Machine Design Quiz | Machine Design MCQs with Answers

Questions
101 A tube has the following advantage over pipe
A lighter and easier to handle
B greater shock absorption
C smoother inside walls
D all of the above

Answer: all of the above
102 In order to permit the thermal expansion/contraction of tubing, it should be
A bent
B flared
C crimped
D honed

Answer: bent

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103 The function of cutting oil when threading a pipe is to
A provide cooling action
B lubricate the dies
C help remove chips
D all of the above

Answer: all of the above
104 Taper on the cotter and slot is provided
A on both the sides
B on one side only
C on none of the sides
D may be provided anywhere

Answer: on one side only
105 The valve rod in a steam engine is connected to an eccentric rod by
A cotter joint
B bolted joint
C kunckle joint
D universal coupling

Answer: kunckle joint
106 A bench vice has following type of threads
A metric
B square
C buttress
D acme

Answer: acme
107 If threads on a bolt are left hand, threads on nut will be
A right hand with same pitch
B left hand with same pitch
C could be left or right hand
D right hand with fine pitch

Answer: left hand with same pitch
108 If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation
A 102 d
B 124 d
C 138 d
D 168 d

Answer: 168 d
109 Eye bolts are used for
A foundation purposes
B locking devices
C transmission of power
D lifting and transportation of machines and cubicles

Answer: lifting and transportation of machines and cubicles
110 Fibrous fracture occurs in
A ductile material
B brittle material
C elastic material
D hard material

Answer: ductile material
111 A tapered key which fits in a keyway in the hub and is flat on the shaft, is known as
A wood-ruff key
B feather key
C flat saddle key
D gib head key

Answer: flat saddle key
112 A key made from a cylindrical disc having segmental cross-section, is known as
A wood-ruff key
B feather key
C flat saddle key
D gib head key

Answer: wood-ruff key
113 A key capable of tilting in a recess milled out in a shaft is known as
A wood-ruff key
B feather key
C flat saddle key
D gib head key

Answer: wood-ruff key
114 Transverse fillet welded joints are designed for
A tensile strength
B compressive strength
C shear strength
D bending strength

Answer: tensile strength
115 Rivets are generally specified by
A thickness of plates to be riveted
B length of rivet
C diameter of head
D nominal diameter

Answer: nominal diameter
116 Machine screws are
A similar to small size tap bolts except that a greater variety of shapes of heads are available
B slotted for a screw driver and generally used with a nut
C used to prevent relative motion be-tween two parts
D similar to stud

Answer: slotted for a screw driver and generally used with a nut
117 The designation M 33 x 2 of a bolt means
A metric threads of 33 nos in 2 cm.
B metric threads with cross-section of 33 mm
C metric threads of 33 mm outside diameter and 2 mm pitch
D bolt of 33 mm nominal diameter having 2 threads per cm

Answer: metric threads of 33 mm outside diameter and 2 mm pitch
118 A self locking screw has
A fine threads
B coarse threads
C coefficient of friction > tangent of load angle
D hole for inserting split pin

Answer: coefficient of friction > tangent of load angle
119 Set screws are
A similar to small size tap bolts except that a greater variety of shapes of heads are available
B slotted for a screw driver and generally used with a nut
C used to prevent relative motion be-tween parts
D similar to stud

Answer: used to prevent relative motion be-tween parts
120 An alien bolt is
A self locking bolt
B same as stud
C provided with hexagonal depression in head
D used in high speed components

Answer: provided with hexagonal depression in head
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