सर्भेक्षण – Surveying MCQ
सर्भेक्षण – सिभिल इन्जिनियरिङ
Surveying · Civil Engineering · १,५६५ प्रश्न
१,५६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
सर्भेक्षण: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
GPS satellites orbit the earth at an altitude of approximately:
सही उत्तर: ख) 20,200 km
GPS satellites are in medium earth orbit at about 20,200 km, completing two orbits per sidereal day.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In GNSS positioning, a low value of PDOP indicates:
सही उत्तर: ग) Good satellite geometry and better position accuracy
Position Dilution of Precision reflects satellite geometry; widely spread satellites give a low PDOP and more accurate fixes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The reference datum (ellipsoid and coordinate system) used by GPS is:
सही उत्तर: ख) WGS 84
GPS coordinates are expressed in the World Geodetic System 1984 (WGS 84).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Real-time kinematic (RTK) GNSS surveying can give centimetre-level positions because it uses:
सही उत्तर: ख) Carrier-phase measurements with real-time corrections from a base station
RTK resolves carrier-phase ambiguities using corrections broadcast from a nearby base station, giving cm accuracy in real time.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
GLONASS is the global navigation satellite system of:
सही उत्तर: ग) Russia
GLONASS is Russian; GPS belongs to the USA, BeiDou to China and Galileo to the EU.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
An instrument through which a pair of overlapping photographs is viewed to see a three-dimensional model is a:
सही उत्तर: ख) Stereoscope
A stereoscope presents each overlapping photo to one eye so the brain fuses them into a 3D view.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Ground control points (GCPs) in photogrammetry and image rectification are:
सही उत्तर: ग) Points identifiable on the image whose ground coordinates are known
GCPs link image coordinates to ground coordinates, allowing scaling, orientation and georeferencing.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which remote sensing system is 'active', providing its own source of energy?
सही उत्तर: ख) Radar (SAR)
Radar transmits microwave pulses and records the echoes, so it works day and night and through clouds; the others record natural reflected or emitted energy.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Fiducial marks on an aerial photograph are used to:
सही उत्तर: ख) Locate the principal point by joining opposite marks
Fiducial marks at the edges or corners of the photo define axes whose intersection gives the principal point.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The principal point of an aerial photograph is:
सही उत्तर: घ) The point where the perpendicular from the perspective centre meets the photo plane
The principal point lies at the foot of the camera's optical axis on the photograph and is located using fiducial marks.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।