Electromagnetic Field Theory A Yagi antenna has a driven antenna With one or more directors With a reflector and one or more directors Only With a reflector With one or more directors With a reflector and one or more directors Only With a reflector ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A loop is rotating about x-axis in a magnetic field, B = BO cos(ω + φ) ay. The voltage in the loop is Due to both rotating and transformer action. Due to transformer only. Zero. Due to rotating only. Due to both rotating and transformer action. Due to transformer only. Zero. Due to rotating only. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory If E is the electric field intensity, then what is the value of divergence of (curl of E)? | E |. Null vector. Zero. E. | E |. Null vector. Zero. E. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The developed electromagnetic force and or torque in electromechanical energy conversion system act in a direction that tends to decrease the co-energy at constant mmf. to decrease the stored energy at constant flux. to decrease the stored energy at constant mmf. to increase the stored energy at constant flux. to decrease the co-energy at constant mmf. to decrease the stored energy at constant flux. to decrease the stored energy at constant mmf. to increase the stored energy at constant flux. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The critical frequency of ‘F’ layer is greater than 30 MHz. False True False True ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A plane wave in a homogeneous medium has E = 50 sin(108t + 2z) uy V/m. What is the direction of wave propagation – y direction. z direction. – z direction. y direction. – y direction. z direction. – z direction. y direction. ANSWER DOWNLOAD EXAMIANS APP
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