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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 4
41.
As per BIS, the number of accuracy classes of instrument is
5
6
7
8
Answer: Option
Explanation:

8 losses.

42.
In most of instruments, the controlling torque is provided by
fluid fraction
spring
eddy current
either (a) or (c)
Answer: Option
Explanation:

Eddy current damping is very common.

43.
A 0-200 V voltmeter has a sensitivity of 1 kΩ per volt. The resistance of voltmeter is
1 kΩ
200 kΩ
100 kΩ
50 kΩ
Answer: Option
Explanation:

200 x 1 kΩ.

44.
DC ampere hour meter is an indicating instrument.
True
False
Answer: Option
Explanation:

It is an integrating instrument.

45.
The accuracy of measurement by ohmmeter is very good.
True
False
Answer: Option
Explanation:

It is very low.

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