Electromagnetic Field Theory Due to which of the following reasons a lightning conductor on top of a building is made into a pointed spike? Rain drops may not collect Dust particles may not accumulate None of these Charge per unit area becomes very high for lightening to discharge Rain drops may not collect Dust particles may not accumulate None of these Charge per unit area becomes very high for lightening to discharge ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An inductor designed with 400 turns coil wound on an iron core of 16 cm2 cross sectional area and with a cut of air gap length of 1 mm. The coil is connected to a 230 V, 50 Hz supply. Neglected coil resistance, core loss, iron reluctance and leakage inductance. Find the current in the inductor. 2.28 A. 18.08 A. 9.04 A. 4.56 A. 2.28 A. 18.08 A. 9.04 A. 4.56 A. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which is the major factor for determining whether a medium is free space, lossless dielectric or a good conductor Constitutive parameters. Attenuation constant. Reflector coefficient. Loss tangent. Constitutive parameters. Attenuation constant. Reflector coefficient. Loss tangent. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A wire 1 m long carries a current of 5A and is at an angle of 30o with B = 1.5 wb/m2. Magnitude of force is 2.5 N. 5 N. 3.75 N. 2 N. 2.5 N. 5 N. 3.75 N. 2 N. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A waveguide operated below cut off frequency can be used as Phase shifter An attenuator None An isolator Phase shifter An attenuator None An isolator ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of this statement is not characteristic of a static magnetic field it is solenoidal. it is conservative. magnetic flux lines are always closed. it has no sink or sources. it is solenoidal. it is conservative. magnetic flux lines are always closed. it has no sink or sources. ANSWER DOWNLOAD EXAMIANS APP
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