Magnetic Circuit Point out the wrong statement. Magnetic leakage is undesirable in electric machines because it Increases their cost of manufacture Lowers their power efficiency Leads to their increased weight Produces fringing Increases their cost of manufacture Lowers their power efficiency Leads to their increased weight Produces fringing ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit When both the inductance and resistance of a coil are doubled the value of Initial rate of rise of current is doubled Time constant remains unchanged Final steady current is doubled Time constant is halved Initial rate of rise of current is doubled Time constant remains unchanged Final steady current is doubled Time constant is halved ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Those magnetic materials are best suited for making armature and transformer cores which have ________permeability and _________hysteresis loss. Low, low High, low High, high Low, high Low, low High, low High, high Low, high ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Silicon steel is used in electrical machines because it has Low retentivity Low coercivity Low hysteresis loss High coercivity Low retentivity Low coercivity Low hysteresis loss High coercivity ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit The relative permeability of a ferromagnetic material is Less than one More than 10 More than 100 Ωr 1000 More than one Less than one More than 10 More than 100 Ωr 1000 More than one ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Energy stored by a coil is doubled when its current is increased by percent. 42.5 44.6 47.5 41.4 42.5 44.6 47.5 41.4 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS