Search
.Management Sciences
Category: Electromagnetic Induction
Self inductance of a coil depends upon________________?
0
A. current flowing
B. number of turns per unit length
C. voltage produce
D. all
A.C can not be used for_______________?
A. producing heat
B. producing light
C. Magnetizing iron
D. Producing magnetic field
The magnitude of the induced e.m.f. in a conductor depends on the______________?
A. flux density of the magnetic field
B. amount of flux cut
C. amount of flux linkages
D. rate of change of flux-linkages
A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is___________?
A. 3500 mH
B. 350 mH
C. 250 mH
D. 150 mH
The property of coil by which a counter e.m.f. is induced in it when the current through the coil changes is known as__________?
A. self-inductance
B. mutual inductance
C. series aiding inductance
D. capacitance
An e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be______________?
A. 64 A/s
B. 32 A/s
C. 16 A/s
D. 4 A/s
The law that the induced e.m.f. and current always oppose the cause producing them is due to____________?
A. Faraday
B. Lenz
C. Newton
D. Coulomb
Two 300 uH coils in series without mutual coupling have a total inductance of___________?
A. 300 uH
B. 600 uH
C. 150 uH
D. 75 uH
Recent Comments