Instrumentation Transducers

Hall Effect Transducers

Question 1
Marks : +2 | -2
Pass Ratio : 8%
Hall Effect transducer can be used to measure ___________
Magnetic field
Angular displacement
Linear displacement
All of the mentioned
Explanation:
Hall Effect transducers can be used to measure linear and angular displacement and magnetic field etc.
Question 2
Marks : +2 | -2
Pass Ratio : 15%
Force exerted by magnetic field in Hall Effect transducers is ____________
Lorentz force
Hall Effect force
Magnetic force
Electric force
Explanation:
Lorentz force is the force exerted by a magnetic field in Hall Effect transducers. On equilibrium condition Lorentz force balances Hall Effect force.
Question 3
Marks : +2 | -2
Pass Ratio : 15%
Hall Effect transducers attain equilibrium instantaneously.
True
False
Explanation:
A time delay of 10-14 is required for a Hall Effect transducer to attain equilibrium.
Question 4
Marks : +2 | -2
Pass Ratio : 15%
Which of the following represents the correct expression of Lorentz force?
EH/b
eEH/b
eEH
None of the mentioned
Explanation:
Magnitude of Lorentz force will be equal to the ratio of the product of electronic charge and Hall potential with width in meters.
Question 5
Marks : +2 | -2
Pass Ratio : 15%
At equilibrium Lorentz forces will be ____________ of Hall Effect force.
Double
Half
Equal
No proportionality
Explanation:
At equilibrium condition, Lorentz force and Hall Effect force balances each other and they will be equal in magnitude.
Question 6
Marks : +2 | -2
Pass Ratio : 8%
Hall Effect is a/an _____________
Electronic
Magnetic
Galvanic
Ionizing
Explanation:
Hall Effect is due to the interaction of the magnetic field and moving electric charge which results in the development of forces that alter the motion of charge.
Question 7
Marks : +2 | -2
Pass Ratio : 15%
Hall Effect is clearly visible in _______________
Pure conductors
Semiconductors
Super conductors
Metals
Explanation:
Hall coefficient depends on the number of free charge carriers and it is clearly visible in semiconductors.
Question 8
Marks : +2 | -2
Pass Ratio : 15%
Which of the following represents correct expression for Lorentz force?
BeV
BV
eV
B
Explanation:
Lorentz force is the product of magnetic flux density, electronic charge and Velocity of charge.
Question 9
Marks : +2 | -2
Pass Ratio : 8%
Hall potential is inversely proportional to magnetic flux density.
True
False
Explanation:
Hall potential is always directly proportional to magnetic flux density. Expression is given as EH=BbV; where b is the width and V represents velocity.
Question 10
Marks : +2 | -2
Pass Ratio : 8%
Which of the following represents the output of Hall Effect transducer?
Hall potential
Emf
Applied voltage
Lorentz Voltage
Explanation:
Output of Hall Effect transducer is called Hall potential and is denoted by EH.