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Higher Study | Theory of Machines | Gyroscope

If the propeller of an aeroplane rotates clockwise when viewed from the rear and the aeroplane takes a right turn, the gyroscopic effect will
When a ship travels in a sea, which of the following effects is more dangerous?
A disc spinning on its axis at 20 rad/s will undergo precession when a torque 100 N-m is applied about an axis normal to it. If the mass moment of inertia is 1 kg-m2, then the angular velocity of precession is?
Which of the following effects is more dangerous for a ship?
Consider the following statements: 1. Gyroscopic effects generate forces and couples which act on the vehicles, and these effects must be taken into account while designing their bearings. 2. Rolling motion of a ship usually occurs because of the difference in buoyancy on the two sides of the ship due to a wave. Which of the above statements is/are correct?
Gyroscopic effect is not observed in which of the following actions performed by the ships? 
A disc is spinning with an angular velocity w rad/s about the axis of spin. The couple applied to the disc causing precession will be: (where I = Mass moment of inertia of the disc, and wP = Angular velocity of precession of the axis of spin)
The disc is spinning with angular velocity ω  rad/sec about the axis of spin. The couple applied to the disc causing precision will be : where ωp = angular velocity of precision of axis of spin and  I = mass momentum inertia of disc.  
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