Electromagnetic Field Theory Two coils are coupled in such a way that the mutual inductance between them is 20 mH. If the inductances of the coils are 40 mH and 50 mH respectively, the coefficient of coupling is 0.477. 0.01. 0.577. 0.447. 0.477. 0.01. 0.577. 0.447. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A magnetic field B = 5 × 10-2 uz T exerts a force on 0.02 m conductor along the x-axis. The conductor carried a current of 5 mA in the – ux direction. What force must be applied to the conductor to hold it in position 5 × 10-5 uz N. 5 × 10-5 uy N. - 5 × 10-5 uy N. 5 × 10-5 ux N. 5 × 10-5 uz N. 5 × 10-5 uy N. - 5 × 10-5 uy N. 5 × 10-5 ux N. 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 8.4 mm. 10 mm. 4 mm. 2.4 mm. 8.4 mm. 10 mm. 4 mm. 2.4 mm. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In case of surface waves the field strength at a point is directly proportional to Antenna height Distance of the point from the antenna Wave frequency Current of the antenna Antenna height Distance of the point from the antenna Wave frequency Current of the antenna ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory As a result of reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the phase velocity. velocity of propagation. group velocity. normal velocity. phase velocity. velocity of propagation. group velocity. normal velocity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Find H for centre of solenoid having finite length d = 1 unit where N = no of turns = 500, I = 2 A. 1000. None of these. 100. 500. 1000. None of these. 100. 500. ANSWER DOWNLOAD EXAMIANS APP
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