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Electronics and Communication Engineering - Electronic Devices and Circuits

Exercise : Electronic Devices and Circuits - Section 7
1.
A single phase energy meter operates on induction principle.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The accuracy of measurement using CRO is about
± 0.5%
± 0.05 %
± 1%
± 3%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The channel required for FM telemetry is
same as required for AM telemetry
smaller than that required by AM telemetry
100 times that required for AM telemetry
10 times that required for AM telemetry
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.

Assertion (A): Absolute instruments are used in standard laboratories.

Reason (R): Absolute instruments do not require calibration.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.

Assertion (A): A 3 phase wattmeter consists of two wattmeters mounted in one case.

Reason (R): Power measurement in a 3 phase circuit can be conveniently done by two wattmeter method.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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