Waveguide are used mainly for microwave signals because

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Waveguide are used mainly for microwave signals because They would be too bulky at lower frequencies.

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Description : In RF and microwave system, what instrument is used to measure the incidental and reflected signals?

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What typesAdvances of circular waveguide?

Description : What typesAdvances of circular waveguide?

Last Answer : Need answer

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Proposed the use of clad glass fiber as a dielectric waveguide a. Karpon and Keck b. Karpon and Bockham c. Bockham and Kao d. Kao and Keck

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What device in a waveguide system used for stopping or diverting electromagnetic wave as desired? A. Mechanical switch B. Electric switch C. Push-button switch D. Waveguide switch

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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 is not a bounded medium? A. Coaxial line B. Two-wire line C. Waveguide D. Free space

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Best reason for pressurizing waveguides with dry air A. To maintain propagation B. To maintain temperature of the waveguide C. To reduce the possibility of internal arcing D. To increase the speed of propagation

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When electromagnetic wave are propagated through a waveguide, they A. are reflected from the walls but do not travel along them B. travel along all four walls of the waveguide C. travel along the broader walls of the guide D. travel through the dielectric without touching the walls

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Proposed the use of a clad glass fiber as a dielectric waveguide. A. Kao and Keck B. Karpon and Keck C. Karpon and Bockham D. Bockham and Kao

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The power of a wave in a cylindrical waveguide of radius 2m with electric field 12 units is a) 2.39 b) 3.92 c) 9.23 d) 9.32

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An example for lossless propagation is a) Dielectric waveguide propagation b) Conductor propagation c) Cavity resonator propagation d) It is not possible

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Choose which of following condition is not required for a waveguide to exist. a) The dimensions should be in accordance with desired frequency b) Cut-off frequency should be minimum 6GHz c) The shape should be spherical d) No specific condition is required for waveguide design

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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?

Last Answer : . Dominant mode

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.