In a portable instrument, the controlling torque is provided by
A) spring
B) gravity
C) eddy currents
D) all of the above
Correct Answer:
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Q2: Which of the following devices may be
Q3: For handling greater currents induction wattmeters are
Q4: The pointer of an indicating instrument should
Q5: In majority of instruments damping is provided
Q6: An ammeter is a
A)secondary instrument
B)absolute instrument
C)recording instrument
D)integrating
Q8: The desirable static characteristics of a measuring
Q9: The ratio of maximum displacement deviation to
Q10: Systematic errors are
A)instrumental errors
B)environmental errors
C)observational errors
D)all of
Q11: The gravity controlled instrument has crowded scale
Q12: Instrument transformers are
A)potential transformers
B)current transformers
C)both (a) and
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