3d1x5 Volume 4 (Ure)
Volume 4 for 3D1X5 CDCs
- 1.
For how many nautical miles does the AN/TPS–75 radar set provides information on aircraft?
- A.
60
- B.
120
- C.
240
- D.
360
Correct Answer
C. 240 -
- 2.
What does the antenna pallet for the AN/TPS75 radar contains in the transit configuration?
- A.
Side-lobe reference antenna, rotary joint, and air conditioners
- B.
Side-lobe reference antenna, rotary joint, and IFF/SIF antenna
- C.
Receiver microwave components, radar antenna, and heat exchanger
- D.
Receiver microwave components, radar antenna, and drive components
Correct Answer
D. Receiver microwave components, radar antenna, and drive components -
- 3.
Which term describes the blocking of all or a portion of the radar beam by an obstacle?
- A.
Blocking
- B.
Jamming
- C.
Screening
- D.
Interference
Correct Answer
C. Screening -
- 4.
The maximum degree of ground slope for the AN/TPS75 radar antenna pallet is
- A.
4
- B.
6
- C.
10
- D.
15
Correct Answer
B. 6 -
- 5.
What is the purpose of the truck stabilizers when you mount the AN/TPS–75 antenna in the back of a truck?
- A.
Course level the truck bed
- B.
Fine level the antenna pallet
- C.
Eliminate radiation hazard below truck bed
- D.
Eliminate the effects of the truck suspension system
Correct Answer
D. Eliminate the effects of the truck suspension system -
- 6.
The AN/TPS75 north mark alignment insures that your antenna is oriented to within
- A.
.25 degrees of north
- B.
.5 degrees of north
- C.
1 degree of north
- D.
2 degrees of north
Correct Answer
C. 1 degree of north -
- 7.
When accomplishing the north alignment for the AN/TPS–75, you should place the surveyor’s transit as far from the antenna as possible without exceeding how many feet?
- A.
50
- B.
100
- C.
200
- D.
300
Correct Answer
D. 300 -
- 8.
What is the relationship of the stable local oscillator (STALO) frequency to the transmit frequency in the AN/TPS75 radar?
- A.
STALO is 16 MHz below the transmit frequency
- B.
STALO is 16 MHz above the transmit frequency
- C.
STALO is 32 MHz below the transmit frequency
- D.
STALO is 32 MHz above the transmit frequency
Correct Answer
C. STALO is 32 MHz below the transmit frequency -
- 9.
What type of antenna does the AN/TPS–75 radar set use?
- A.
Reflector
- B.
Phased array
- C.
Slotted waveguide
- D.
Truncated parabolic
Correct Answer
C. Slotted waveguide -
- 10.
The range and azimuth correlation of identification friend or foe (IFF) and AN/TPS75 radar returns is accomplished in the
- A.
Intermediate frequency (IF) receivers
- B.
Post processor
- C.
Signal processor
- D.
Plan position indicator
Correct Answer
B. Post processor -
- 11.
How many modes of communication are provided to the operator in the AN/TPS-75 radar by the communications system?
- A.
4
- B.
5
- C.
6
- D.
7
Correct Answer
B. 5 -
- 12.
How is the radar initialization function in the AN/TPS75 performed?
- A.
Manually by the operator
- B.
Manually at system power-up
- C.
Automatically at system power-up
- D.
Automatically by the radar control panel
Correct Answer
C. Automatically at system power-up -
- 13.
The serial communication interface, part of the radar control function in the AN/TPS75, provides a link between the radar control unit and the
- A.
Six system microprocessors
- B.
Eight system microprocessors
- C.
Multibus and other system units
- D.
MCE interface group (MIG) rack, clutter mapper, and synchronizer
Correct Answer
A. Six system microprocessors -
- 14.
What is the frequency of the master clock signal, provided by the frequency generator to the processor timing generator in the AN/TPS75 radar?
- A.
4 MHz
- B.
8 MHz
- C.
16 MHz
- D.
32 MHz
Correct Answer
D. 32 MHz -
- 15.
What are the pulse repetition time (PRT) modes for the AN/TPS75 radar?
- A.
Fixed, staggered, or burst
- B.
Fixed, staggered, or pulsed
- C.
Selected, controlled, or burst
- D.
Selected, controlled, or pulsed
Correct Answer
A. Fixed, staggered, or burst -
- 16.
How many antenna rotation degrees is the jamming analysis and transmission system (JATS) jump signal generated in the AN/TPS75 radar?
- A.
180
- B.
360
- C.
405
- D.
540
Correct Answer
C. 405 -
- 17.
What two AN/TPS75 circuits are used to produce the high-power, coded, radio frequency (RF) pulse that drives the twystron amplifier?
- A.
Frequency generator and driver
- B.
Video trigger driver and harmonic filter
- C.
Focus coil power supply and filament transformer
- D.
Vacuum pump power supply and automatic sequencer
Correct Answer
A. Frequency generator and driver -
- 18.
What is the coherent oscillator frequency for the AN/TPS75?
- A.
32 MHz
- B.
74 MHz
- C.
93 MHz
- D.
101 MHz
Correct Answer
A. 32 MHz -
- 19.
The radio frequency (RF) signal used to drive the AN/TPS75 twystron is a
- A.
32 MHz CW pulse train
- B.
Single 0.833 usec RF pulse
- C.
13 usec, 6 element, 2-phase encoded pulse
- D.
6.8 usec, 13 element, 4-phase encoded pulse
Correct Answer
D. 6.8 usec, 13 element, 4-phase encoded pulse -
- 20.
What type of amplifier is used in the AN/TPS75 transmitter’s driver circuit?
- A.
Gaussian
- B.
Parametric
- C.
Pulsed traveling wave tubes (TWT)
- D.
Low-noise (LNA)
Correct Answer
C. Pulsed traveling wave tubes (TWT) -
- 21.
The final output of the AN/TPS75 transmitter’s driver circuit is a
- A.
+320 VAC carrier
- B.
+28 volt video pulse
- C.
2.7 kW peak radio frequency (RF) PULSE
- D.
-117 kV modulating pulse
Correct Answer
C. 2.7 kW peak radio frequency (RF) PULSE -
- 22.
What is used as the final power amplifier in the AN/TPS75?
- A.
Traveling wave tubes (TWT)
- B.
Klystron
- C.
Twystron
- D.
Magnetron
Correct Answer
C. Twystron -
- 23.
What AN/TPS-75 circuit ensures the pulse-forming network (PFN) output pulse has the same potential from pulse recurrence time (PRT) to PRT?
- A.
PFN bias reactor
- B.
PFN shunt regulator
- C.
Delta-wye autotransformer
- D.
Delta-wye saturable reactor
Correct Answer
B. PFN shunt regulator -
- 24.
In the AN/TPS-75, which component provides the discharge path for the pulse-forming network (PFN)?
- A.
Charging choke
- B.
PFN bias reactor
- C.
Trigger amplifier
- D.
Delta-wye transformer
Correct Answer
B. PFN bias reactor -
- 25.
What two circuits generate the high-voltage enabling pulse for the AN/TPS75 final power amplifier (FPA)?
- A.
Trigger amplifier and pulse-forming network (PFN)
- B.
Frequency generator and driver
- C.
Video trigger driver and harmonic filter
- D.
Focus coil power supply and filament transformer
Correct Answer
A. Trigger amplifier and pulse-forming network (PFN) -
- 26.
What are the two primary inputs to the AN/TPS-75 final power amplifier (FPA)?
- A.
DC drive pulse and radio frequency (RF) pulse
- B.
RF pulse and focus coil voltage
- C.
DC drive pulse and vacuum pump voltage
- D.
Vacuum pump voltage and focus coil voltage
Correct Answer
A. DC drive pulse and radio frequency (RF) pulse -
- 27.
The focus coil on the AN/TPS75 twystron is positioned around the tube’s
- A.
Grid
- B.
Plate
- C.
Body
- D.
Cathode
Correct Answer
C. Body -
- 28.
One purpose for the AN/TPS75 radiate control interlock network is to
- A.
Ensure a definite turn-on sequence for the transmitter
- B.
Ensure transmitter shutdown in the event of hostile jamming
- C.
Provide automatic control of the transmitter pulse recurrence time (PRT) and frequency
- D.
Reduce the amount of test equipment needed for troubleshooting
Correct Answer
A. Ensure a definite turn-on sequence for the transmitter -
- 29.
What is monitored by the AN/TPS75’s prime power protection circuit?
- A.
AC input power to the radar
- B.
Both 15 volt power supplies
- C.
-117 kV to the final power amplifier
- D.
+28V to the radiate control interlock network
Correct Answer
A. AC input power to the radar -
- 30.
The AN/TPS-75 transmitter coolant system is pressurized to
- A.
10 2 psi
- B.
20 4 psi
- C.
30 6 psi
- D.
40 8 psi
Correct Answer
A. 10 2 psi -
- 31.
The AN/TPS-75 waveguide is pressurized and dehydrated to
- A.
Keep out moisture and prevent arcing
- B.
Provide cooling and keep out moisture
- C.
Prevent arcing and enable high-voltage diplexing
- D.
Provide cooling and enable high-voltage diplexing
Correct Answer
A. Keep out moisture and prevent arcing -
- 32.
What is the pressure range in the AN/TPS-75 waveguide?
- A.
2-7 psi
- B.
7-10 psi
- C.
24-27 psi
- D.
73-100 psi
Correct Answer
C. 24-27 psi -
- 33.
What is used to dehydrate the AN/TPS75 waveguide air?
- A.
Paper filter
- B.
Silica sponge
- C.
Fiberglass filter
- D.
Desiccant canister
Correct Answer
D. Desiccant canister -
- 34.
On the AN/TPS75 antenna, how many of the 48 slotted sticks are used for transmitting?
- A.
12
- B.
22
- C.
36
- D.
48
Correct Answer
B. 22 -
- 35.
