Gyro & Magnetism (LA 2)

Front

List the sequence of placing the correctors in Analysis Method of Compass Correction: I. Heeling Error Corrector (Vertical Magnet) II. Spheres III. Flinders Bar IV Permanent Magnet for PB and PC

Back

III, II, I, IV

Front

In a ship with a permanent red predominating below the compass, and with a constant heel to starbd. The deviation varies as the ship head changes can be deduced by the following relationship: PHE varies as?

Back

cos comp. co

Front

The spheres could reduce which the following horizontal rods Heeling Error: I. g rod Heeling Error II. c rod Heeling Error III. k rod Heeling Error IV. e rod Heeling Error

Back

III, IV

Front

Which of the following is NOT the occasions when a full correction is necessary:
When the compass is first installed,
After collision,
When the ship has undergone large structural alterations,
After loading or disloading by electromagnets

Back

After loading or disloading by electromagnets

Front

Like cures like principle is apply in compass correction for deviation due the following Coefficients except: Coefficient D, Coefficient C, Coefficient B, Heeling Error

Back

Heeling Error

Front

Which corrector is placed when a normal merchant ship is at North heading? Options: Athwarthship Horizontal Permanent Magnet, Fore & Aft Horizontal Permanent Magnet, Spheres, Flinders Bar

Back

Athwarthship Horizontal Permanent Magnet

Front

The deviation of the following Coefficients are not changing with the change of magnetic latitude, except: Coefficient A, Coefficient B, Coefficient D, Coefficient E

Back

Coefficient B

Front

Slewing of flinders bar is for correcting

Back

iB and iC together

Front

Which Coefficient where its correction is done on intercardinal headings?

Back

Coefficient D

Front

When the ship is upright, which rod will not be induced to cause Heeling Error? (Options: k rod, e rod, g rod, c rod)

Back

e rod