111. In a transverse fillet welded joint, the size of weld is __________ the throat of weld.
0.5 times
equal to
2 times
double
✅ The correct answer is option C.
Machine Design MCQs
112. In a nut and bolt, the diameter at which the ridges on the bolt are in complete touch with the ridges of the corresponding nut, is called pitch diameter.
Correct
Incorrect
✅ The correct answer is option A.
113. A coupling used to connect two perfectly aligned shafts, is
muff coupling
compression coupling
flange coupling
all of these
✅ The correct answer is option D.
114. If the tearing efficiency of a riveted joint is 50%, then the ratio of diameter of rivet to the pitch is
0.2
0.3
0.5
0.7
✅ The correct answer is option C.
115. When a metal or alloy is cold worked,
its hardness and strength increases
it is worked below recrystallisation temperature
Both (A) and (B)
None of these
✅ The correct answer is option C.
116. The form factor of a helical gear __________ with the increase in the helix angle.
increases
decreases
remains constant
✅ The correct answer is option A.
117. If the size of a standard specimen for a fatigue testing machine is increased, the endurance limit for the material will
have same value as that of standard specimen
increase
decrease
✅ The correct answer is option C.
118. The V-belts are particularly suitable for __________ drives.
short
long
✅ The correct answer is option A.
119. The smallest diameter of an external or internal screw thread is known as
minor diameter
major diameter
pitch diameter
none of these
✅ The correct answer is option A.
120. According to Indian standard specifications, 100 H6/g5 means that
tolerance grade for the hole is 6 and for the shaft is 5
tolerance grade for the shaft is 6 and for the hole is 5
tolerance grade for the shaft is 4 to 8 and for the hole is 3 to 7
tolerance grade for th
✅ The correct answer is option A.