Electronics and instrumentation questions with answers
97 multiple-choice questions. Open any question for its answer and explanation.
- Resistively generated inference arises through incorrect __________________.
- The sensitivity factor of strain gauge is normally of the order of
- The decibel is a measure of
- To reduce common mode interference during recording of bio signals one can use __________.
- Pressure transducer for measuring blood pressure is
- The outstanding characteristics of a D.C. amplifier is its
- A strain gauge is a passive transducer and is employed for converting.
- LVDT is an/a ___________ transducer.
- The improper response time of the amplifier in the biomedical recorders
- If the negative potential on the control grid of CRT is increased, the intensity of spot ___________.
- The negative feed back in an amplifier
- Fiber optic sensor can be used to sense ____________.
- Function of microscope is S1: To magnify object, under observation S2: To resolve the object
- A recorder is said to have good frequency response when the sensitivity of the system is _________ for all frequencies present in the signal.
- Certain type of materials generates an electrostatic charge or voltage when mechanical force is applied across them. Such materials are called
- The resistance of LDR ____________ when exposed to radiant energy.
- Fidelity represents S1: Reproduction of signal S2: Reproduction of phase relation
- Most commonly used indicator electrode is
- In a graded index fiber, the total reflected light takes a ___________.
- For display of signal pattern ___________ voltage is applied to the horizontal plates of a CRO
- The resolution limit of electron microscope is
- The principle of operation of variable resistance transducer is
- LVDT windings are wound on
- A voltmeter should have ___________ resistance.
- In a LVDT, the two secondary voltages