Angular Momentum of Inclined Rod | Mechanics

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A DC motor is used to rotate the setup. The rod in setup 1 is horizontal and that in setup 2 is inclined.
Q1. The angular momentum of the rod about the point of intersection of the rod and the axis of rotation is
(A) Constant in setup 1 as well as in setup 2
(B) Constant in setup 1 but varies with time in setup 2
(C) The angular momentum in setup 1 parallel to the angular velocity of the rod
(D) The angular momentum in setup 2 makes a constant angle with the angular velocity of the rod

Q2. Which of the following is (are) not correct
(A) The angular speed in setup 2 is more than that in setup 1.
(B) There is a time-varying torque on the rotating part in setup 2.
(C) The DC motor shaft will have more wear and tear in setup 2 than in setup 1.
(D) The machines with rotating parts are usually installed on foundations with high inertia and damping.
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