Electromagnetic Field Theory A magnetic vector potential is given by the expression A = (- cos x) (cos y) uz. The flux density at the origin is – 2 ux. 2 ux. – uy. 0. – 2 ux. 2 ux. – uy. 0. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of this statement is not characteristic of a static magnetic field it has no sink or sources. magnetic flux lines are always closed. it is solenoidal. it is conservative. it has no sink or sources. magnetic flux lines are always closed. it is solenoidal. it is conservative. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The energy stored in the magnetic field in a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying a current at 10 amp, is 1.15 joule. 0.015 joule. 0.15 joule. 0.015 joule. 1.15 joule. 0.015 joule. 0.15 joule. 0.015 joule. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by 4t3. 12t. 12t3. 24t. 4t3. 12t. 12t3. 24t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory If the resistance of a conductor does not vary in accordance with the Ohms law it is known as reverse conductor. non - linear conductor. bad conductor. non - conductor. reverse conductor. non - linear conductor. bad conductor. non - conductor. 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. Zero. abω Bo sinω t. ab Bo cosω t. Bo ω sinω t. Zero. abω Bo sinω t. ab Bo cosω t. ANSWER DOWNLOAD EXAMIANS APP
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