Electromagnetic Field Theory The right hand rule for determining the direction of the induced EMF was introduced by Faraday Lenz Fleming Maxwell Faraday Lenz Fleming Maxwell ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by ab Bo cosω t. Bo ω sinω t. abω Bo sinω t. Zero. ab Bo cosω t. Bo ω sinω t. abω Bo sinω t. Zero. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The main disadvantage of the two-hole directional coupler is Poor directivity High standing wave ratio Narrow bandwidth Low directional coupling Poor directivity High standing wave ratio Narrow bandwidth Low directional coupling ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In H-plane metal plate lens the travelling wave front is Accelerated Neither accelerated nor retarded Retarded Totally retarded Accelerated Neither accelerated nor retarded Retarded Totally retarded ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The field at any point on the axis of a current carrying coil will be at angle of 45° with the axis. parallel to axis. zero. perpendicular to the axis. at angle of 45° with the axis. parallel to axis. zero. perpendicular to the axis. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory What is the value of skin depth as 100 Hz in a material having μr = 1.0 and & σ = 3.60 × 107 s/m 10 mm. 8.4 mm. 2.4 mm. 4 mm. 10 mm. 8.4 mm. 2.4 mm. 4 mm. ANSWER DOWNLOAD EXAMIANS APP