a) The domain wall motion varies b) The domain wall motion becomes constant c) The domain wall motion becomes reversible d) The domain wall motion becomes irreversible Ans: (d)
a) Increase if the flux density decreases b) Increase if the flux density increases c) Increase if the core area increases d) Increase if the core length increases Ans: (b)
a) The conductivity of ferromagnetic material is better than ferrites b) The conductivity of ferrites is better than ferromagnetic materials c) The conductivity of ferrites is same as that of ferromagnetic materials d) The conductivity of ferrites is very high Ans: (b)
a) Linearly b) Non-linearly c) Parabolically d) Sinusoidally Ans: (b)
a) Energy stored by capacitor b) Positive c) Half of the energy stored d) Zero Ans: (d)
a) The reactance of the inductor b) The current flowing in the inductor c) The big size of the inductor d) The false statement made in this question Ans: (d)
a) Reactive power b) True power c) Apparent power d) Reactive and power Ans: (b)
a) Ferromagnetic materials b) Anti-ferromagnetic materials c) Ferrites d) Ferromagnetic materials Ans: (b)
a) Polarizer converts the produced hydrogen in the water in the carbon zinc battery b) Depolarizer converts the produced hydrogen in the water in the carbon zinc battery c) Carbon power converts the produced hydrogen in the water in the carbon zinc battery d) Zinc chloride converts the produced hydrogen in the water in the carbon zinc battery Ans: (b)
a) Lead acid battery b) Carbon zinc cell c) Dry cell d) Zinc electrolyte cell Ans: (c)
a) Carbon power b) Zinc chloride c) Iron ore and carbon powder d) Ammonia chloride Ans: (c)
a) The magnetic field will be developed in the conductor b) The magnetic field and heat is developed in the conductor c) The only heat is developed in the conductor d) The molecules of the conductor attract each other Ans: (b)
a) 80 ohms transmission line feeding to a load of 320 ohms b) 20 ohms transmission line feeding to a load of 100 ohms c) 100 ohms transmission line feeding to a load of 300 ohms d) 50 ohms transmission line feeding to a load of 500 ohms Ans: (a)
a) Active network b) Passive network c) Resistive network d) Resistive and inductive network Ans: (b)