M8 Flashcards
What is the process of making bolt heads
by forging?
A. Fullering C. Swagging
B. Drifting D. Upsetting
A
Which of the following device is used for
transmitting energy in CNC machine tools?
A. Gears
B. Pulley and belt
C. Recirculating ball screw and nut assembly
D. Screw and nut assembly
C
The allowable tensile stress for a 6.25
mm diameter bolt with a thread length of 5.5 mm is 207
MPa. The allowable shear stress of the material is 103 MPa.
Where and how will such a bolt be most likely to fail if placed
in tension? (Assume threads are perfectly triangular and
that the force is carried at the mean thread height.)
A. At the root diameter due to shear
B. At the root diameter due to tension
C. At the threads due to shear
D. At the threads due to tension
A
(ME BD, OCT. 2002) In ______ design, the lead of a single
threaded is equal to the pitch.
A. internal gear C. helical gear
B. hypoid gear D. bolt
D
It is the top surface joining two sides of
the threads in screw.
A. Crest C. Top flank
B. Pitch D. Top land
A
It is the conical surface at the starting
end of the thread.
A. Chamfer C. Flute
B. Crest D. Pitch cone
A
The angle made by the helix of the thread (in
a straight thread) at the pitch diameter with a plane
perpendicular to the axis is called:
A. Angle of thread C. Lead angle
B. Lead D. Truncation
C
Foundation bolts should be surrounded by a
pipe steam with an inside diameter of at least 3 times the
diameter of the anchor bolt and a length of at least:
A. 16 times the bolt diameter
B. 18 times the bolt diameter
C. 20 times the bolt diameter
D. 22 times the bolt diameter
B
For ACME thread the pressure angle normal
to the thread is equal to:
A. 12.5 degrees C. 14.5 degrees
B. 13.5 degrees D. 34 degrees
C
The joint intended to resist leakage to a hydrostatic test
pressure of ______ the working pressure.
A. 1.5 to 2 times C. 2 to 3 times
B. 1.5 to 2.5 times D. 2 to 3.5 times
A
Which of the following is not a name of the major diameter
of an external thread?
A. Cone diameter C. Full diameter
B. Crest diameter D. Outside diameter
A
Which of the following is not true about the axial thickness
of screw thread?
A. Distance between opposite faces of same thread
B. Measured at the same thread
C. Measured in direction perpendicular to the axis of
thread
D. Measured on pitch cylinder
C
What is the alternative name of functional diameter?
A. Cone diameter C. Root diameter
B. Inside diameter D. Virtual diameter
D
A type of bolt which consists of only a cylindrical shank
threaded at both ends. _________
A. Tap-bolt C. Stud bolt
B. Cap screw D. Eye bolt
C
. A type of bolt used for lifting heavy machines.
A. Cup-headed bolt C. Hook bolt
B. Eye-bolt D. Lifting eye-bolt
D
