The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called

The great circle along which the sun appears to trace on the celestial sphere with earth as centre during the year, is called

A

Equator

B

Celestial equator

C

Ecliptic

D

None of these

The point on the celestial sphere vertically below the observer's position, is called

A

Zenith

B

Celestial point

C

Nadir

D

Pole

The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of

A

Reverse curve

B

Next curve of the same order

C

Reverse curve plus the width of the river

D

None of these

The zenith is the point on the celestial sphere

A

East of observer

B

West of observer

C

North of observer

D

South of observer

When an object enters earths atmosphere, it travels ----

A

very repidly

B

in a rapid manner

C

fastly

D

rapidly

The point where vertical line passing through the perspective centre intersects the plane of the photograph, is known as

A

Photo plumb point

B

Plumb point

C

Nadir point

D

Isocenter

The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is

A

Altitude and azimuth system

B

Declination and hour angle system

C

Declination and right ascension system

D

Declination and altitude system

The position of a heavenly body on the celestial sphere can be completely specified by

A

Its altitude and azimuth

B

Its declination and hour angle

C

Its declination and right ascension

D

All the above

Point A is 10 miles West of Point B. Point b is 30 miles North of pint C. Point C is 20 miles East of Point D. What is the distance (in miles) between Point A and Point D?

A

1010

B

1020

C

2010

D

3010

Point A is 10 km west of point B. Point B is 30 km north of point C. Point C is 20 km east of point D. What is the distance between point A and D?

A

1020Km

B

1010Km

C

2010Km

D

3010Km

The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called

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