Electromagnetic Field Theory Parabolic and lens antenna used at Microwave frequency Low frequency Medium frequency High frequency Microwave frequency Low frequency Medium frequency High frequency ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In an iron core coil the iron core is removed so that the coil becomes an air core coil. The inductance of the coil will decrease. initially increase and then decrease. increase. remain the same. decrease. initially increase and then decrease. increase. remain the same. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The current of 3 A will be 113.04 mH. 113.04 µH. 37.68 mH. 37.68 µH. 113.04 mH. 113.04 µH. 37.68 mH. 37.68 µH. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory If n is the polarization vector and k is the direction of propagation plane electromagnetic wave, then n = K. n × k = 0. n. k = 0. n = - k. n = K. n × k = 0. n. k = 0. n = - k. 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. 30 joules. 12 joules. 24 joules. 15 joules. 30 joules. 12 joules. 24 joules. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of this statement is not characteristic of a static magnetic field it is conservative. it has no sink or sources. magnetic flux lines are always closed. it is solenoidal. it is conservative. it has no sink or sources. magnetic flux lines are always closed. it is solenoidal. ANSWER DOWNLOAD EXAMIANS APP
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