Electromagnetic Field Theory Parabolic and lens antenna used at High frequency Microwave frequency Low frequency Medium frequency High frequency Microwave frequency Low frequency Medium frequency ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A Yagi antenna has a driven antenna With one or more directors Only With a reflector and one or more directors With a reflector With one or more directors Only With a reflector and one or more directors With a reflector ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A solid sphere made of insulating material has a radius R and has a total charge Q distributed uniformly in its volume. What is the magnitude of electric field intensity, E, at a distance r (o less than r less than R) inside the sphere QR/(4π εo r3). Q/(4 π εo r3). Qr/(4 π εo R3). 3 Qr/(4 π εo R3). QR/(4π εo r3). Q/(4 π εo r3). Qr/(4 π εo R3). 3 Qr/(4 π εo R3). ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The core of coil length is 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be 48 mH. 24 mH. 3 mH. 12 mH. 48 mH. 24 mH. 3 mH. 12 mH. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A medium is said to be isotropic when ∈ = μ. ∈ is a scalar constant. ∈ is zero. ∈ = μσ. ∈ = μ. ∈ is a scalar constant. ∈ is zero. ∈ = μσ. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Radiation intensity in a given direction is the Energy radiated per square metre Power radiated per square metre Power radiated per unit solid angle in that direction None of these Energy radiated per square metre Power radiated per square metre Power radiated per unit solid angle in that direction None of these ANSWER DOWNLOAD EXAMIANS APP
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