Electromagnetic Field Theory For a linear electromagnetic circuit, which of the following statement is true? Co-energy is zero. Field energy is lesser than the co-energy. Field energy is greater than the co-energy. Field energy is equal to the co-energy. Co-energy is zero. Field energy is lesser than the co-energy. Field energy is greater than the co-energy. Field energy is equal to the co-energy. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The property of the coil by which a counter emf is induced in it when the current through the coil changes is known as capacitance. mutual inductance. series aiding inductance. self inductance. capacitance. mutual inductance. series aiding inductance. self inductance. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The field at any point on the axis of a current carrying coil will be zero. parallel to axis. at angle of 45° with the axis. perpendicular to the axis. zero. parallel to axis. at angle of 45° with the axis. perpendicular to the axis. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In an inductor current cannot change abruptly. Comment on the statement. False. True partially. Cannot comment. True. False. True partially. Cannot comment. True. ANSWER DOWNLOAD EXAMIANS APP
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 Parabolic and lens antenna used at Low frequency Microwave frequency High frequency Medium frequency Low frequency Microwave frequency High frequency Medium frequency ANSWER DOWNLOAD EXAMIANS APP
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