NC Radar Study Guide Questions with Complete Solutions, Exams of Study of Commodities

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What is the minimum percent of instructional hours to complete basic Radar course? correct answer 30 hours/100% What is the minimum percent of instructional hours to complete Radar recertification course? correct answer 6 hours/100% Where are the state mandated guidelines found? correct answer Title 12, North Carolina Administrative Code, Chapter 9 Motor skills testing cannot exceed a minimum of? correct answer 2 hours Who issues Radar Certifications? correct answer North Carolina Criminal Justice Education and Training Standards. Where does the NCCJETSC get its power? correct answer G.S. 17C-6 (Power of the Commission) What are minimum scores for written and motor test for Basic Radar? correct answer 70%/100%

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What are the minimum scores for written and motor test for Radar Recert? correct answer 75%/100% How long does a trainee have to request for a written test retake? correct answer 30 days and must retake within 90 days How long does a Radar Certification last? correct answer 3 years For attendance of a Radar Cours you must be? correct answer endorsed by school director or LEO executive officer. Where should a radar antenna be mounted? correct answer close to windshield as possible. What is not a factor when mounting a radar unit or antenna? correct answer Temperature. What is the basic goal of police work? correct answer protect lives and property of the public.

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What is the overall goal of Radar Course? correct answer improve the effectiveness of enforcement through the proper and efficient use of SMI. What has been the most successful target in challenging Radar? correct answer Human Error What elements effect driving by increased speed? correct answer Operator, Vehicle, and Road Surface What is a persons average reaction time? correct answer 3/4 of a second What State enacted the first traffic law? correct answer New Amsterdam (New York) in 1652 What speed law does North Carolina not have? correct answer Prima Facie (at first sight) What is Absolute Speed Law? correct answer 20-141b based in-laws which simply prohibit driving faster than a specific numeric speed?

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What is Basic Speed Law? correct answer 20-141a consists of unreasonable and imprudent driving under existing conditions. What are the elements of a speed offense? correct answer Driver Identification, Location, Speed, and Conditions What percentage of lives were save from the reduction of the Nationwide 55 mph speed limit? correct answer 16.8%/8, What is the probability of having a fatal crash if speed increases from 45 to 60mph? correct answer doubles What is the percentage of lives that would be lost if the National speed limit was raised from 55mph to 60mph? correct answer 9%/3, What percentage of fatalities occur within local jurisdiction? correct answer 25%

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What is the acronym for RADAR correct answer Radio, Detection and Ranging. What speed does radio energy travel? correct answer 186,000 miles per second or 30 billion centimeters per second. (signal speed) How is Wave Length measured? correct answer the beginning of the peak to the end of the valley. What means the same as Frequency? correct answer Pitch What must the frequency be for a Radar Instrument to be approved in NC? correct answer 10 Billion hertz Frequency x Wave length= correct answer Signal Speed (AKA speed of light) What are the three distinguishable characteristics of a Radar Signal? correct answer Frequency, Wave Length, and Signal Speed.

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What does Signal speed always remain? correct answer Constant Wave Length and Frequency are both? correct answer Variable. What frequency and Wave Length does a X-band transmit? correct answer 10.525GHZ/3 cm 10x3cm= 30 billion centimeters per second What frequency and Wave Length does a K-band transmit? correct answer 24.150GHZ/1 1/4 cm 24x 1/4= 30 billion cm per second What frequency and Wave Length does a Ka-band transmit? correct answer 34.7GHZ/ 4/5 cm 34x 4/5= 30 billion cm per second What is bunching? correct answer heavy traffic/ amount of vehicles in a area of Radar operations. When a operator is adjusting the range control, what is adjusted? correct answer sensitivity of the received strength

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Where is the most energy from the RADAR beam located? correct answer cigar shaped center core. How will the RADAR range setting be effected if set on High? correct answer it will detect weak signals. How will the RADAR range setting be effected if set on Low? correct answer it will detect strong signals. At what angle is true speed? correct answer 0 degree angle. What angle should a radar antenna be aimed? correct answer no greater than 20 degrees. Who was Christian Doppler and what did he study? correct answer Austrian physicist, and the study of sound waves. Doppler Principle in Radar can be explained as? correct answer relative motion between a Radar instrument and solid object.

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What is the formula to compute a target speed in moving opposite mode? correct answer TS=CS/SS-PS (closing speed or separation speed will always be higher than your Patrol Speed.) The purposeful attempt to create a false reading by using a radar frequency transmitter is called? correct answer Jamming If there is any doubt in your mind as to which target vehicle is being tracked you should? correct answer Take no enforcement action. Which feature is not permitted in NC for speed enforcement? correct answer Automatic locking The ability to estimate the speed of a vehicle is known as? correct answer Learned ability. When the Radar antenna is moved in Stationary mode while in the process of measuring a speed this is called? correct answer Scanning.

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When the antenna is pointed/aimed at its own counting box and effect takes place known as? correct answer Panning. The two types of speed a moving Radar uses and compares are? correct answer The patrol vehicle's speed relative to the ground & The patrol vehicle's speed relative to the target vehicle. What on a patrol vehicle can cause a false reading? correct answer Defrost fans. When conducting a tuning fork test, an operator should aim the Radar antenna? correct answer up and away from the interference. When the patrol vehicle is changing speed rapidly, either accelerating or decelerating this could cause? correct answer Batching. In Same Direction mode on RADAR units will not process target speeds closer than? correct answer 3-6 mph up or down from the patrol vehicle.

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In moving RADAR you must have the following? correct answer visual estimation, audio tracking, target display, patrol speed verification. (same direction mode=target speed discrimination.) The most important element of tracking history is? correct answer Visual Estimation. Where can the rules for approving the use of speed instruments and procedures be located? correct answer NCGS 8-50.2 (Chapter 8) You should never mount or position the antenna to? correct answer expose the operator or passengers to microwave transmitter. The method of assembling a two piece RADAR is? correct answer Antenna to Box to Current (A-B-C Method) What is the most important part of site selection? correct answer Safety.

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What are the requirements for RADAR Reliability Act? correct answer 1. Held Valid Radar Certification issued by NCJETSC

2. Operated the radar in accordance with the procedures established by the Commission.
3. Radar must be on the instrument approved list.
4. Radar must have been calibrated and tested for accuracy (within 12 months) The three test used for instrument accuracy are? correct answer 1. Light Segment Test.
5. Internal Circuitry Test.
6. Tuning fork Test (External Test for Accuracy) What is the distance a tuning fork is held in front of the antenna? correct answer 1-2 inches When using the tuning forks for opposite mode? correct answer use the lower tuning fork first then the higher tuning fork.

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When using the tuning forks for same direction? correct answer use the higher tuning first and then the lower fork. What is a crucial element of successful prosecution of a speeding offense? correct answer Proper Foundation What brought about serious research and development of the Radar? correct answer War in Europe/War in the Pacific. What assists the Radar Operator in the detection of interference and target sensitivity? correct answer Audio Tracking.