Electronic measurements and instrumentation miscellaneous
- Electronic null detectors have:
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The Electronic null detectors possess
● Excellent sensitivity
● Ruggedness
● CheapCorrect Option: D
The Electronic null detectors possess
● Excellent sensitivity
● Ruggedness
● Cheap
- The purpose of the delay line is to retard the arrival of the input waveform at the:
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The purpose of the delay line is to retard the arrival of the input waveform at the vertical deflection plates until the sweep is started.
Correct Option: A
The purpose of the delay line is to retard the arrival of the input waveform at the vertical deflection plates until the sweep is started.
- A meter has a full-scale angle of 90° at a current of 1 A. This meter has perfect square-law response. What is the current when the deflection is 45°?
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Required current
I′ = I sin 45°= 1 × 1 √2
= ·707Correct Option: C
Required current
I′ = I sin 45°= 1 × 1 √2
= ·707
- Which of the following frequency meters is suitable for measuring radio frequency?
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Hetrodyne frequency meter is suitable for measuring RF (radio frequency).
Correct Option: D
Hetrodyne frequency meter is suitable for measuring RF (radio frequency).
- Potentiometer sensitivity can be increased by:
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The potentiometer sensitivity can be increased by increasing the length of the potentiometer wire.
Correct Option: B
The potentiometer sensitivity can be increased by increasing the length of the potentiometer wire.
