Electromagnetic induction For a purely inductive circuit which of the following is true? Relative power is zero Any capacitance even if present in the circuit will not be charged Actual power of the circuit is zero Apparent power is zero Relative power is zero Any capacitance even if present in the circuit will not be charged Actual power of the circuit is zero Apparent power is zero ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it Lies perpendicular to the magnetic flux Cuts magnetic flux Moves parallel to the direction of the magnetic field Lies in a magnetic field Lies perpendicular to the magnetic flux Cuts magnetic flux Moves parallel to the direction of the magnetic field Lies in a magnetic field 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 be 48 mH 12 mH 3 mH 24 mH 48 mH 12 mH 3 mH 24 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A laminated iron core has reduced eddy-current losses because The laminations are insulated from each other The magnetic flux is concentrated in the air gap of the core The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The magnetic flux is concentrated in the air gap of the core The laminations are stacked vertically More wire can be used with less D.C. resistance in coil ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following is unit of inductance? Ampere turns Weber/metre Ohm Hennry Ampere turns Weber/metre Ohm Hennry ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla 400 N 300 N 100 N 1000 N 400 N 300 N 100 N 1000 N ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS