Description : What type of radar transmitter power is measured over a period of time?
Last Answer : Average power.
Description : The distance from a radar set to a target measured along the line of sight is identified by what term?
Last Answer : Range.
Description : Transmitter power readings are most often referenced to what power level?
Last Answer : 1 milliwatt.
Description : What type of target bearing is referenced to your ship?
Last Answer : Relative bearing
Description : Pick up the correct statement from the following: (A) The lines of sight while observing back sight and fore sight lie in the same horizontal plane (B) The staff readings are measurements made ... readings are taken, coincides with the level surface through the telescope axis (D) All the above
Last Answer : (D) All the above
Description : If a linear traverse follows a sharp curve round a large lake where it is difficult to have long legs, the accuracy of the traverse may be improved by (A) Taking short legs (B) Making ... (C) Making a subsidiary traverse to determine the length of a long leg (D) All the above
Last Answer : (C) Making a subsidiary traverse to determine the length of a long leg
Description : If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by (A) Bowditch's rule (B) Transit rule (C) Empirical rule (D) All of the above
Last Answer : (B) Transit rule
Description : In precision theodolite traverse if included angles are read twice and the mean reading accepted using both verniers having a least count of 30". Assuming the instrument to be in perfect adjustment, linear measurements correct to 6 mm per ... legs) (A) 50" n (B) 30" n (C) 60" n (D) None of these
Last Answer : (A) 50" n
Description : Prolongation of chain line across an obstruction in chain surveying, is done by (A) Making angular measurements (B) Drawing perpendiculars with a chain (C) Solution of triangles (D) All the above
Last Answer : (B) Drawing perpendiculars with a chain
Description : Setting out a curve by two theodolite method, involves (A) Linear measurements only (B) Angular measurements only (C) Both linear and angular measurements (D) None of these
Last Answer : (B) Angular measurements only
Description : Transit rule of adjusting the consecutive coordinates of a traverse is used where (A) Linear and angular measurements of the traverse are of equal accuracy (B) Angular measurements are more accurate ... (C) Linear measurements are more accurate than angular measurements (D) All of the above
Last Answer : (B) Angular measurements are more accurate than linear measurements
Description : In chain surveying field work is limited to (A) Linear measurements only (B) Angular measurements only (C) Both linear and angular measurements (D) All the above
Last Answer : (A) Linear measurements only
Description : Angles to a given pivot station observed from a number of traverse stations when plotted, the lines to the pivot station intersect at a common point (A) Angular measurements are correct and ... plotting of traverse (D) Angular and linear measurements and also plotting of the traverse are correct
Last Answer : (D) Angular and linear measurements and also plotting of the traverse are correct
Description : What is the shape of the beam of a surface-search radar?
Last Answer : Wide vertically, narrow horizontally.
Description : What limits the maximum range of a surface-search radar?
Last Answer : Radar horizon.
Description : A surface-search radar normally scans how many degrees of azimuth?
Last Answer : 360 degrees.
Description : For an electric field to exist at the surface of a conductor, the field must have what angular relationship to the conductor?
Last Answer : The field must be perpendicular to the conductors.
Description : The cell mass can be measured optically by determining the amount of light scattered by a suspension of cells. The measurements are usually at a wavelength of A.300-400nm B.400-500nm C.500-600nm D.600-700nm
Last Answer : D.600-700nm
Description : If the area calculated form the plan plotted with measurements by an erroneous chain, accurate area of the plan is (A) Measured area (Length of chain used/Nominal chain length) (B) Measured ... of chain used)² (D) Measured area (Length of chain used/Nominal chain length)²
Last Answer : (D) Measured area × (Length of chain used/Nominal chain length)²
Description : When checking a diode with an ohmmeter, what is indicated by two high resistance measurements?
Last Answer : The diode is open or has a high-forward resistance.
Description : What are the three units of measure most commonly used when referring to af power measurements?
Last Answer : DB, dBm, and vu.
Description : Kelvin bridges are well suited for what type of measurements?
