Electromagnetic Field Theory The heating time constant of an electrical machine gives an indication of its short time rating. rating. cooling. overload capacity. short time rating. rating. cooling. overload capacity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A plane wave magnetic field is represented by Bx = cos(y – ct). The electric and magnetic fields will be zero in the direction Ex = Ey = 0, By = Bz = 0. Ex = Ey = 0, Bx = By = 0. None of these. Ey = Ez = 0, By = Bz = 0. Ex = Ey = 0, By = Bz = 0. Ex = Ey = 0, Bx = By = 0. None of these. Ey = Ez = 0, By = Bz = 0. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The divergence of a vector is a scalar, while the curl of a vector is another Unit vector Scalar None of these Vector Unit vector Scalar None of these Vector 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. 145. 225. 250. 150. 145. 225. 250. 150. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A potential field is given by V = 3x2 y – yz. The electric field at P(2, -1, 4) is 12 Ix - Iz V/m. 12 Ix + 8 Iy + Iz V/m. 12 Ix - 8 Iy - Iz V/m. 12 Ix - 8 Iy V/m. 12 Ix - Iz V/m. 12 Ix + 8 Iy + Iz V/m. 12 Ix - 8 Iy - Iz V/m. 12 Ix - 8 Iy V/m. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Midway between two equal and similar charges, a third equal and similar charge is placed, then this third charge will not be equilibrium. remain in stable equilibrium. be in unstable equilibrium. will move out of the field of influence of two charges. not be equilibrium. remain in stable equilibrium. be in unstable equilibrium. will move out of the field of influence of two charges. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS