some of electronic questions

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1. What is meant by cell?
The brasic living unit of the body is cell. The function of organs and other
structure of the body is understood by cell organization.

2. Give the abbreviation form for RNA, DNA?
RNA –Ribo Nucleic Acid DNA—De- Oxy Nucleic Acid

3. What are resting and action potential, bio electric potential?
The membrane potential caused by the different concentration of ions is
called resting potential. It is caused by very rapid change of membrane
permeability to sodium ions followed by recovery period.
The positive potential of the cell membrane during excitation is called
action potential. Certain systems of the body generate their own monitoring
signals conveying useful information about the functions they represent. Such
signals are bio electric potentials and are related to nerve conduction, brain
activity, heart beat etc.

4. What is meant by measurement?
Measurement is an act or the result of comparison between the quantity
and a predefined standard.

5. Mention the basic requirements of measurement.
The standard used for comparison purpose must be accurately defined and
should be commonly accepted.
The apparatus used and the method adopted must be provable.

6. What are the 2 methods for measurement?
1.Direct method and
2. Indirect method.

7. Explain the function of measurement system.
The measurement system consists of a transuding element which converts
the quantity to be measured in an analogous form the analogous signal is then
processed by some intermediate means and is then fed to the end device which
presents the results of the measurement.

8. Define Instrument.
Instrument is defined as a device for determining the value or magnitude
of a quantity or variable.

9. List the types of instruments?
The 3 types of instruments are
Mechanical Instruments
Electrical Instruments and
Electronic Instruments.

10. Classify instruments.
Absolute Instruments
Secondary Instruments