Last Answer : Small values of resistances
Description : How does the supply voltage affect the accuracy of Wheatstone bridge measurements?
Last Answer : As the supply voltage increases, bridge components may heat up and become less accurate.
Description : When you are measuring a component using a bridge, what is the most common cause of inaccurate measurements?
Last Answer : The capacitive and inductive characteristics of the test leads.
Description : Power measurements performed with calorimeters are based on what three variables?
Last Answer : Temperature, mass, and time.
Description : For power measurements, what advantage does an electronic wattmeter have over an electrodynamic wattmeter?
Last Answer : Electronic wattmeters are capable of measuring high-fequency signals.
Description : When is an optical power meter measurement recommended for conducting field measurements on installed optical fiber cables or cable plants?
Last Answer : When an installed optical fiber cable or cable plant is less than 50 meters in length.
Description : Why is a dead-zone fiber placed between the test fiber and OTDR when conducting attenuation measurements?
Last Answer : To reduce the effect of the initial reflection at the OTDR
Description : Why do end users perform fiber geometry measurements in the laboratory?
Last Answer : To reduce system attenuation and coupling loss resulting from poor fiber fabrication.
Description : What two properties of the launch condition may affect multimode fiber attenuation measurements?
Last Answer : . Launch spot size and angular distribution.
Description : List the fiber geometrical measurements performed in the laboratory.
Last Answer : Cladding diameter, core diameter, numerical aperture, and mode field diameter.
Description : Prior to substituting a diode, what measurements should you take to determine its condition?
Last Answer : Voltages and resistances.
Description : When making voltage measurements in a high-resistance circuit, you should always use a voltmeter with what relative value of resistance?
Last Answer : . High.
Description : What are the advantages of connecting ammeters in parallel when performing current measurements?
Last Answer : Decreased internal meter resistance, greater accuracy, and greater current range.
Description : The frequency response of test equipment refers to what aspect of ac voltage measurements?
Last Answer : the range of frequencies that can accurately be measured.
Description : The true meridian of a place is the line in which earth's surface is intersected by a plane through (A) East and west points (B) Zenith and nadir points (C) North and south geographical poles (D) North and south magnetic poles
Last Answer : (C) North and south geographical poles
Description : According to standard convention, the angles of incidence and reflection for a plane surface are measured from: w) the reflecting surface x) lines at 45 degrees to the reflecting surface y) a line at 90 degrees to the reflecting surface z) there is no standard
Last Answer : ANSWER: Y -- A LINE AT 90 DEGREES TO THE REFLECTING SURFACE
Description : Which of the following terms is used to describe the angular difference between TRUE north and magnetic north on a topographic map? Is it: w) Magnetic field x) Magnetic intensity y) Magnetic inclination z) Magnetic declination
Last Answer : ANSWER: Z -- MAGNETIC DECLINATION
Description : . What is the normal source of dry air for a radar system?
Last Answer : Ship's central dry-air system
Description : The peak power of a radar depends on the interrelationship of what other factors?
Last Answer : Average power, pulse width, and prt.
Description : The ideal radar spectrum has what relationship to the carrier frequency?
Last Answer : Symmetrical above and below the carrier frequency.
Description : The spectrum of a radar transmitter describes what characteristic of the output pulse?
Last Answer : Frequency distribution
Description : Which of the two types of automatic gain control, agc or iagc, is most effective in radar use for the Navy?
Last Answer : IAGC.
Description : What IF frequencies are normally used in radar receivers
Last Answer : Thirty or sixty megahertz.
Description : What type of receiver is most often used in radar systems?
Last Answer : Superheterodyne.
Description : What type of modulator is most commonly used in modern radar systems?
Last Answer : Line-pulsed.
Description : In an externally synchronized radar, what determines the prr of the transmitter?
Last Answer : The master oscillator.
Description : What type of multivibrator can be used as a radar master oscillator?
Last Answer : Free-running.
Description : A self-synchronized radar system obtains timing trigger pulses from what source?
Last Answer : Transmitter.