What is the height of the AN/TPS-75 antenna’s elevation beam pattern?
- A.
5
- B.
10
- C.
20
- D.
40
Correct Answer
C. 20 -
- 36.
What type of amplifiers are used on the AN/TPS-75 antenna to provide an initial 22 dB gain to the radio frequency (RF) echoes?
- A.
Pulsed traveling wave tubes (TWT)
- B.
Gaussian amplifiers
- C.
Parametric amplifiers
- D.
Low-noise amplifiers (LNA)
Correct Answer
D. Low-noise amplifiers (LNA) -
- 37.
The intermediate frequency (IF) receiver function in the AN/TPS-75 radar converts the radar return signals into
- A.
6-bit digital data
- B.
8-bit digital data
- C.
10-bit digital data
- D.
12-bit digital data
Correct Answer
D. 12-bit digital data -
- 38.
The gain of the AN/TPS-75’s intermediate frequency (IF) receivers is varied dynamically by the analog control signals from the
- A.
Step attenuator
- B.
Frequency generator
- C.
Radar control microprocessor
- D.
Sensitivity time control (STC) interface
Correct Answer
D. Sensitivity time control (STC) interface -
- 39.
The sensitivity time control (STC) in the AN/TPS75 radar functions to
- A.
Reduce false alarms due to short-range clutter
- B.
Increase false alarms due to short-range clutter
- C.
Reduce false alarms due to long-range clutter
- D.
Increase false alarms due to long-range clutter
Correct Answer
A. Reduce false alarms due to short-range clutter -
- 40.
In the AN/TPS75 radar, the monitoring fault isolation (MFI) test results are sent from the desquint processing circuits to the radar control function
- A.
Once each pulse recurrence time (PRT)
- B.
Twice each PRT
- C.
Once each antenna scan
- D.
Twice each antenna scan
Correct Answer
C. Once each antenna scan -
- 41.
How many consecutive pulse recurrence times (PRT) does it take the moving target indicator (MTI) receiver to filter out stationary targets?
- A.
Two
- B.
Three
- C.
Four
- D.
Five
Correct Answer
C. Four -
- 42.
In the AN/TPS-75 radar, the primary beam selector in the height signal processing function formats a 64-bit word from the peak selector that contains the primary beam
- A.
Only
- B.
And one adjacent beam
- C.
And two adjacent beams
- D.
And three adjacent beams
Correct Answer
C. And two adjacent beams -
- 43.
What type of data does the weather/ECM/ inverse jamming amplitude versus azimuth (IJAVA) function process in the AN/TPS-75 radar to develop linear jam data?
- A.
Filtered I and Q moving target indicator (MTI) data
- B.
Filtered I and Q search data
- C.
Nonfiltered I and Q MTI data
- D.
Nonfiltered I and Q search data
Correct Answer
A. Filtered I and Q moving target indicator (MTI) data -
- 44.
In the AN/TPS-75 radar target data post processing function, when is data specifying the parameters of each IFF/SIF listening period processed?
- A.
At time-zero (T0)
- B.
At end-of-range (EOR)
- C.
Each antenna scan at 0
- D.
Each antenna scan at 180
Correct Answer
A. At time-zero (T0) -
- 45.
Where does/do the transition of data between the real-time and the processing-time circuits take place in the AN/TPS-75 radar target data post processing function?
- A.
Control unit
- B.
Beacon control
- C.
Video processor
- D.
First-in first-out (FIFO) buffer
Correct Answer
D. First-in first-out (FIFO) buffer -
- 46.
The height between two targets is called the
- A.
Relative height
- B.
Absolute height
- C.
Projected height
- D.
Difference height
Correct Answer
A. Relative height -
- 47.
The monitoring fault isolation (MFI) operation is performed in the AN/TPS-75 radar during the radar
- A.
Live time of each pulse recurrence times (PRT)
- B.
Live time of every other PRT
- C.
Dead time of each PRT
- D.
Dead time of every other PRT
Correct Answer
C. Dead time of each PRT -
- 48.
Relative range and bearing on the AN/UYQ–27 situation display indicate the range and bearing from
- A.
One target to another
- B.
The sweep origin to a target
- C.
The sweep origin to the cursor origin
- D.
The cathode ray tube’s (CRT) center to the sweep origin
Correct Answer
A. One target to another -
- 49.
The type of storage used for the program instructions in the AN/UYQ–27 is
- A.
Read-only memory (ROM)
- B.
Random-access memory (RAM)
- C.
Hard disk
- D.
Floppy disk
Correct Answer
A. Read-only memory (ROM) -
- 50.
The type of information provided through the computer interface in the AN/UYQ–27 situation display is
- A.
Identification friend or foe (IFF) radar position data
- B.
Primary radar video data
- C.
Primary radar antenna position data
- D.
Digital target extractor (DTE) target data and computer graphics data
Correct Answer
D. Digital target extractor (DTE) target data and computer graphics data -
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Mar 19, 2022Quiz Edited by
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Jul 06, 2012Quiz Created by
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