NEETS module 10 ch4 Questions With Complete Solutions
a complete antenna system consists of which of the following
components Correct Answer a feeder line, a coupling device,
and an antenna
a corner reflector antenna is used for which of the following
purposes Correct Answer to produce a unidirectional pattern
a device used to radiate or receive electromagnetic wave energy
is referred to as a/an Correct Answer antenna
a flashlight is an example of what type of radiator Correct
Answer anisotropic radiator
a folded dipole can be used instead of a simple, center-fed dipole
for which of the following purposes Correct Answer matching
impedance
a method of feeding energy to a half wave antenna is to connect
one end through a capacitor to the output stage. what is this
method of feeding called Correct Answer both 1 and 2 above
-end feed
-voltage feed
a radiating source that radiates energy equally in all directions is
known as what type of radiator Correct Answer isotropic
radiator
,a radiating source that radiates energy stronger in one direction
than another is known as what type of radiator Correct Answer
anisotropic radiator
a rhombic antenna has which of the following advantages
Correct Answer each of the above
-simple construction
-wide frequency range
-noncritical adjustment
a rhombic antenna is essentially a combination of which of the
following antennas Correct Answer two v antennas placed
side by side
a series of conductors arranged in a radial pattern and buried in
the ground beneath the antenna is referred to as a Correct
Answer ground screen
a unidirectional pattern can be obtained from an end-fire array
by using what phase relationship between the energy fed to
adjacent elements Correct Answer 90 degrees
a vertically mounted transmission line is LEAST affected by
which of the following antenna radiation patterns Correct
Answer horizontally polarized
adding more elements to a colinear antenna array produces
which of the following effects Correct Answer increased gain
, an antenna that can be mounted to radiate rf energy either
vertically or horizontally is classified as which of the following
types Correct Answer hertz
an antenna which is designed for vertically-polarize ground
waves at low frequencies is the.. Correct Answer beverage
antenna
an antenna with which of the following radiation resistance
values will exhibit reduced efficiency Correct Answer 39
ohms
an electric field that rotates as it travel through space exhibits
what type of polarization Correct Answer elliptical
an end-fire array physically resembles the collinear array except
that it is more compact. what disadvantage does the end-fire
array possess Correct Answer it has low radiation resistance
an isotropic radiator radiates energy in which of the following
patterns Correct Answer omnidirectional
an ordinary flashlight is an example of what type of radiator
Correct Answer anisotropic
as the spacing between elements in a broadside array increases,
what is the effect on the major lobes Correct Answer they
sharpen
a complete antenna system consists of which of the following
components Correct Answer a feeder line, a coupling device,
and an antenna
a corner reflector antenna is used for which of the following
purposes Correct Answer to produce a unidirectional pattern
a device used to radiate or receive electromagnetic wave energy
is referred to as a/an Correct Answer antenna
a flashlight is an example of what type of radiator Correct
Answer anisotropic radiator
a folded dipole can be used instead of a simple, center-fed dipole
for which of the following purposes Correct Answer matching
impedance
a method of feeding energy to a half wave antenna is to connect
one end through a capacitor to the output stage. what is this
method of feeding called Correct Answer both 1 and 2 above
-end feed
-voltage feed
a radiating source that radiates energy equally in all directions is
known as what type of radiator Correct Answer isotropic
radiator
,a radiating source that radiates energy stronger in one direction
than another is known as what type of radiator Correct Answer
anisotropic radiator
a rhombic antenna has which of the following advantages
Correct Answer each of the above
-simple construction
-wide frequency range
-noncritical adjustment
a rhombic antenna is essentially a combination of which of the
following antennas Correct Answer two v antennas placed
side by side
a series of conductors arranged in a radial pattern and buried in
the ground beneath the antenna is referred to as a Correct
Answer ground screen
a unidirectional pattern can be obtained from an end-fire array
by using what phase relationship between the energy fed to
adjacent elements Correct Answer 90 degrees
a vertically mounted transmission line is LEAST affected by
which of the following antenna radiation patterns Correct
Answer horizontally polarized
adding more elements to a colinear antenna array produces
which of the following effects Correct Answer increased gain
, an antenna that can be mounted to radiate rf energy either
vertically or horizontally is classified as which of the following
types Correct Answer hertz
an antenna which is designed for vertically-polarize ground
waves at low frequencies is the.. Correct Answer beverage
antenna
an antenna with which of the following radiation resistance
values will exhibit reduced efficiency Correct Answer 39
ohms
an electric field that rotates as it travel through space exhibits
what type of polarization Correct Answer elliptical
an end-fire array physically resembles the collinear array except
that it is more compact. what disadvantage does the end-fire
array possess Correct Answer it has low radiation resistance
an isotropic radiator radiates energy in which of the following
patterns Correct Answer omnidirectional
an ordinary flashlight is an example of what type of radiator
Correct Answer anisotropic
as the spacing between elements in a broadside array increases,
what is the effect on the major lobes Correct Answer they
sharpen
