Electromagnetic induction An open coil has Infinite resistance and zero inductance Infinite resistance and normal inductance Zero resistance and inductance Zero resistance and high inductance Infinite resistance and zero inductance Infinite resistance and normal inductance Zero resistance and inductance Zero resistance and high inductance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Air-core coils are practically free from Eddy current losses None of the listed here Both Hysteresis losses & Eddy current losses Hysteresis losses Eddy current losses None of the listed here Both Hysteresis losses & Eddy current losses Hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is 500 ohms 1000 ohms 100 ohms 5000 ohms 500 ohms 1000 ohms 100 ohms 5000 ohms ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The polarity of the induced voltage can be determined by using the left-hand generator rule. No Yes No Yes ANSWER DOWNLOAD EXAMIANS APP
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 24 mH 12 mH 28 mH 3 mH 24 mH 12 mH 28 mH 3 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The coefficient of coupling between two air core coils depends on Mutual inductance and self inductance of two coils Self-inductance of two coils only Mutual inductance between two coils only None of the listed here Mutual inductance and self inductance of two coils Self-inductance of two coils only Mutual inductance between two coils only None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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