Engineering - Measurements and Instrumentation - Discussion

Discussion Forum : Measurements and Instrumentation - Section 4 (Q.No. 18)
Measurements and Instrumentation
18.
Consider the following instruments
  1. Tangent galvanometer
  2. Rayleigh current balance
  3. Household energy meter
  4. Hot wire ammeter
Out of above absolute instruments are
1, 2 and 3
1, 2 and 4
1 and 2
2, 3 and 4
Answer: Option
Explanation:

Only tangent galvanometer and Rayleigh Current balance are absolute instruments. Energy meter and ammeter are secondary instruments.

Discussion:
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