136. Coriolis component is encountered in
(a) quick return mechanism of sharper
(b) four bar chain mechanism
(c) slider crank mechanism
(d) (a) and (c) above
(e) all of the above.
Ans: a
137. Klein's construction gives a graphics construction for
(a) slider-crank mechanism
(b) velocity polygon
(c) acceleration polygon
(d) four bar chain mechanism
(e) angular acceleration.
Ans: c
138. Klein's construction can be used to determine acceleration of various parts when the crank is at
(a) inner dead center
(b) outer dead center
(c) right angles to the link of the stroke
(d) at 45° to the line of the stroke
(e) all of the above.
Ans: e
139. The number of load centers in a crank driven slider crank mechanism are
(a) 0
(b) 2
(c) 4
(d) 6
(e) may be any number depending upon position of mechanism.
Ans: b
140. Corioli's component acts
(a) perpendicular to sliding surfaces
(b) along sliding surfaces
(c) somewhere in between above two
(d) unpredictable
(e) none of the above.
Ans: a
141. 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°
(e) none of the above.
Ans: a
142. 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
(e) there is no such criterion.
Ans: a
143. Klein's construction is useful to determine
(a) velocity of various parts
(b) acceleration of various parts
(c) displacement of various parts
(d) angular acceleration of various parts
(e) all of the above.
Ans: b
144. 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
(e) cam circle.
Ans: c
145. The pressure angle of a cam depends upon
(a) offset between center lines of cam and follower
(b) lift of follower
(c) angle of ascent
(d) sum of radii of base circle and roller follower
(e) all of the above.
Ans: e
146. Cam size depends upon
(a) base circle
(b) pitch circle
(c) prime circle
(d) outer circle
(e) none of the above.
Ans: a
147. Cylindrical cams can be classified as
(a) circular
(b) tangent
(c) reciprocating
(d) all of the above
(e) none of the above.
Ans: e
148. The maximum value of the pressure angle in case of cam is kept as
(a) 10°
(b) 14°
(c) 20°
(d) 30°
(e) 25°.
Ans: d
149. 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) something else
(e) none of the above is true.
Ans: b
150. 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
(e) moved by the cam from beginning of i ascent to the termination of descent.
Ans: b
Read More Questions:
Theory of Machines - Mechanical Engineering Part1
Theory of Machines - Mechanical Engineering Part2
(a) quick return mechanism of sharper
(b) four bar chain mechanism
(c) slider crank mechanism
(d) (a) and (c) above
(e) all of the above.
Ans: a
137. Klein's construction gives a graphics construction for
(a) slider-crank mechanism
(b) velocity polygon
(c) acceleration polygon
(d) four bar chain mechanism
(e) angular acceleration.
Ans: c
138. Klein's construction can be used to determine acceleration of various parts when the crank is at
(a) inner dead center
(b) outer dead center
(c) right angles to the link of the stroke
(d) at 45° to the line of the stroke
(e) all of the above.
Ans: e
139. The number of load centers in a crank driven slider crank mechanism are
(a) 0
(b) 2
(c) 4
(d) 6
(e) may be any number depending upon position of mechanism.
Ans: b
140. Corioli's component acts
(a) perpendicular to sliding surfaces
(b) along sliding surfaces
(c) somewhere in between above two
(d) unpredictable
(e) none of the above.
Ans: a
141. 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°
(e) none of the above.
Ans: a
142. 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
(e) there is no such criterion.
Ans: a
143. Klein's construction is useful to determine
(a) velocity of various parts
(b) acceleration of various parts
(c) displacement of various parts
(d) angular acceleration of various parts
(e) all of the above.
Ans: b
144. 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
(e) cam circle.
Ans: c
145. The pressure angle of a cam depends upon
(a) offset between center lines of cam and follower
(b) lift of follower
(c) angle of ascent
(d) sum of radii of base circle and roller follower
(e) all of the above.
Ans: e
146. Cam size depends upon
(a) base circle
(b) pitch circle
(c) prime circle
(d) outer circle
(e) none of the above.
Ans: a
147. Cylindrical cams can be classified as
(a) circular
(b) tangent
(c) reciprocating
(d) all of the above
(e) none of the above.
Ans: e
148. The maximum value of the pressure angle in case of cam is kept as
(a) 10°
(b) 14°
(c) 20°
(d) 30°
(e) 25°.
Ans: d
149. 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) something else
(e) none of the above is true.
Ans: b
150. 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
(e) moved by the cam from beginning of i ascent to the termination of descent.
Ans: b
Read More Questions:
Theory of Machines - Mechanical Engineering Part1
Theory of Machines - Mechanical Engineering Part2
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