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Material
Q1.Temporary Magnets are Used in Which of the Following?
Hoist
Generators
Motors
All of these
Correct Option :4
Q2.How Many Classes of Insulating Materials are There?
6
7
5
8
Correct Option :2
Q3.Permanent Magnets are Used in
Loud speakers
Generators
Motors
All of above
Correct Option :1
Q4.Almost the Entire Mass of An Atom is Concentrated in The
Protons
Electrons
Neutrons
Nucleus
Correct Option :4
Q5.The Electron Configuration of Sulfur Atom is
2, 8, 6
1s2, 2s2 2p6, 3s2 3p6
2, 8, 2
None of these
Correct Option :1
Q6.Q6 Permittivity of Free Space is Equal to
8.854 × 10 - 12 F / m
8.854 × 10 - 13 F / m
8.854 × 10 - 11 F / m
8.854 × 10 - 10 F / m
Correct Option :1
Q7.The permeability of Iron Can be Increased by
Purifying it
Alloying with Cobalt
Reducing Carbon percentage
Increasing Carbon percentage
Correct Option :1
Q8.The Permanent Magnets are made from Which of Following Materials ?
Soft iron
Ferromagnetic
Paramagnetic
Diamagnetic
Correct Option :2
Q9.In Electrical Machines the Material Preferred for Pole Shoes of Electromagnets is
Copper
Aluminium
Pure iron
Lead
Correct Option :3
Q10.Eddy Current Loss will Depends on
Frequency
Flux density
Thickness
All of the above
Correct Option :4
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