Electromagnetic induction The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be 3 mH 24 mH 12 mH 48 mH 3 mH 24 mH 12 mH 48 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The self inductances of two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is 12 mH 6 mH 36 mH 18 mH 12 mH 6 mH 36 mH 18 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction In case all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be 1.0 2.0 0.5 2.5 1.0 2.0 0.5 2.5 ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Air-core coils are practically free from Both Hysteresis losses & Eddy current losses None of the listed here Eddy current losses Hysteresis losses Both Hysteresis losses & Eddy current losses None of the listed here Eddy current losses Hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A crack in the magnetic path of an inductor will result in Increased inductance Unchanged inductance Zero inductance Reduced inductance Increased inductance Unchanged inductance Zero inductance Reduced inductance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which circuit element(s) will oppose the change in circuit current? Capacitance only Resistance only Inductance only Inductance and capacitance Capacitance only Resistance only Inductance only Inductance and capacitance ANSWER DOWNLOAD EXAMIANS APP
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