Electromagnetic Field Theory A Yagi antenna has a driven antenna With a reflector With a reflector and one or more directors Only With one or more directors With a reflector With a reflector and one or more directors Only With one or more directors ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The energy stored in the magnetic field at a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying an current at 10 A, is 0.5 J. 0.15 J. 1.15 J. 0.015 J. 0.5 J. 0.15 J. 1.15 J. 0.015 J. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The force required to seperate two surfaces with a contact area measuring 5 cm by 6 cm, when flux density normal to the surface is 0.8 tesla, will be 764 N. 76.4 N. 7640 N. 76400 N. 764 N. 76.4 N. 7640 N. 76400 N. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The frequency range for satellite communication is 3 to 30 kHz 30000 to 300000 MHz 3000 to 30000 MHz 300 to 3000 kHz 3 to 30 kHz 30000 to 300000 MHz 3000 to 30000 MHz 300 to 3000 kHz ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0. No Yes No Yes ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two straight parallel conductors carry equal currents in opposite direction. The force between them is attractive. repulsive. none of above. zero. attractive. repulsive. none of above. zero. ANSWER DOWNLOAD EXAMIANS APP
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