Q.1
The pitching effect of a naval-ship produces force(s) on which of the following components of the ship?
  • a) Bearings
  • b) Lubricant
  • c) Seals
  • d) Springs
Q.2
Which of the following represent the maximum angular acceleration?
  • a) αmax = Φ(ω1)2
  • b) αmax = Φ2 (ω1)2
  • c) αmax = (ω1)2/ Φ
  • d) αmax = (ω1)2/ Φ2
Q.3
Pitching is the movement of a ship up and down in a vertical plane about transverse axis.
  • a) True
  • b) False
Q.4
The pitching of the ship is assumed to take place with which of the following motion?
  • a) Constant acceleration
  • b) Simple Harmonic Motion
  • c) Cycloidal
  • d) Uniform Velocity
Q.5
Maximum couple during pitching is given by : (ω: angular velocity of rotor & ωpmax: Maximum angular velocity of precession).
  • a) Cmax = I.(ωpmax)2
  • b) Cmax = I.(ω)2
  • c) Cmax = I. ω. ωpmax
  • d) Cmax = I2. ω. ωpmax
Q.6
During upward pitching, Gyroscopic couple will tend to move the ship towards ________
  • a) Star-board
  • b) Port side
  • c) Ship movement is unaffected by upward pitching
  • d) Left side
Q.7
During downward pitching, Gyroscopic couple will tend to move the ship towards ________
  • a) Star-board
  • b) Port side
  • c) Ship movement is unaffected by upward pitching
  • d) Right side
Q.8
If the movement of the ship were to occur about a vertical plane about a parallel axis then which of the following factors will be affected while pitching?
  • a) Upward pitch
  • b) Downward pitch
  • c) Pitching will not occur
  • d) Change in angular velocity of rotor
Q.9
What will be the effect of a gyroscopic couple if the axis of precession and axis of spin become parallel?
  • a) No effect
  • b) Pitching
  • c) Steering effect
  • d) No motion
Q.10
Which of the following is known as the axis of precession?
  • a) Latitudinal axis
  • b) Longitudinal axis
  • c) Reverse axis
  • d) Axis of spin
Q.11
The axis of precession is parallel to axis of spin during rolling for only a selected few positions.
  • a) False
  • b) True
Q.12
Which of the following would change during rolling of a navalship?
  • a) Angular velocity of precession
  • b) Angular acceleration of precession
  • c) Angular velocity of spin
  • d) No change occurs
Q.13
The gyroscope couple does not cause an effect on a naval ship during which of these motions?
  • a) Pitching
  • b) Steering
  • c) Rolling
  • d) Lifting
Q.14
Rolling is the turning of a complete ship in a curve towards left or right, while it moves forward.
  • a) True
  • b) False
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