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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 7
36.
In a CRO, the time base signal is applied to
X plates
Y plates
either X or Y plates
alternately X and Y plates
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Schering bridge operates at a high voltage of about 10 kV.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Which of these instrument does not have a control spring?
Moving iron ammeter
PMMC ammeter
Electrostatic voltmeters
Power factor meter
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
In Weston frequency meter, the magnetic axes of the two fixed coils are
parallel
perpendicular
inclined at 60°
inclined at 15°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Which one of the following is true?
Alternating voltage and current contain odd and even harmonics
The inductance in a circuit reduces the effect of harmonics and makes current wave more sinusoidal than voltage wave
Alternating voltage and current waveforms, in general, do not contain odd harmonics
Inductance of a circuit does not alter wave shape at all
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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