Electromagnetic Field Theory Which of the following statement is correct for divergence of electric and magnetic flux densities? It is zero for the electric flux density. It is zero for the magnetic flux density. These are zero for static densities but non zero for time varying densities. Both are zero. It is zero for the electric flux density. It is zero for the magnetic flux density. These are zero for static densities but non zero for time varying densities. Both are zero. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A circular ring is carrying uniformly distributed charge q and a point charge – Q on the axis of the ring. The magnitude of dipole moment of the charge system is (Assume distance between centre of ring and point charge is d and radius of ring R) QR. QR2/d. QD. Q√(R2 + d2). QR. QR2/d. QD. Q√(R2 + d2). ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that the above statement is false. the inductor is non linear. the inductor has ferrite core. the inductor is made of thin wire. the above statement is false. the inductor is non linear. the inductor has ferrite core. the inductor is made of thin wire. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The principle of dynamically induced emf is utilized in a choke. thermocouple. transformer. generator. choke. thermocouple. transformer. generator. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The coils having self inductance of 10 mH and 15 mH have an effective inductance of 40 mH, when connected in series aiding. What will be the equivalent inductance if we connect then in series opposing? 10 mH. 20 mH. 0 mH. 5 mH. 10 mH. 20 mH. 0 mH. 5 mH. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The skip distance is the maximum distance upto which ionospheric reflection is possible. True False True False ANSWER DOWNLOAD EXAMIANS APP
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