Theory of Machines objective questions with answers part6

Q1. Klein’s construction can be used to determine acceleration of various parts when the crank is at
(A) outer dead centre
(B) right angles to the link of the stroke
(C) at 45° to the line of the stroke
(D) All of these

Q2. The number of centers in a crank driven slider crank mechanism are
(A) 0
(B) 2
(C) 4
(D) 6

Q3. Corioli’s component acts
(A) perpendicular to sliding surfaces
(B) along sliding surfaces
(C) somewhere in between above two
(D) unpredictable

Q4. The sense of Corioli’s component is such that it
(A) leads the sliding velocity vector by 90°
(B) lags the sliding velocity vector by 90°
(C) is along the sliding velocity vector
(D) leads the sliding velocity vector by 180°

Q5. Klein’s construction can be used when
(A) crank has a uniform angular velocity
(B) crank has non-uniform velocity
(C) crank has uniform angular acceleration
(D) crank has uniform angular velocity and angular acceleration

Q6. Klein’s construction is useful to determine
(A) velocity of various parts
(B) acceleration of various parts
(C) displacement of various parts
(D) All of these

Q7. A circle passing through the pitch point with its center at the center of cam axis is known as
(A) pitch circle
(B) base circle
(C) prime circle
(D) outer circle

Q8. The pressure angle of a cam depends upon
(A) offset between centre lines of cam and follower
(B) angle of ascent
(C) sum of radii of base circle and roller follower
(D) All of these

Q9. Cam size depends upon
(A) base circle
(B) pitch circle
(C) prime circle
(D) outer circle

Q10. Cylindrical cams can be classified as
(A) circular
(B) tangent
(C) All of these
(D) none of these

Q11. The maximum value of the pressure angle in case of cam is kept as
(A) 10°
(B) 14°
(C) 20°
(D) 30°

Q12. For the same lift and same angle of ascent, a smaller base circle will give
(A) a small value of pressure angle
(B) a large value of pressure angle
(C) there is no such relation with pressure angle
(D) All of these

Q13. Cam angle is defined as the angle
(A) during which the follower returns to its initial position
(B) of rotation of the cam for a definite displacement of the follower
(C) through which, the cam rotates during the period in which the follower remains in the highest position
(D) moved by the cam from the instant the follower begins to rise, till it reaches its highest position

Q14. Angle of descent of cam is defined as the angle
(A) during which the follower returns to its initial position
(B) of rotation of the cam for a definite displacement of the follower
(C) through which the cam rotates during the period in which the follower remains in the highest position
(D) moved by the cam from the instant the follower begins to rise, till it reaches its highest position

Q15. Angle of action of cam is defined as the angle
(A) during which the follower returns to its initial position
(B) of rotation of the cam for a definite displacement of the follower
(C) moved by the cam from the instant the follower begins to rise, till it reaches its highest position
(D) moved by the cam from beginning of ascent to the termination of descent