Instrumentation Transducers

Ionization Transducers

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Which of the following applications ionization chamber is used?
For detection of nuclear radiation
For better stability
For storing inert gas
For ionizing gas
Explanation:
Ionization chambers in transducers are used for the detection and measurement of nuclear radiation.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Which of the following represents sensitivity of ionization transducer?
Ia/Ig
Ig/Ia
IaIg
Ia/ PIg
Explanation:
Ia is the anode current and Ig is the grid current, P is the absolute pressure of gas.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Which of the following represents a mass absorption coefficient?
Ratio of linear absorption coefficient to density
Product of absorption coefficient and density
Linear absorption coefficient
Product of linear absorption coefficient and mass
Explanation:
Ratio of linear absorption coefficient and density is known as the mass absorption coefficient.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which of the following potential is applied to the grid?
+ve potential
–ve potential
Neutral potential
None of the mentioned
Explanation:
Grid is applied by a +ve potential of 100v in order to attract electrons.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Which of the following are nuclear radiations?
Beta
Alpha
Gamma
All of the mentioned
Explanation:
Beta, alpha, and gamma particles are emitted from radioactive materials and they are known as nuclear radiations.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Which of the following cannot be measured using ionization transducer?
Vacuum pressure
Gaseous pressure
Displacement
None of the mentioned
Explanation:
Ionization transducers can be used for measurement of displacement also.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is a radioactive vacuum gauge?
Cold cathode gauge
Hot cathode gauge
Non ionization gauge
None of the mentioned
Explanation:
Radioactive vacuum gauge is a cold cathode type gauge which is also based on ionization of gas.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
Which of the following has a helium nucleus?
Alpha particle
Beta particle
Gamma particle
All of the mentioned
Explanation:
Alpha particles have a positive charge of 2 and relative mass of 4 which is similar to the helium nucleus.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Cold cathode ionization vacuum gauges are more accurate than hot cathode ionization vacuum gauges.
True
False
Explanation:
Cold cathode vacuum gauges are less accurate than hot cathode vacuum gauges, But some difficulties in hot cathode are reduced in cold cathode type.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is correct for the ionization transducer?
Grid current decrease constantly
Grid current Increases constantly
Grid current is made constant
None of the mentioned
Explanation:
Grid current and primary electrons are always held constant and variations in anode current are measured.