Electromagnetic Field Theory The principle of dynamically induced emf is utilized in a choke. transformer. generator. thermocouple. choke. transformer. generator. thermocouple. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Tropospheric scatter is used with frequencies in the HF VLF UHF VHF HF VLF UHF VHF 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 – uy. – 2 ux. 2 ux. 0. – uy. – 2 ux. 2 ux. 0. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The magnetic field required to reduce the residual magnetism to zero is called Retentivity. Saturation magnetism. Coercivity. Hysteresis. Retentivity. Saturation magnetism. Coercivity. Hysteresis. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Materials subjected to rapid reversals of magnetism should have low permeability. high permeability. both a and b. low hysteresis loss. low permeability. high permeability. both a and b. low hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A medium is said to be isotropic when ∈ is a scalar constant. ∈ = μ. ∈ = μσ. ∈ is zero. ∈ is a scalar constant. ∈ = μ. ∈ = μσ. ∈ is zero. ANSWER DOWNLOAD EXAMIANS APP
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