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 rotating only. Due to both rotating and transformer action. Zero. Due to transformer only. Due to rotating only. Due to both rotating and transformer action. Zero. Due to transformer only. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The virtual height of an ionospheric layer is __________ true height Equal to No relation Less than Higher than Equal to No relation Less than Higher than ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In frec space E (z,t) = 103 sin(ωt - βz) uy v/m. What is the value of H (z,t) (103/377) sin(ωt - β z)(-ux) A/m. (103/377) cos(ωt - β z)(-ux) A/m. (103/377) sin(ωt - β z)(-uy) A/m. None of above. (103/377) sin(ωt - β z)(-ux) A/m. (103/377) cos(ωt - β z)(-ux) A/m. (103/377) sin(ωt - β z)(-uy) A/m. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by abω Bo sinω t. Bo ω sinω t. Zero. ab Bo cosω t. abω Bo sinω t. Bo ω sinω t. Zero. ab Bo cosω t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory If a and b are the dimensions of waveguide then a = 2b a = 3b a = b a = b/4 a = 2b a = 3b a = b a = b/4 ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of following is true for a purely inductive circuit ? Apparent power of the circuit is zero. Any capacitance even if present in the circuit will not be charged. Actual power of the circuit is zero. Reactive power of the circuit is zero. Apparent power of the circuit is zero. Any capacitance even if present in the circuit will not be charged. Actual power of the circuit is zero. Reactive power of the circuit is zero. ANSWER DOWNLOAD EXAMIANS APP
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