Electromagnetic Field Theory Electric field intensity (E) at ant point in an electric field is equal to potential gradient. (potential gradient)1/3. (potential gradient)1/2. (potential gradient)2. potential gradient. (potential gradient)1/3. (potential gradient)1/2. (potential gradient)2. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory What is the value of magnetic vector potential due to an infinitesimally small current element, evaluated at infinite distance from it? Infinity. Zero. Depends on strength of current element. Unity. Infinity. Zero. Depends on strength of current element. Unity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The operation of electric generators and motors depend on the intraction between magnetic field and Copper conductors. Commutator. Electric fields. Electric current. Copper conductors. Commutator. Electric fields. Electric current. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory If a and b are the dimensions of waveguide then a = 2b a = 3b a = b a = b/4 a = 2b a = 3b a = b a = b/4 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 ab Bo cosω t. abω Bo sinω t. Zero. Bo ω sinω t. ab Bo cosω t. abω Bo sinω t. Zero. Bo ω sinω t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two coils have inductances L1 = 1200 mH and L2 = 800 mH. They are connected in such a way that flux in the two coils aid each other and inductance is measured to be 2500 mH, then Mutual inductance between the coils is ___________ mH. 150. 250. 225. 145. 150. 250. 225. 145. ANSWER DOWNLOAD EXAMIANS APP
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