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The important postulate arising out of Maxwell’s modification of Ampere’s law is

The important postulate arising out of Maxwell’s modification of Ampere’s law is

The divergence of a vector is a scalar, while the curl of a vector is another

The divergence of a vector is a scalar, while the curl of a vector is another

What will happen to a bird sitting on a conductor?

What will happen to a bird sitting on a conductor?

Which of the following does not characterize a ferromagnetic material?

Which of the following does not characterize a ferromagnetic material?

One volt equals

One volt equals

The direction of vectors gives the direction of propagation of electromagnetic waves

The direction of vectors gives the direction of propagation of electromagnetic waves

Δ2V = – r/E is known as __________ equation

Δ2V = – r/E is known as __________ equation

A medium is said to be isotropic when

A medium is said to be isotropic when

The absorption of radio waves by atmosphere depends on

The absorption of radio waves by atmosphere depends on

Electric lines of force do not cross each other because

Electric lines of force do not cross each other because

Poynting vector is the rate of energy flow having

Poynting vector is the rate of energy flow having

When a wave is incident from the more dense into a less dense medium at an angle equal to or exceeding the critical angle, the wave suffers total internal __________ .

When a wave is incident from the more dense into a less dense medium at an angle equal to or exceeding the critical angle, the wave suffers total internal __________ .

The wave propagation occurs without attenuation in case of a

The wave propagation occurs without attenuation in case of a

Surface impedance at high frequencies is a consideration for

Surface impedance at high frequencies is a consideration for

An electron (charge -e) is rotating in a circular orbit of radius R, around a proton with charge +e at a constant angular velocity ω. The orbital magnetic dipole moment is

An electron (charge -e) is rotating in a circular orbit of radius R, around a proton with charge +e at a constant angular velocity ω. The orbital magnetic dipole moment is

The polarization of dielectric materials results in

The polarization of dielectric materials results in

An electromagnetic wave incidents on a perfect insulator at an angle. If the wave is not entirely parallel polarized, then

An electromagnetic wave incidents on a perfect insulator at an angle. If the wave is not entirely parallel polarized, then

Which of the following waves do not exist in waveguides?

Which of the following waves do not exist in waveguides?

Which of the following statement is incorrect?

Which of the following statement is incorrect?

For a core having a relative permeability μr, magnetic dipole moment per unit volume M and field strength H, the flux density B is

For a core having a relative permeability μr, magnetic dipole moment per unit volume M and field strength H, the flux density B is

When there is rapid attenuation of field inside the conductor, the field current are concentrated close to the surface of the conductor; this phenomenon is called

When there is rapid attenuation of field inside the conductor, the field current are concentrated close to the surface of the conductor; this phenomenon is called

If ωε is the displacement current factor and s is conduction current density factor then which of the following statements is incorrect?

If ωε is the displacement current factor and s is conduction current density factor then which of the following statements is incorrect?

For a good conducting medium the intrinsic impedance is

For a good conducting medium the intrinsic impedance is

In a perfect conductor the incident and reflected wave combine to produce

In a perfect conductor the incident and reflected wave combine to produce

In a homogeneous magnetic field H of a solenoid, the core carries a magnetic dipole moment M per unit volume equal to

In a homogeneous magnetic field H of a solenoid, the core carries a magnetic dipole moment M per unit volume equal to

The electric intensity for free space is given by

The electric intensity for free space is given by

Brewster angle is the angle for which there is

Brewster angle is the angle for which there is

In waveguides the existing waves are

In waveguides the existing waves are

Intrinsic or characteristic impedance of free space has a value of

Intrinsic or characteristic impedance of free space has a value of

Which of the following statements is incorrect?

Which of the following statements is incorrect?

The useful magnetic flux obtainable from any closed surface is

The useful magnetic flux obtainable from any closed surface is

In a medium if ε, μ and σ are constant throughout the medium, then it is known as

In a medium if ε, μ and σ are constant throughout the medium, then it is known as

When an electromagnetic wave travelling in one medium strikes upon a second medium (having a different conductivity) the wave will be

When an electromagnetic wave travelling in one medium strikes upon a second medium (having a different conductivity) the wave will be

Power gain of an antenna in a given direction is the ratio of

Power gain of an antenna in a given direction is the ratio of

A square corner reflector is used in which of the following?

A square corner reflector is used in which of the following?

For frequencies upto 1650 kHz __________ antenna is used

For frequencies upto 1650 kHz __________ antenna is used

Which of the following is a circularly polarized antenna?

Which of the following is a circularly polarized antenna?

UHF and microwaves in the frequency range 300 MHz to 30 GHz can be best transmitted using __________ propagation

UHF and microwaves in the frequency range 300 MHz to 30 GHz can be best transmitted using __________ propagation

An antenna having a high Q has

An antenna having a high Q has

For a plane good conductor, skin depth varies

For a plane good conductor, skin depth varies