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 µH. 113.04 µH. 113.04 mH. 37.68 mH. 37.68 µH. 113.04 µH. 113.04 mH. 37.68 mH. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The lagging of flux density behind the applied magnetising force is known as All of these permeance. flux. hysteresis. All of these permeance. flux. hysteresis. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of the following represents ohms law J = σE V = RI I = GV All of these J = σE V = RI I = GV All of these 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? Rain drops may not collect Charge per unit area becomes very high for lightening to discharge Dust particles may not accumulate None of these Rain drops may not collect Charge per unit area becomes very high for lightening to discharge Dust particles may not accumulate None of these 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 Bo ω sinω t. ab Bo cosω t. Zero. abω Bo sinω t. Bo ω sinω t. ab Bo cosω t. Zero. abω Bo sinω t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The skip distance is the maximum distance upto which ionospheric reflection is possible. False True False True ANSWER DOWNLOAD EXAMIANS APP
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