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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 9
16.
The accuracy of a multimeter is about
± 0.5%
± 3%
± 0.01%
± 10%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Induction wattmeter is an absolute instrument.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
In a current transformers
the number of turns in primary and secondary windings are nearly equal
the number of primary turns is very small as compared to number of secondary turns.
the number of secondary turns is very small as compared to the number of primary turns
either (a) or (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The time base of a high frequency CRO whose screen diameter is 10 cm is set at 10 μ sec/cm. The lowest frequency which can be fully displayed on the screen is
more than 100 kHz
equal to 100 kHz
equal to 10 kHz
less than 10 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Eddy currents are essential for the deflecting torque of an induction wattmeter.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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