Q88
Which of the following methods are used for producing damping torque in analog instruments? 1. Air friction damping 2. Fluid friction damping 3. Eddy current damping 4. Electromagnetic damping
A.
1, 2 and 3 only
B.
1, 2 and 4 only
C.
1, 3 and 4 only
D.
1, 2, 3 and 4
AnswerAnswer: Option D
Solution
Answer: Option D
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