To obtain photographs of an area of 1000 m average elevation, on scale 1 : 30,000, with a camera of 30 cm focal length, the flying height is 7000 m 5000 m 4000 m 6000 m TRUE ANSWER : ? YOUR ANSWER : ?
The rate of change of parallax dp/dh with respect to change in h, may be expressed as fB/(H - h) fB/(H - h)² fB/(H + h)² fB/(H + h) TRUE ANSWER : ? YOUR ANSWER : ?
Right ascension of a heavenly body is its equatorial angular distance measured Eastward from the first point of Libra Westward from the first point of Aeries Westward from the first point of Libra Eastward from the first point of Aeries TRUE ANSWER : ? YOUR ANSWER : ?
Direct method of contouring is a quick method suitable for hilly terrains most accurate method adopted for large surveys only TRUE ANSWER : ? YOUR ANSWER : ?
The great circle whose plane is perpendicular to the axis of rotation of the earth, is called 0° latitude Terrestrial equator Equator All of these TRUE ANSWER : ? YOUR ANSWER : ?
There are two stations A and B. Which of the following statements is correct? The fore and back bearings of AB differ by 180° The back bearing of AB is BA The fore bearing of AB is AB All listed here TRUE ANSWER : ? YOUR ANSWER : ?
Dumpy level is most suitable when many readings are to be taken from a single setting of the instrument All of these fly levelling is being done over long distance the instrument is to be shifted frequently TRUE ANSWER : ? YOUR ANSWER : ?
If v, t and f/H are the ground speed of the aircraft, the shutter speed of the camera and the scale of the photograph respectively, then the amount of image displacement i = t. H/v. f i = v. t. (f/H) i = v. f/t. H i = v. t. H/f TRUE ANSWER : ? YOUR ANSWER : ?
Longitudes are measured from 0° to 180° westward 180° east or westward 180° eastward 360° eastward TRUE ANSWER : ? YOUR ANSWER : ?
The resection by two point problem as compared to three point problem takes less time gives more accurate problem None of these requires more labour TRUE ANSWER : ? YOUR ANSWER : ?