Electromagnetic Field Theory A point pole has a strength of 4π × 10-4 weber. The force in newtons on a point pole of 4π × 1.5 × 10-4 weber placed at a distance of 10 cm from it will be 20 N. 3.75 N. 15 N. 7.5 N. 20 N. 3.75 N. 15 N. 7.5 N. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The main disadvantage of the two-hole directional coupler is High standing wave ratio Low directional coupling Narrow bandwidth Poor directivity High standing wave ratio Low directional coupling Narrow bandwidth Poor directivity ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two identical circular coils, one closed and another is little split (not enclosed) are placed in an uniform magnetic field which decrease at a constant rate. If the plane to the coils are perpendicular to the field which of the following statements is true? Joule heating does not occur in each of the coils. An emf is induced in split coil. An emf is induced in both coils. Equal joule heating occurs in both coils. Joule heating does not occur in each of the coils. An emf is induced in split coil. An emf is induced in both coils. Equal joule heating occurs in both coils. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The magnetic vector potential due to a single conductor carrying current is zero. finite. infinite. none of tha above. zero. finite. infinite. none of tha above. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The effective reactance of an inductive coil none of these. decreases because of stray capacitance as the frequency increases. increases because of stray capacitance as the frequency increases. remains same irrespective of the frequency. none of these. decreases because of stray capacitance as the frequency increases. increases because of stray capacitance as the frequency increases. remains same irrespective of the frequency. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Due to which of the following reasons a lightning conductor on top of a building is made into a pointed spike? Charge per unit area becomes very high for lightening to discharge Rain drops may not collect None of these Dust particles may not accumulate Charge per unit area becomes very high for lightening to discharge Rain drops may not collect None of these Dust particles may not accumulate ANSWER DOWNLOAD EXAMIANS APP
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