Electromagnetic Field Theory What is the value of magnetic vector potential due to an infinitesimally small current element, evaluated at infinite distance from it? Unity. Depends on strength of current element. Infinity. Zero. Unity. Depends on strength of current element. Infinity. Zero. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The current of 3 A will be 37.68 mH. 113.04 µH. 37.68 µH. 113.04 mH. 37.68 mH. 113.04 µH. 37.68 µH. 113.04 mH. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In case of surface waves the field strength at a point is directly proportional to Wave frequency Antenna height Current of the antenna Distance of the point from the antenna Wave frequency Antenna height Current of the antenna Distance of the point from the antenna ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory For a line characteristic impedance zo terminated is load zo/3, the reflection coefficient is 1/3. – 1/3. 2/3. – ½. 1/3. – 1/3. 2/3. – ½. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In order to minimize loss due to hysteresis the magnetic material should have large coercivity. high hysteresis coefficient. small B-H loop area. high resistivity. large coercivity. high hysteresis coefficient. small B-H loop area. high resistivity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Skin depth is proportional to √(σ). Permeability. Frequency. 1/√σ. √(σ). Permeability. Frequency. 1/√σ. ANSWER DOWNLOAD EXAMIANS APP
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