Magnetic Circuit The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is ___________Vs 70 50 500 20 70 50 500 20 ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit The property of a material which opposes the creation of magnetic flux in it is known as Reluctivity Magneto-motive force Permeance Reluctance Reluctivity Magneto-motive force Permeance Reluctance ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Hard steel is suitable for making permanent magnets because Its hysteresis loop has large area Its mechanical strength is low Its mechanical strength is high It has good residual magnetism Its hysteresis loop has large area Its mechanical strength is low Its mechanical strength is high It has good residual magnetism ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit The relative permeability of a ferromagnetic material is More than one More than 10 More than 100 Ωr 1000 Less than one More than one More than 10 More than 100 Ωr 1000 Less than one ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Those materials are well suited for making permanent magnets which have ________ retentivity and ________ coercivity. High, low Low, low High, high Low, high High, low Low, low High, high Low, high ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit When both the inductance and resistance of a coil are doubled the value of Time constant is halved Time constant remains unchanged Initial rate of rise of current is doubled Final steady current is doubled Time constant is halved Time constant remains unchanged Initial rate of rise of current is doubled Final steady current is doubled ANSWER DOWNLOAD EXAMIANS APP
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