Electromagnetic Field Theory A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m2 with a velocity of 50 m/s. The induced emf in the conductor will be 50 V. 150 V. 37.5 V. 75 V. 50 V. 150 V. 37.5 V. 75 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Fleming's right hand rule may be applied to an electric generator to find out the direction of rotor rotation. None of these induced emf. magnetic field. rotor rotation. None of these induced emf. magnetic field. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The magnetic field at any point on the axis of current carrying circular coil will be at an angle 45o with the axis. parallel to axis. zero. perpendicular to axis. at an angle 45o with the axis. parallel to axis. zero. perpendicular to axis. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Mutual inductance between two magnetically coupled coils depends on cross sectional area of their common core. the number of their turns. permeability of core. all of above. cross sectional area of their common core. the number of their turns. permeability of core. all of above. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity equal to that of disc and in the opposite direction. less than that of disc and in the same direction. equal to that of disc and in the same direction. less than that of disc but in opposite direction. equal to that of disc and in the opposite direction. less than that of disc and in the same direction. equal to that of disc and in the same direction. less than that of disc but in opposite direction. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A plane wave magnetic field is represented by Bx = cos(y – ct). The electric and magnetic fields will be zero in the direction None of these. Ex = Ey = 0, Bx = By = 0. Ey = Ez = 0, By = Bz = 0. Ex = Ey = 0, By = Bz = 0. None of these. Ex = Ey = 0, Bx = By = 0. Ey = Ez = 0, By = Bz = 0. Ex = Ey = 0, By = Bz = 0. ANSWER DOWNLOAD EXAMIANS APP
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