A:-0°, Transfer
B:-270°, Tactical diameter
C:-(1) and (2)
D:-None of the above
Correct Answer:- Option-A
Question70:-Inside a LNG cargo ship tank due to heat ingress the cargo density variation is present. This induces a
convective flow in Z direction. In which of the following motions Coriolis acceleration will act on the fluid: roll, pitch and yaw.
A:-Roll and Pitch
B:-Roll and Yaw
C:-Yaw and Pitch
D:-(1), (2), (3)
Correct Answer:- Option-A
Question71:-A fighter jet is speeding on the flight deck of an aircraft carrier (in X axis direction of the ship) at a constant

speed of 150 km/hour. The ship is steadily yawing to port side at 5°/sec. the magnitude of Coriolis acceleration acting on the
fighter jet. Please ignore all other dynamical effects.

A:-7.272 *"m/s*2"~
.8 "۸/۸
7.8 "۰/۷۳7
D:-None of the above
Correct Answer:- Option-A
Question72:-Time derivative of unit vector in rotating coordinate system will be
430004 = omega xx i*
dotk = omega xx k*
C:-‘dotj = omega xx j°
D:-All of the above
Correct Answer:- Option-D
Question73:-The Euler angles used in ship dynamics are orthogonal.
A:-Commutative and orthogonal
B:-No
ടെ
D:-None of the above
Correct Answer:- Option-B
Question74:-During a sway harmonic test, 3 complete oscillation cycles are required. The carriage is towed at a steady
forward speed of 4.0 m/s. The time period of one complete sway oscillation is 10 sec. The minimum tank length required will
be m.
A:-40
B:-120
C:-80
D:-None of the above
Correct Answer:- Option-B
Question75:-In the 6 DoF motion of the ship, which degrees of freedom have the stiffness or restoring term present?
A:-Roll
itch
C:-Heave
D:-(1), (2) and (3)
Correct Answer:- Option-D
Question76:-The following procedure will be followed during crash stop maneuver execution in a ship fitted with (i) fixed
pitch propeller (ii) controllable pitch propeller.
A:-(i) Stop and reverse main engine
(ii) Only reverse the propeller pitch
B:-(i) Stop and reverse main engine
(ii) Stop and reverse main engine, thereafter reverse the propeller pitch
C:-(i) Give full ahead rpm
(ii) Give full ahead rpm
D:-None of the above
Correct Answer:- Option-A
Question77:-The following parameters are measured during crash stop maneuver execution in a ship
A:-Stopping Ability
B:-Head Reach
C:-Track Reach