Electromagnetic Field Theory A medium is said to be isotropic when ∈ is zero. ∈ is a scalar constant. ∈ = μ. ∈ = μσ. ∈ is zero. ∈ is a scalar constant. ∈ = μ. ∈ = μσ. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A Yagi antenna has a driven antenna With a reflector Only With one or more directors With a reflector and one or more directors With a reflector Only With one or more directors With a reflector and one or more directors ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An emf of 16 volts is induced in a coil of inductance 4 H. The rate of change of current must be 64 A / s. 32 A / s. 4 A / s. 16 A / s. 64 A / s. 32 A / s. 4 A / s. 16 A / s. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The energy stored in the magnetic field in a solenoid 10 cm long and 4 cm diameter wound with 2000 turns of wire carrying a current at 20 amp, is 15 joules. 12 joules. 24 joules. 30 joules. 15 joules. 12 joules. 24 joules. 30 joules. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as None of these Transmission efficiency Loss coefficient Front to back ratio None of these Transmission efficiency Loss coefficient Front to back ratio ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The coils having self inductance of 10 mH and 15 mH have an effective inductance of 40 mH, when connected in series aiding. What will be the equivalent inductance if we connect then in series opposing? 0 mH. 10 mH. 5 mH. 20 mH. 0 mH. 10 mH. 5 mH. 20 mH. ANSWER DOWNLOAD EXAMIANS APP
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