1. . Torque is the product of:
(A) Mass and acceleration
(B) Force and mass
(C) Mass and velocity
(D) Force and vertical distance of force from axis of rotation
2. . The relation between linear and angular acceleration is:
(A) a = 1/α
(B) α = a/r
(C) a = r α
(D) a = α²
3. . One revolution is equal to:
(A) 360°
(B) 180°
(C) 90°
(D) 270°
4. . The unit of angular velocity is:
(A) m/sec
(B) rad/sec
(C) meter
(D) radian
5. . The conditions of equilibrium are:
(A) One
(B) Two
(C) Three
(D) Four
6. . Torque has maximum value if angle between r and F is:
(A) 0°
(B) 30°
(C) 45°
(D) 90°
7. . Torque has zero value if angle between F and r is:
(A) 0°
(B) 45°
(C) 60°
(D) 90°
8. . The centre of gravity of a body is:
(A) The centre of the body
(B) The point at which the mass of the body acts
(C) The point at which the whole weight of the body acts
(D) None of these
9. . The point at which an applied force produces a linear acceleration but no rotation is called:
(A) Centre of body
(B) Centre of mass
(C) Weight of body
(D) Fulcrum
10. . A body will be in translational equilibrium, if:
(A) Σ F = 0
(B) Σ P = 0
(C) Σ L = 0
(D) Σ τ = 0
11. . A body will be in rotational equilibrium, if:
(A) Σ L = 0
(B) Σ P = 0
(C) Σ F = 0
(D) Σ τ = 0