Electronics and instrumentation Archives - MCQ and Quiz for Exams

1. For biomedical applications the mostly used amplifier is

Single ended amplifier

Differential amplifier

Inverting operational amplifier

Chopper amplifier

Detailed SolutionFor biomedical applications the mostly used amplifier is

2. The _________ of a recording system is the magnitude of input voltage required to produce a standard deflection in a recorded trace.

Accuracy

Linearity

Sensitivity

Resolution

Detailed SolutionThe _________ of a recording system is the magnitude of input voltage required to produce a standard deflection in a recorded trace.

3. Pre amplifier isolation in ECG circuit is to

Increase input impedance

Decrease input impedance

Increase output impedance

Decrease output impedance

Detailed SolutionPre amplifier isolation in ECG circuit is to

4. A voltmeter is connected in a ___________ with the circuit component across which potential difference is to be measured.

Parallel

Series

Series or parallel

None of the above

Detailed SolutionA voltmeter is connected in a ___________ with the circuit component across which potential difference is to be measured.

5. A transducer that converts measurand into the form of pulse is called

Active transducer

Analog transducer

Digital transducer

Pulse transducer

Detailed SolutionA transducer that converts measurand into the form of pulse is called

6. The amplifier gain varies with frequency. This happens mainly due to

Miller effect

Presence of external and internal capacitance

Logarithmic increase in its output

Inter stage transformer

Detailed SolutionThe amplifier gain varies with frequency. This happens mainly due to

7. A chopper amplifier

Converts AC signal from low frequency to high frequency

Converts DC signal from low frequency to high frequency

Converts AC signal from low frequency to DC high frequency

Converts DC signal from low frequency to high frequency

Detailed SolutionA chopper amplifier

8. When a number of components are fabricated on same IC chip it is necessary to provide isolation between two different components for input interconnection is called __________.

Input amplification

Input differentiation

Common mode rejection

Input isolation

Detailed SolutionWhen a number of components are fabricated on same IC chip it is necessary to provide isolation between two different components for input interconnection is called __________.

9. Duration of rotation of pen in the PMMC system depends upon ___________.

Phase angle

Frequency

Magnitude

Direction

Detailed SolutionDuration of rotation of pen in the PMMC system depends upon ___________.

10. Quartz and Rochelle salt belongs to ___________ of piezo-electric materials

Natural group

Synthetic group

Natural or Synthetic group

Fiber group

Detailed SolutionQuartz and Rochelle salt belongs to ___________ of piezo-electric materials

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