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WorksheetsMAGNETISM
Total questions: 10
Worksheet time: 20mins
What is the unit of permeance?
Ampere - turns
Weber / Ampere turns
Ampere turns / Weber
Weber / Square metre
What is the unit of reluctance?
Weber / metre square
Weber / metre
Ampere turns / weber
Ampere turns / metre square
Which defines the flux density is always lagging behind the magnetising force?
Hysteresis
Magnetic intensity
Magnetic induction
Residual magnetism
What is the S.I unit of flux density?
Tesla
Weber
Weber / Metre
Ampere-turns
What is the unit of Magneto Motive Force (MMF) ?
Ampere / M square
Ampere - metre
Ampere - turns
Ampere / turns
Which is the diamagnetic substance?
Air
Steel
Water
Platinum
Which material is the paramagnetic substance?
cleat (porcelain)
copper
Bismuth
Graphite
What is effect on surrounding metal placed in a magnetic field ?
Hysteresis
Skin effect
Eddy current
Dielectric stress
Which electrical quantity is directly proportional to the eddy current ?
Voltage
Current
Frequency
Resistance
What is the effect of inductance if the distance between the turns increases ?
Inductance method
Single touch method
Double touch method
Divided touch method
