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Electromagnetic-theory Questions Set 51:

Quiz Mode

A dielectric has a frequency of 32 × 10⁵ Hz in air. Calculate the phase constant.

0.01

0.02

0.1

0.2

Solution:

If a soap bubble is given a negative charge, its radius will:

Increase.

Decrease.

Remain unchanged.

Fluctuate.

Solution:

In case of all flux from the current in coil 1 linking with coil 2, the coefficient of coupling will be __________

2.0

1.0

0.5

Solution:

What is called a resistor if a transmitter is connected to a resistor instead of an antenna?

a test load

a temporary load

a dummy load

a heavy load

Solution:

The self inductances of the two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is ___ mH

Solution:

The half-power beamwidth (HPBW) of an antenna is calculated above what value for an electric field-based radiation plot?

0.707

1.414

0.5

Cannot be determined

Solution:

The kinetic energy of an electron is equal to 1.6 eV (electron volts). Find the velocity of the electron.

7.5 x 10⁵ m/s

5.62 x 10⁵ m/s

3 x 10⁵ m/s

1.6 x 10⁵ m/s

Solution:

Michael Faraday suggested that the electric field should be imagined to be divided into tubes of force containing a fixed number of lines of force.

Kelvin

Faraday

Newton

All of the above

Solution:

As a result of reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the

velocity of propagation

normal velocity

group velocity

phase velocity

Solution:

If the shunt field circuit of a DC shunt motor operating at no load suddenly opens, what will happen?

Nothing will happen to the motor.

This will make the armature take heavy current, possibly burning it.

The motor will run at a very slow speed.

This will result in excessive speed, possibly destroying the armature due to excessive centrifugal stresses.

Electromagnetic-theory Questions Set 51:

A dielectric has a frequency of 32 × 10⁵ Hz in air. Calculate the phase constant.

Solution:

If a soap bubble is given a negative charge, its radius will:

Solution:

In case of all flux from the current in coil 1 linking with coil 2, the coefficient of coupling will be __________

Solution:

What is called a resistor if a transmitter is connected to a resistor instead of an antenna?

Solution:

The self inductances of the two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is ___ mH

Solution:

The half-power beamwidth (HPBW) of an antenna is calculated above what value for an electric field-based radiation plot?

Solution:

The kinetic energy of an electron is equal to 1.6 eV (electron volts). Find the velocity of the electron.

Solution:

Michael Faraday suggested that the electric field should be imagined to be divided into tubes of force containing a fixed number of lines of force.

Solution:

As a result of reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the

Solution:

If the shunt field circuit of a DC shunt motor operating at no load suddenly opens, what will happen?

Solution:

Related Question Sets:

Related Topics:

Electromagnetic-theory Questions Set 51:

A dielectric has a frequency of 32 × 105 Hz in air. Calculate the phase constant.

Solution:

If a soap bubble is given a negative charge, its radius will:

Solution:

In case of all flux from the current in coil 1 linking with coil 2, the coefficient of coupling will be __________

Solution:

What is called a resistor if a transmitter is connected to a resistor instead of an antenna?

Solution:

The self inductances of the two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is ___ mH

Solution:

The half-power beamwidth (HPBW) of an antenna is calculated above what value for an electric field-based radiation plot?

Solution:

The kinetic energy of an electron is equal to 1.6 eV (electron volts). Find the velocity of the electron.

Solution:

Michael Faraday suggested that the electric field should be imagined to be divided into tubes of force containing a fixed number of lines of force.

Solution:

As a result of reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the

Solution:

If the shunt field circuit of a DC shunt motor operating at no load suddenly opens, what will happen?

Solution:

Related Question Sets:

Related Topics:

A dielectric has a frequency of 32 × 10⁵ Hz in air. Calculate the phase constant.