Surveying - Engineering

Q1:

Pick up the correct statement from the following :

A in the earth's magnetic field, a magnetic needle rests in magnetic meridian

B the angle between the true meridian and the magnetic meridian is called magnetic variation

C one end of the magnetic needle supported at its centre of gravity tends to dip down towards the. nearer magnetic pole of the earth

D the magnet properly pivoted is balanced by means of riding weight movable along the needle

E all the above.

ANS:E - all the above.

Angle b/w true meridian and magnetic meridian is called magnetic declination. Magnetic declination is also called magnetic variation.