Electromagnetic Field Theory Due to which of the following reasons a lightning conductor on top of a building is made into a pointed spike? Charge per unit area becomes very high for lightening to discharge None of these Rain drops may not collect Dust particles may not accumulate Charge per unit area becomes very high for lightening to discharge None of these Rain drops may not collect Dust particles may not accumulate ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A point charge in space is attracted towards a dielectric material because of the maximisation of electrostatic flux. all of above. phenomenon of dielectric polarisation. dielectric hysteresis. maximisation of electrostatic flux. all of above. phenomenon of dielectric polarisation. dielectric hysteresis. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A square corner reflector is used in which of the following? Point-to-point communication Radio astronomy All of these TV broadcast Point-to-point communication Radio astronomy All of these TV broadcast ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The developed electromagnetic force and or torque in electromechanical energy conversion system act in a direction that tends to decrease the stored energy at constant flux. to increase the stored energy at constant flux. to decrease the co-energy at constant mmf. to decrease the stored energy at constant mmf. to decrease the stored energy at constant flux. to increase the stored energy at constant flux. to decrease the co-energy at constant mmf. to decrease the stored energy at constant mmf. 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 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). QR/(4π εo r3). ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Conductor is varying and field is fixed then emf will be induced. This principle is called None of these static induced emf. both A and B. dynamically induced emf. None of these static induced emf. both A and B. dynamically induced emf. ANSWER DOWNLOAD EXAMIANS APP
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