The folded waveguide in a bwo serves the same purpose as what component in a twt?

The folded waveguide in a bwo serves the same purpose  as what component in a twt?
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1 Answer

Answer :

Helix.
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Related questions

The magnet surrounding the body of a twt serves what purpose?

Description : The magnet surrounding the body of a twt serves what purpose?

Last Answer : Used to focus the electrons into a tight beam.

What structure in the twt delays the forward progress of the traveling wave?

Description : What structure in the twt delays the forward progress of the traveling wave?

Last Answer : The helix.

What relationship must exist between the electron beam and the traveling wave for bunching to occur in the electron beam of a twt?

Description : What relationship must exist between the electron beam and the traveling wave for bunching to occur in the electron beam of a twt?

Last Answer : The traveling wave must have a forward velocity equal to or less than the speed of the electrons in the beam.

How are the input and output directional couplers in a twt connected to the helix?

Description : How are the input and output directional couplers in a twt connected to the helix?

Last Answer : The directional couplers are not physically connected to the helix.

What is the primary use of the twt?

Description : What is the primary use of the twt?

Last Answer : Voltage amplification.

The base of a transistor serves a purpose similar to what element of the FET

Description : The base of a transistor serves a purpose similar to what element of the FET

Last Answer : Gate.

What is the most likely cause of losses in waveguide systems?

Description : What is the most likely cause of losses in waveguide systems?

Last Answer : Improperly connected joints or damaged inner surface.

What is the most common type of waveguide joint?

Description : What is the most common type of waveguide joint?

Last Answer : Choke joint.

A waveguide bend must have what minimum radius?

Description : A waveguide bend must have what minimum radius?

Last Answer : Greater than 2 wavelengths.

What is the result of an abrupt change in the size, shape, or dielectric of a waveguide?

Description : What is the result of an abrupt change in the size, shape, or dielectric of a waveguide?

Last Answer : Reflections.

When a waveguide is terminated in a resistive load, the load must be matched to what property of the waveguide?

Description : When a waveguide is terminated in a resistive load, the load must be matched to what property of the waveguide?

Last Answer : . Characteristic impedance.

What device is used to produce a gradual change in impedance at the end of a waveguide?

Description : What device is used to produce a gradual change in impedance at the end of a waveguide?

Last Answer : Horn.

What is the result of an impedance mismatch in a waveguide?

Description : What is the result of an impedance mismatch in a waveguide?

Last Answer : Standing waves that cause power losses, a reduction in power handling capability, and an increase in frequency and sensitivity.

Loose or inefficient coupling of energy into or out of a waveguide can be accomplished by the use of what method?

Description : Loose or inefficient coupling of energy into or out of a waveguide can be accomplished by the use of what method?

Last Answer : Slots and apertures.

What determines the frequency, bandwidth, and power handling capability of a waveguide probe?

Description : What determines the frequency, bandwidth, and power handling capability of a waveguide probe?

Last Answer : Size and shape

Which subscript, in circular waveguide classification, indicates the number of full-wave patterns around the circumference?

Description : Which subscript, in circular waveguide classification, indicates the number of full-wave patterns around the circumference?

Last Answer : First.

The electric field is perpendicular to the "a" dimension of a waveguide in what mode?

Description : The electric field is perpendicular to the "a" dimension of a waveguide in what mode?

Last Answer : TE.

How is the cutoff wavelength of a circular waveguide figured?

Description : How is the cutoff wavelength of a circular waveguide figured?

Last Answer : 1.71 times the diameter.

What field configuration is easiest to produce in a given waveguide?

Description : What field configuration is easiest to produce in a given waveguide?

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What term is used to identify the forward progress velocity of wavefronts in a waveguide?

Description : What term is used to identify the forward progress velocity of wavefronts in a waveguide?

Last Answer : Group velocity.

incidence and reflection that are perpendicular to the waveguide walls?

Description : incidence and reflection that are perpendicular to the waveguide walls?

Last Answer : Cutoff frequency.

Assuming the wall of a waveguide is perfectly flat, what is the angular relationship between the angle of incidence and the angle of reflection

Description : Assuming the wall of a waveguide is perfectly flat, what is the angular relationship between the angle of incidence and the angle of reflection

Last Answer : The angles are equal.

When a wavefront is radiated into a waveguide, what happens to the portions of the wavefront that do not satisfy the boundary conditions?

Description : When a wavefront is radiated into a waveguide, what happens to the portions of the wavefront that do not satisfy the boundary conditions?

Last Answer : Decrease to zero.

What interaction causes energy to travel down a waveguide?

Description : What interaction causes energy to travel down a waveguide?

Last Answer : The interaction of the electric and magnetic fields.

When the frequency is decreased so that two quarter wavelengths are longer than the "a" (wide) dimension of the waveguide, what will happen?

Description : When the frequency is decreased so that two quarter wavelengths are longer than the "a" (wide) dimension of the waveguide, what will happen?

Last Answer : Energy will no longer pass through the waveguide.

What happens to the bus bar dimensions of the waveguide when the frequency is increased?

Description : What happens to the bus bar dimensions of the waveguide when the frequency is increased?

Last Answer : The bus bar becomes wider.

The frequency range of a waveguide is determined by what dimensions?

Description : The frequency range of a waveguide is determined by what dimensions?

Last Answer : . The "a" dimension.

The large surface area of a waveguide greatly reduces what type of loss that is common in two-wire and coaxial lines?

Description : The large surface area of a waveguide greatly reduces what type of loss that is common in two-wire and coaxial lines?

Last Answer : Copper loss.

How does a waveguide-type lens focus spherical wavefront microwave energy?

Description : How does a waveguide-type lens focus spherical wavefront microwave energy?

Last Answer : Some wavefronts are accelerated so that all wavefronts exit the lens at the same time

Which dispersion mechanism (material or waveguide) is a function of the size of the fiber's core relative to the wavelength of operation?

Description : Which dispersion mechanism (material or waveguide) is a function of the size of the fiber's core relative to the wavelength of operation?

Last Answer : Waveguide dispersion.

Which has a wider frequency range, a simple dipole or a folded dipole?

Description : Which has a wider frequency range, a simple dipole or a folded dipole?

Last Answer : Folded dipole.

A waveguide passive component that brings a smooth change in the direction of axis maintained perpendicular to the plane of polarization? A. L bend B. H bend C. T bend D. X bend

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Which of the following types of HPA is not used in earth stations? A. TWT B. Transistor C. Klystron D. Magnetron

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Collects very weak signals from a broadcast satellite A. Helical antenna B. Satellite dish C. LNA D. TWT

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Draw labelled sketch of TWT and give its two applications.

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TWT is basically a(n)

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