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Electromagnetic-theory Questions Set 86:

Quiz Mode

The fundamental particle in an electromagnetic wave is

Photon

Electron

Phonon

Proton

Solution:

The magnetism left in the iron after the exciting field has been removed is known as

permeance

residual magnetism

susceptance

reluctance

Solution:

The wavelength of 10 centimetres corresponds to the spectrum of which type of electromagnetic radiation?

Infrared rays

Ultraviolet rays

Microwaves

X-rays

Solution:

Which type of DC motor should not be started on no-load?

(a) Series motor

(b) Shunt motor

(d) Differentially compounded motor

Solution:

A medium wave radio transmitter operating at a wavelength of 492 m has a tower antenna of height 24 m. What is the radiation resistance of the antenna?

25 Ω

36.5 Ω

50 Ω

73 Ω

Solution:

The work done in a power transmission is 180 units, and the E and H components are 60 units and 85 units, respectively. Calculate the velocity of propagation.

52.5 m/s

32.64 m/s

28.34 m/s

12.5 m/s

Solution:

What are the cylindrical coordinates (ρ, Φ, z) of a point with rectangular coordinates (x=-3.1, y=2.6, z=-3)?

None of the above

ρ=-3.1, Φ=-39.98, z=4.045

ρ=-4.045, Φ=-2.6, z=-39.98

ρ=4.045, Φ=-39.98, z=-3

Solution:

The potential function of a certain electric field in free space is given by V = 500 (x^2 - y^2). What is the equation of the equipotential surface that passes through the point (2, -1, 3)?

x^2 - y^2 = 5

x^2 - y^2 = 2

x^2 - y^2 = 3

x^2 - y^2 = 4

Solution:

When a steady current flows in a metallic conductor of non-uniform cross-section, the quantity that remains constant along the length of the conductor is:

Drift speed only

Current and drift speed

Current only

Current, electric field, and drift speed

Solution:

An iron ring with a cross-sectional area of 3 cm² and a mean circumference of 15 cm is wound with 250 turns of wire carrying a current of 0.3 A. The relative permeability of the ring is 1500. What is the flux established in the ring?

282.73 μ Weber

28.2 μ Weber

2.82 μ Weber

0.282 μ Weber

Electromagnetic-theory Questions Set 86:

The fundamental particle in an electromagnetic wave is

Solution:

The magnetism left in the iron after the exciting field has been removed is known as

Solution:

The wavelength of 10 centimetres corresponds to the spectrum of which type of electromagnetic radiation?

Solution:

Which type of DC motor should not be started on no-load?

Solution:

A medium wave radio transmitter operating at a wavelength of 492 m has a tower antenna of height 24 m. What is the radiation resistance of the antenna?

Solution:

The work done in a power transmission is 180 units, and the E and H components are 60 units and 85 units, respectively. Calculate the velocity of propagation.

Solution:

What are the cylindrical coordinates (ρ, Φ, z) of a point with rectangular coordinates (x=-3.1, y=2.6, z=-3)?

Solution:

The potential function of a certain electric field in free space is given by V = 500 (x^2 - y^2). What is the equation of the equipotential surface that passes through the point (2, -1, 3)?

Solution:

When a steady current flows in a metallic conductor of non-uniform cross-section, the quantity that remains constant along the length of the conductor is:

Solution:

An iron ring with a cross-sectional area of 3 cm² and a mean circumference of 15 cm is wound with 250 turns of wire carrying a current of 0.3 A. The relative permeability of the ring is 1500. What is the flux established in the ring?

Solution:

Related Question Sets:

Related Topics:

Electromagnetic-theory Questions Set 86:

The fundamental particle in an electromagnetic wave is

Solution:

The magnetism left in the iron after the exciting field has been removed is known as

Solution:

The wavelength of 10 centimetres corresponds to the spectrum of which type of electromagnetic radiation?

Solution:

Which type of DC motor should not be started on no-load?

Solution:

A medium wave radio transmitter operating at a wavelength of 492 m has a tower antenna of height 24 m. What is the radiation resistance of the antenna?

Solution:

The work done in a power transmission is 180 units, and the E and H components are 60 units and 85 units, respectively. Calculate the velocity of propagation.

Solution:

What are the cylindrical coordinates (ρ, Φ, z) of a point with rectangular coordinates (x=-3.1, y=2.6, z=-3)?

Solution:

The potential function of a certain electric field in free space is given by V = 500 (x^2 - y^2). What is the equation of the equipotential surface that passes through the point (2, -1, 3)?

Solution:

When a steady current flows in a metallic conductor of non-uniform cross-section, the quantity that remains constant along the length of the conductor is:

Solution:

An iron ring with a cross-sectional area of 3 cm2 and a mean circumference of 15 cm is wound with 250 turns of wire carrying a current of 0.3 A. The relative permeability of the ring is 1500. What is the flux established in the ring?

Solution:

Related Question Sets:

Related Topics:

An iron ring with a cross-sectional area of 3 cm² and a mean circumference of 15 cm is wound with 250 turns of wire carrying a current of 0.3 A. The relative permeability of the ring is 1500. What is the flux established in the ring?