ATT Week 12 Exam UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
___ _________ Provides bearing, range, elevation, and velocity - correct answer rf energy
What is reflected rf energy called? - correct answer echo
Los, what is the length of it called? - correct answer range
What is the primary factor affecting radar accuracy? - correct answer resolution
Is there doppler on a stationary syst? - correct answer no
Two obj at same range must be sept by at least ______ beam width to distinguish between two close
together objects. - correct answer one
Rate at which a modulator turns on\off determines _______ - correct answer prf
A pulse radar depends on the ___________ for timing. - correct answer synchronizer
Most commonly used reference level in the db measurement syst is _______. - correct answer 1
mili watt
Purpose of the afc circuit is to compensate for ___________________. - correct answer drift
and age of components.
Frequency of the cw radar rf energy __________ as it reflects off an outbound object. - correct
answer decreases
, Cw radars that use a single antenna and ferrite circulator duplexer are limited to
_______________________. - correct answer low power because of the high transmitter to
receiver leakage.
__________________ is disturbed inducatnce and capacitance of the line. - correct
answer characteristic impedence
Types of transmission line losses: - correct answer resistive, capacitive, inductive
Copper loss - correct answer signal loss due to resistance in long lines
Skin effect - correct answer due to high frequency current flowing near the outer surface of the
conductor
Dielectric loss(leakage) - correct answer due to capacitance formed between transmission lines
Induction loss - correct answer due to the expansion and collapse magnetic field induce voltage
and current in surfaces near the transmission lines
What is a wave guide? - correct answer special type of transmission line that handles power at
microwave rf frequencies.
System of material boundaries capable of guiding electromagnetic energy.
How is em energy produced? - correct answer by current flowing through a conductor
Types of waveguides - correct answer eliptical, rectangular, circular
What does the a dimension of a waveguide determine? - correct answer the frequency range the
waveguide can handle.
QUESTIONS AND CORRECT ANSWERS
___ _________ Provides bearing, range, elevation, and velocity - correct answer rf energy
What is reflected rf energy called? - correct answer echo
Los, what is the length of it called? - correct answer range
What is the primary factor affecting radar accuracy? - correct answer resolution
Is there doppler on a stationary syst? - correct answer no
Two obj at same range must be sept by at least ______ beam width to distinguish between two close
together objects. - correct answer one
Rate at which a modulator turns on\off determines _______ - correct answer prf
A pulse radar depends on the ___________ for timing. - correct answer synchronizer
Most commonly used reference level in the db measurement syst is _______. - correct answer 1
mili watt
Purpose of the afc circuit is to compensate for ___________________. - correct answer drift
and age of components.
Frequency of the cw radar rf energy __________ as it reflects off an outbound object. - correct
answer decreases
, Cw radars that use a single antenna and ferrite circulator duplexer are limited to
_______________________. - correct answer low power because of the high transmitter to
receiver leakage.
__________________ is disturbed inducatnce and capacitance of the line. - correct
answer characteristic impedence
Types of transmission line losses: - correct answer resistive, capacitive, inductive
Copper loss - correct answer signal loss due to resistance in long lines
Skin effect - correct answer due to high frequency current flowing near the outer surface of the
conductor
Dielectric loss(leakage) - correct answer due to capacitance formed between transmission lines
Induction loss - correct answer due to the expansion and collapse magnetic field induce voltage
and current in surfaces near the transmission lines
What is a wave guide? - correct answer special type of transmission line that handles power at
microwave rf frequencies.
System of material boundaries capable of guiding electromagnetic energy.
How is em energy produced? - correct answer by current flowing through a conductor
Types of waveguides - correct answer eliptical, rectangular, circular
What does the a dimension of a waveguide determine? - correct answer the frequency range the
waveguide can handle.
