Magnetic Circuit The rate of rise of current through an inductive coil is maximum Near the final maximum value of current At 63.2% of its maximum steady value At the start of the current flow After one time constant Near the final maximum value of current At 63.2% of its maximum steady value At the start of the current flow After one time constant 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 An air gap is usually inserted in magnetic circuits to None of the listed here Increase m.m.f. Prevent saturation Increase the flux None of the listed here Increase m.m.f. Prevent saturation Increase the flux ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Hysteresis loss least depends on Volume of material Ambient temperature Steinmetz’s coefficient of material Frequency Volume of material Ambient temperature Steinmetz’s coefficient of material Frequency ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Point out the wrong statement. Magnetic leakage is undesirable in electric machines because it Lowers their power efficiency Produces fringing Increases their cost of manufacture Leads to their increased weight Lowers their power efficiency Produces fringing Increases their cost of manufacture Leads to their increased weight ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit The unit of magnetic flux is Weber Henry Ampere/metre Ampere-turn/weber Weber Henry Ampere/metre Ampere-turn/weber ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS