Engineering Materials in EE According to the Bohr model, an electron gains or losses energy only by moving faster or slower in an allowed orbit. jumping from one atom to another atom. jumping from one allowed orbit to another. being completely removed from an atom. moving faster or slower in an allowed orbit. jumping from one atom to another atom. jumping from one allowed orbit to another. being completely removed from an atom. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The permeability of iron can be increased by alloying with cobalt. purifying it. reducing carbon percentage. increasing carbon percentage. alloying with cobalt. purifying it. reducing carbon percentage. increasing carbon percentage. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Temporary magnets are used in which of the following ? Generators. All of these. Motors. Hoist. Generators. All of these. Motors. Hoist. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The permanent magnets are made from which of following materials ? Ferromagnetic. Diamagnetic. Paramagnetic. Soft iron. Ferromagnetic. Diamagnetic. Paramagnetic. Soft iron. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE ALNICO is an alloy of iron, aluminium. aluminium, nickel, iron and cobalt. aluminium, nickel. iron, cobalt, nickel. iron, aluminium. aluminium, nickel, iron and cobalt. aluminium, nickel. iron, cobalt, nickel. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE When a ferromagnetic substance is magnetized small changes in dimensions occur. Such a phenomenon is known as magnetostriction. magneto-calorisation. magnetic expansion. magnetic hysteresis. magnetostriction. magneto-calorisation. magnetic expansion. magnetic hysteresis. ANSWER DOWNLOAD EXAMIANS APP
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