Zenith distance is equal to __________.?
A) 90° – Ho B) 90° – d C) Ho° + d D) 90° – z E)NULL
Arşivler Sorular
Concerning a celestial observation, the azimuth angle is measured from the principal vertical circle to the ____________ .?
A) Greenwich celestial meridian B) hour circle of the body C) local celestial meridian D) vertical circle of the body E)NULL
Your position is LAT 20°00’N, LONG 45°00’W when you take a radio bearing on a ship in distress in LAT 15°00’N, LONG 40°00’W. Your RDF bearing corrected for calibration error is 135.6°T. What is the rhumb line course to rendezvous with the vessel in distress?
A) 134.9°T B) 135.6°T C) 136.2°T D) 136.9°T E)NULL
Atmospheric pressure at sea level is equal to __________.?
A) 14.7 pounds per square inch B) 29.92 inches of mercury C) 1013.25 millibars D) All of the above E)NULL
The Sun’s center is coincident with the principal vertical circle when __________.?
A) in lower transit B) the hour circle and prime vertical are coincident C) the declination is zero degrees and the azimuth is exactly N 135°E D) the declination is zero degrees and the azimuth is exactly N 135°W E)NULL
Superior conjunction occurs when __________.?
A) the Sun is at maximum declination north or south B) a planet crosses the external plane of the ecliptic C) the Sun is between the Earth and a planet D) two planets are in line E)NULL
You are approaching a drawbridge and have sounded the proper whistle signal requesting it to open. You hear a signal of one prolonged and one short blast from the bridge. Which action should you take?
A) Anchor or use an alternate route because the bridge is out of service for an extended period of time. B) Approach to a point not closer than 400 yards (360 meters) from the bridge and await further signals. C)…
The Light List indicates that a dayboard is a type KGW. You should __________.?
A) see a green and white diamond B) leave it to port when southbound on the Atlantic Coast ICW C) pass it close aboard on either side D) look for another daymark to form the range E)NULL
While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 2 1/2 seconds after the signal was sounded. What is the distance to the shore?
A) 225 yards B) 460 yards C) 750 yards D) 910 yards E)NULL
All Loran-C transmitting stations are equipped with cesium frequency standards which permit __________.?
A) every station in one chain to transmit at the same time B) each station to transmit without reference to another station C) on-line transmission of single-line transmitters at the same time D) each station to only depend on the…