D41 MASTER THE DAY

Which term refers to the difference between equatorial and polar axis of the Earth?

• Flattening
• Oblateness
• Deviation
• Spherical Gap

Answer explanation

The Earth is an oblate spheroid with a difference of 42.95 km between axes.

Which of the following is NOT a land surveying subdivision?

• Topographical Survey
• Engineering Survey
• Marine Survey
• Cadastral Survey

Answer explanation

Marine Survey is not a subdivision of Land Surveying.

How many square yards make one square rod?

• 9
• 30.25
• 40
• 484

Answer explanation

1 square rod = 30.25 square yards.

What is the basic unit of length in the metric system?

• Kilometre
• Decametre
• Metre
• Centimetre

Answer explanation

The base unit of length in the metric system is metre.

Which of the following measurements equals 1 hectare?

• 100 ares
• 10000 m²
• 2.471 acres
• All of these

Answer explanation

All options correctly represent 1 hectare.

Which principle of surveying helps in fixing unknown points from known reference points?

• Work from whole to part
• Intersection method
• Two-point fixing
• Resection method

Answer explanation

New points are fixed using measurements from at least two known reference points.

What is the unit of measurement for depth in marine surveys?

• Fathom
• Foot
• Rod
• Yard

Answer explanation

Fathom (6 feet) is commonly used to express water depth in marine surveys.

In surveying, what does a 'control station' refer to?

• Benchmark station
• Reference point
• Data collection point
• Survey office

Answer explanation

Control stations are known reference points used for survey control.

What does 'EDM' stand for in surveying instruments?

• Electrical Distance Marker
• Electronic Distance Meter
• Electronic Datum Measurement
• Energy Distribution Method

Answer explanation

EDM stands for Electronic Distance Meter, used for accurate distance measurement.

Which survey determines different strata inside Earth's crust?

• Military Survey
• Geological Survey
• Astronomical Survey
• Reconnaissance Survey

Answer explanation

Geological survey investigates subsurface geological formations.