DoM Quiz 02

The slow movement of the axis of a spinning body around another axis due to a torque (such as gravitational influence) acting to change the direction of the first axis is _______

Vectors have

• Directions

• Magnitude

• Line of Action

• Support

Select the correct pair/s

• Thumb = Spin

• Index Finger = Presession

• Middle Finger = Gyroscopic Couple

• Left Hand = Active Gyroscopic Couple

Which of these is used for determining the sense of moment/torque/couple ?

• Left Hand Thumb Rule

• Clockwise Thumb Rule

• Anti-Clockwise Thumb Rule

• Right Hand Thumb Rule

A vector coming out of the plane is denoted by

• 
• 

A vector going in the plane is denoted by

• 
• 

Consider the following:

Viewed from: Stern

Propeller rotates: Clockwise

Steer towards: Left

Bow goes: ____?

• Down

• Up

• Port Side

• Starboard Side

Consider the following:

Viewed from: Stern

Propeller rotates: Clockwise

Ship: Rolls

Effect of Gyroscopic Couple: ___?

• No Effect

• Bow goes up & down.

• Ship goes Port Side

• Ship goes Starboard Side

Which of these Angular Velocities are considered while solving a problem of ship that is pitching?

• Angular Velocity of Motor

• Angular Velocity of Pitching

• Angular Velocity of Precession

• Angular Velocity of Gyration

Effect of Gyroscopic Couple is seen in

• Naval Ships

• Airplanes

• Four Wheelers

• Two Wheelers